As per my requirements, I have made a code to upload an image and given the various effects to the image.

So please follow the below steps to achieve the functionality.

Step1: Add below code in your .phtml file where you want to upload an image.

<div class="container wallpapercustompage">
  <div class="row">
    <div class="col-lg-8">
      <div class="mainImage">
        <img src="<?php echo $this->getUrl(); ?>10221276943_45e198c6c6_4k.jpg" id="mainImageSrc" />
      </div>
      <div class="actions-save" style="display:none;">
          <button type="button" class="action-cancel" data-role="cancel-button" data-image="10221276943_45e198c6c6_4k.jpg" data-type="jpg" title="<?php echo __('Cancel'); ?>"><span><?php echo __('Cancel'); ?></span></button>
          <button type="button" class="action-apply" data-role="apply-button" data-image="10221276943_45e198c6c6_4k.jpg" data-type="jpg" title="<?php echo __('Apply'); ?>"><span><?php echo __('Apply'); ?></span></button>
      </div>
      <div class="actions">
          <button type="button" class="action-flip" data-role="flip-button" data-image="10221276943_45e198c6c6_4k.jpg" data-type="jpg" title="<?php echo __('Flip image'); ?>"><span><?php echo __('Flip image'); ?></span></button>
          <button type="button" class="action-bw" data-role="bw-button" data-image="10221276943_45e198c6c6_4k.jpg" data-type="jpg" title="<?php echo __('Black & White Filter'); ?>"><span><?php echo __('Black & White Filter'); ?></span></button>
          <button type="button" class="action-sepia" data-role="sepia-button" data-image="10221276943_45e198c6c6_4k.jpg" data-type="jpg" title="<?php echo __('Sepia Filter'); ?>"><span><?php echo __('Sepia Filter'); ?></span></button>
      </div>
    </div>
    <div class="col-lg-4">
      <form class="form-horizontal"  id="frm_attachment" name="frm_attachment" method="post" enctype="multipart/form-data" action="<?php echo $this->getUrl(); ?>wallpaper/index/customize">
          <div class="browse-wrap">
            <input accept="image/*" id="attachment" name="attachment" type="file" value="">
          </div>
          
          <div class="row">
            <button type="submit" id="uploadAttachment" class="btn btn-primary"><?php echo __('Submit'); ?></button>
          </div>
      </form>

      <div id="attachmentFiles"></div>
    </div>  
	</div>
</div>

<style type="text/css">
    .mainImage-image-grayscale{ -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -o-filter: grayscale(100%); -ms-filter: grayscale(100%); filter: grayscale(100%); }

    .mainImage-image-sepia{ -webkit-filter: sepia(100%); -moz-filter: sepia(100%); -o-filter: sepia(100%); -ms-filter: sepia(100%); filter: sepia(100%); }

    .mainImage-image-flip{ transform: scale(-1, 1); -moz-transform: scale(-1, 1); -webkit-transform: scale(-1, 1); -o-transform: scale(-1, 1); -khtml-transform: scale(-1, 1); -ms-transform: scale(-1, 1); }
</style>


<script>

function getSizeInCM (sizeInPX) {  
   return sizeInPX * 2.54 / (96 * window.devicePixelRatio)
};

require(['jquery'], function ($) {

    $(document).ready(function ($) {

    	/**** Delete Image & Image Effects ****/
        $(document).on('click', '#attachmentFiles .action-remove', function(){
           if (window.confirm("Are you sure you want to delete?")) {
               var attachmentPath = $(this).attr("data-image");
               var divID = $(this).parents(".base-image").attr("id");
               var imageID = $(this).parents(".base-image").find(".hiddneattachID").val();
               
               jQuery.ajax({
                    url: "<?php echo $this->getUrl(); ?>wallpaper/index/deleteCustomize?isAjax=true",
                    type: "POST",
                    data: {filename: attachmentPath, form_key: window.FORM_KEY, imageID:imageID},
                    showLoader: true,
                    success: function (response) {
                        if(response.success == true){
                            var parentElements = $(".base-image#"+divID).prev().children();
                            $(".base-image#"+divID).remove();
                            if($(".base-image").length > 0)
                            {
                              $('#mainImageSrc').attr("src",parentElements.find('.wallpaper-image').attr('src'));
                              parentElements.find('.selectImage').attr('checked','checked');
                              var srcFilename = parentElements.find('.selectImage').attr('data-srcfilename');
                              var srcType = parentElements.find('.selectImage').attr('data-srctype');
                              $('.action-bw').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-sepia').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-flip').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-cancel').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-apply').attr('data-image',srcFilename).attr('data-type',srcType);
                            }
                            else
                            {
                              $('#mainImageSrc').attr("src", "<?php echo $this->getUrl(); ?>10221276943_45e198c6c6_4k.jpg");
                              var srcFilename = '10221276943_45e198c6c6_4k.jpg';
                              var srcType = 'jpg';
                              $('.action-bw').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-sepia').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-flip').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-cancel').attr('data-image',srcFilename).attr('data-type',srcType);
                              $('.action-apply').attr('data-image',srcFilename).attr('data-type',srcType);
                            }
                        }
                    },
                   error: function (response) {
                        alert(response.message);
                   }
                });
           } 
        });

        $(document).on('click', '.action-bw', function(){
           var attachmentPath = $(this).attr("data-image");
           $('.mainImage').addClass('mainImage-image-grayscale');
           $('div.actions').hide();
           $('div.actions-save').show();
           $('.action-apply').attr('data-action', '1');
        });

        $(document).on('click', '.action-sepia', function(){
           var attachmentPath = $(this).attr("data-image");
           $('.mainImage').addClass('mainImage-image-sepia');
           $('div.actions').hide();
           $('div.actions-save').show();
           $('.action-apply').attr('data-action', '2');
        });

        $(document).on('click', '.action-flip', function(){
           var attachmentPath = $(this).attr("data-image");
           $('.mainImage').addClass('mainImage-image-flip');
           $('div.actions').hide();
           $('div.actions-save').show();
           $('.action-apply').attr('data-action', '3');
        });
        
     	  $(document).on('click', '.action-cancel', function(){
           var attachmentPath = $(this).attr("data-image");
           $('.mainImage').removeClass('mainImage-image-grayscale').removeClass('mainImage-image-sepia').removeClass('mainImage-image-flip');
           $('div.actions').show();
           $('div.actions-save').hide();
           $('.action-apply').removeAttr('data-action');
        });

        $(document).on('change', "input[name='selectImage']", function(){
            var srcPath = $(this).attr("data-src");
            var srcType = $(this).attr("data-srctype");
            var srcFilename = $(this).attr("data-srcfilename")

            $('.action-bw').attr('data-image',srcFilename).attr('data-type',srcType);
            $('.action-sepia').attr('data-image',srcFilename).attr('data-type',srcType);
            $('.action-flip').attr('data-image',srcFilename).attr('data-type',srcType);
            $('.action-cancel').attr('data-image',srcFilename).attr('data-type',srcType);
            $('.action-apply').attr('data-image',srcFilename).attr('data-type',srcType);
            $('#mainImageSrc').attr("src", srcPath);
        });

        $(document).on('click', '.action-apply', function(){
           	var imageName = $(this).attr("data-image");
           	var imageType = $(this).attr("data-type");
           	var imageAction = $(this).attr("data-action");
           
           	jQuery.ajax({
                url: "<?php echo $this->getUrl(); ?>wallpaper/index/imageCustomize?isAjax=true",
                type: "POST",
                data: {filename: imageName, fileType:imageType, fileAction:imageAction},
                showLoader: true,
                success: function (response) {
                  if(response.error == false)
                  {
                    $('.action-bw').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-sepia').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-flip').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-cancel').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-apply').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

         			      $('.mainImage').removeClass('mainImage-image-grayscale').removeClass('mainImage-image-sepia').removeClass('mainImage-image-flip');
    		           	$('div.actions').show();
    		           	$('div.actions-save').hide();
    	           		$('.action-apply').removeAttr('data-action');

                    $("#attachmentFiles").append(response.data.html);
                    $('#mainImageSrc').attr("src", response.data.path);

                    // Create dummy image to get real width and height
                    $("<img>").attr("src", response.data.path).load(function(){
                      var realWidth = this.width;
                      var realHeight = this.height;
                      var width = getSizeInCM(realWidth);
                      var height = getSizeInCM(realHeight);
                      /*alert("Original width=" + width + ", " + "Original height=" + height);*/
                    });
                  }
                  else
                  {
                    $('.mainImage').removeClass('mainImage-image-grayscale').removeClass('mainImage-image-sepia').removeClass('mainImage-image-flip');
                    $('div.actions').hide();
                    $('div.actions-save').show();
                    alert(response.message);
                  }
                },
               error: function (response) {
                    alert(response.message);
               }
            });
        });
        

        /**** Upload Image ****/
        $('#uploadAttachment').click(function(e){e.preventDefault();  $('#attachment').trigger('click'); });
        
        $("#attachment").change(function(){
            var data = $("#frm_attachment").get(0);
            
            jQuery.ajax({
             	url: "<?php echo $this->getUrl(); ?>wallpaper/index/addCustomize?isAjax=true' ?>",
             	type: "POST",
             	data: new FormData(data),
             	processData: false,
             	contentType: false,
             	showLoader: true,
             	success: function (response) {
                  if(response.error == false)
                  {
               			$('.action-bw').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-sepia').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-flip').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-cancel').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);
               			$('.action-apply').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

               			$('div.actions').show();

                  	$("#attachmentFiles").append(response.data.html);
                    $('#mainImageSrc').attr("src", response.data.path);
                  	$('#frm_attachment')[0].reset();

                  	// Create dummy image to get real width and height
                    $("<img>").attr("src", response.data.path).load(function(){
                      var realWidth = this.width;
                      var realHeight = this.height;
                      var width = getSizeInCM(realWidth);
                      var height = getSizeInCM(realHeight);
                      /*alert("Original width=" + width + ", " + "Original height=" + height);*/
                    });
                  }
                  else
                  {
                    alert(response.message);
                    $('#frm_attachment')[0].reset();
                  }
             	},
              error: function (response) {
              	alert(response.message);
              	$('#frm_attachment')[0].reset();
              }
            });
        });
    });
});
</script>

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<img src="<?php echo $this->getUrl(); ?>10221276943_45e198c6c6_4k.jpg" id="mainImageSrc" />

</div>

</div>

</div>

<form class="form-horizontal" id="frm_attachment" name="frm_attachment" method="post" enctype="multipart/form-data" action="<?php echo $this->getUrl(); ?>wallpaper/index/customize">

</div>

</div>

</form>

</div>

.mainImage-image-grayscale{ -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -o-filter: grayscale(100%); -ms-filter: grayscale(100%); filter: grayscale(100%); }

.mainImage-image-sepia{ -webkit-filter: sepia(100%); -moz-filter: sepia(100%); -o-filter: sepia(100%); -ms-filter: sepia(100%); filter: sepia(100%); }

.mainImage-image-flip{ transform: scale(-1, 1); -moz-transform: scale(-1, 1); -webkit-transform: scale(-1, 1); -o-transform: scale(-1, 1); -khtml-transform: scale(-1, 1); -ms-transform: scale(-1, 1); }

</style>

function getSizeInCM (sizeInPX) {

return sizeInPX * 2.54 / (96 * window.devicePixelRatio)

};

require(['jquery'], function ($) {

$(document).ready(function ($) {

/**** Delete Image & Image Effects ****/

$(document).on('click', '#attachmentFiles .action-remove', function(){

if (window.confirm("Are you sure you want to delete?")) {

var attachmentPath = $(this).attr("data-image");

var divID = $(this).parents(".base-image").attr("id");

var imageID = $(this).parents(".base-image").find(".hiddneattachID").val();

jQuery.ajax({

url: "<?php echo $this->getUrl(); ?>wallpaper/index/deleteCustomize?isAjax=true",

type: "POST",

data: {filename: attachmentPath, form_key: window.FORM_KEY, imageID:imageID},

showLoader: true,

success: function (response) {

if(response.success == true){

var parentElements = $(".base-image#"+divID).prev().children();

$(".base-image#"+divID).remove();

if($(".base-image").length > 0)

{

$('#mainImageSrc').attr("src",parentElements.find('.wallpaper-image').attr('src'));

parentElements.find('.selectImage').attr('checked','checked');

var srcFilename = parentElements.find('.selectImage').attr('data-srcfilename');

var srcType = parentElements.find('.selectImage').attr('data-srctype');

$('.action-bw').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-sepia').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-flip').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-cancel').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-apply').attr('data-image',srcFilename).attr('data-type',srcType);

}

else

{

$('#mainImageSrc').attr("src", "<?php echo $this->getUrl(); ?>10221276943_45e198c6c6_4k.jpg");

var srcFilename = '10221276943_45e198c6c6_4k.jpg';

var srcType = 'jpg';

$('.action-bw').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-sepia').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-flip').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-cancel').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-apply').attr('data-image',srcFilename).attr('data-type',srcType);

}

error: function (response) {

alert(response.message);

}

});

}

});

$(document).on('click', '.action-bw', function(){

var attachmentPath = $(this).attr("data-image");

$('.mainImage').addClass('mainImage-image-grayscale');

$('div.actions').hide();

$('div.actions-save').show();

$('.action-apply').attr('data-action', '1');

});

$(document).on('click', '.action-sepia', function(){

var attachmentPath = $(this).attr("data-image");

$('.mainImage').addClass('mainImage-image-sepia');

$('div.actions').hide();

$('div.actions-save').show();

$('.action-apply').attr('data-action', '2');

});

$(document).on('click', '.action-flip', function(){

var attachmentPath = $(this).attr("data-image");

$('.mainImage').addClass('mainImage-image-flip');

$('div.actions').hide();

$('div.actions-save').show();

$('.action-apply').attr('data-action', '3');

});

$(document).on('click', '.action-cancel', function(){

var attachmentPath = $(this).attr("data-image");

$('.mainImage').removeClass('mainImage-image-grayscale').removeClass('mainImage-image-sepia').removeClass('mainImage-image-flip');

$('div.actions').show();

$('div.actions-save').hide();

$('.action-apply').removeAttr('data-action');

});

$(document).on('change', "input[name='selectImage']", function(){

var srcPath = $(this).attr("data-src");

var srcType = $(this).attr("data-srctype");

var srcFilename = $(this).attr("data-srcfilename")

$('.action-bw').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-sepia').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-flip').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-cancel').attr('data-image',srcFilename).attr('data-type',srcType);

$('.action-apply').attr('data-image',srcFilename).attr('data-type',srcType);

$('#mainImageSrc').attr("src", srcPath);

});

$(document).on('click', '.action-apply', function(){

var imageName = $(this).attr("data-image");

var imageType = $(this).attr("data-type");

var imageAction = $(this).attr("data-action");

jQuery.ajax({

url: "<?php echo $this->getUrl(); ?>wallpaper/index/imageCustomize?isAjax=true",

type: "POST",

data: {filename: imageName, fileType:imageType, fileAction:imageAction},

showLoader: true,

success: function (response) {

if(response.error == false)

{

$('.action-bw').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-sepia').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-flip').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-cancel').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-apply').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.mainImage').removeClass('mainImage-image-grayscale').removeClass('mainImage-image-sepia').removeClass('mainImage-image-flip');

$('div.actions').show();

$('div.actions-save').hide();

$('.action-apply').removeAttr('data-action');

$("#attachmentFiles").append(response.data.html);

$('#mainImageSrc').attr("src", response.data.path);

// Create dummy image to get real width and height

$("<img>").attr("src", response.data.path).load(function(){

var realWidth = this.width;

var realHeight = this.height;

var width = getSizeInCM(realWidth);

var height = getSizeInCM(realHeight);

/*alert("Original width=" + width + ", " + "Original height=" + height);*/

});

}

else

{

$('.mainImage').removeClass('mainImage-image-grayscale').removeClass('mainImage-image-sepia').removeClass('mainImage-image-flip');

$('div.actions').hide();

$('div.actions-save').show();

alert(response.message);

}

error: function (response) {

alert(response.message);

}

});

/**** Upload Image ****/

$('#uploadAttachment').click(function(e){e.preventDefault(); $('#attachment').trigger('click'); });

$("#attachment").change(function(){

var data = $("#frm_attachment").get(0);

jQuery.ajax({

url: "<?php echo $this->getUrl(); ?>wallpaper/index/addCustomize?isAjax=true' ?>",

type: "POST",

data: new FormData(data),

processData: false,

contentType: false,

showLoader: true,

success: function (response) {

if(response.error == false)

{

$('.action-bw').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-sepia').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-flip').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-cancel').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('.action-apply').attr('data-image',response.data.filename).attr('data-type',response.data.fileType);

$('div.actions').show();

$("#attachmentFiles").append(response.data.html);

$('#mainImageSrc').attr("src", response.data.path);

$('#frm_attachment')[0].reset();

// Create dummy image to get real width and height

$("<img>").attr("src", response.data.path).load(function(){

var realWidth = this.width;

var realHeight = this.height;

var width = getSizeInCM(realWidth);

var height = getSizeInCM(realHeight);

/*alert("Original width=" + width + ", " + "Original height=" + height);*/

});

}

else

{

alert(response.message);

$('#frm_attachment')[0].reset();

}

error: function (response) {

alert(response.message);

$('#frm_attachment')[0].reset();

}

});

</script>

Step2: Create one “AddCustomize.php” file to upload an image.

<?php
namespace Magemonkeys\Wallpaper\Controller\Index;

use Magento\Framework\Json\Helper\Data as JsonHelper;

class AddCustomize extends \Magento\Framework\App\Action\Action
{
    protected $_pageFactory;
	protected $connection;
    protected $_mediaDirectory;
    protected $_fileUploaderFactory;
    public $_storeManager;

	public function __construct(
		\Magento\Framework\App\Action\Context $context,
        \Magento\Framework\App\ResourceConnection $connection,
        JsonHelper $jsonHelper,
        \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,
        \Magento\Framework\Filesystem $filesystem,
        \Magento\MediaStorage\Model\File\UploaderFactory $fileUploaderFactory,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
		\Magento\Framework\View\Result\PageFactory $pageFactory)
	{
		$this->_pageFactory = $pageFactory;
        $this->connection = $connection;      
        $this->jsonHelper = $jsonHelper;
        $this->resultJsonFactory = $resultJsonFactory;
        $this->_mediaDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA);
        $this->_fileUploaderFactory = $fileUploaderFactory;
        $this->_storeManager = $storeManager;
		return parent::__construct($context);
	}

	public function execute(){
        
        $_postData = $this->getRequest()->getPost();
        
        $message = "";
        $newFileName = "";
        $error = false;
        $data = array();
        
        try{
            $target = $this->_mediaDirectory->getAbsolutePath('wallpaper/');        
            
            //attachment is the input file name posted from your form
            $uploader = $this->_fileUploaderFactory->create(['fileId' => 'attachment']);
            
            $_fileType = $uploader->getFileExtension();
            $uniqid = uniqid();
            $newFileName = $uniqid .'.'. $_fileType;
            
            /** Allowed extension types */
            $uploader->setAllowedExtensions(['jpg', 'jpeg', 'png']);
            /** rename file name if already exists */
            $uploader->setAllowRenameFiles(true);
            
            $result = $uploader->save($target, $newFileName); //Use this if you want to change your file name
            //$result = $uploader->save($target);
            if ($result['file']) {
                
                $_mediaUrl = $this->_storeManager->getStore()->getBaseUrl(\Magento\Framework\UrlInterface::URL_TYPE_MEDIA);
                
                $_src = $_mediaUrl.'wallpaper/'.$newFileName;
                
                $error = false;
                $message = __("File has been successfully uploaded");
                
                $html = '<div class="image item base-image" data-role="image" id="'. $uniqid .'">
                            <div class="wallpaper-image-wrapper">
                                <div class="radioContainer">
                                    <input data-src="'.$_src.'" data-srctype="'. $_fileType .'" data-srcfilename="'. $newFileName .'" checked="checked" class="selectImage selectImage-'. $uniqid .'" type="radio" name="selectImage" value="'. $uniqid .'" />
                                </div>
                                <div class="imageContainer">
                                    <img class="wallpaper-image" data-role="image-element" src="'.$_src.'" alt="">
                                </div>
                                <div class="delete-action">
                                    <button type="button" class="action-remove" data-role="delete-button" data-image="'.$newFileName.'" title="'. __('Delete image') .'"><span>'. __('Delete image') .'</span></button>
                                </div>
                            </div>
                        </div>';
                
                $data = array('filename' => $newFileName, 'path' => $_mediaUrl.'wallpaper/'.$newFileName, 'fileType' => $_fileType, 'html' => $html);
            }
        } catch (\Exception $e) {
            $error = true;
            $message = $e->getMessage();
        }
        
        $resultJson = $this->resultJsonFactory->create();

        return $resultJson->setData([
                    'message' => $message,
                    'data' => $data,
                    'error' => $error
        ]);
    }
}

<?php

namespace Magemonkeys\Wallpaper\Controller\Index;

use Magento\Framework\Json\Helper\Data as JsonHelper;

class AddCustomize extends \Magento\Framework\App\Action\Action

{

protected $_pageFactory;

protected $connection;

protected $_mediaDirectory;

protected $_fileUploaderFactory;

public $_storeManager;

public function __construct(

\Magento\Framework\App\Action\Context $context,

\Magento\Framework\App\ResourceConnection $connection,

JsonHelper $jsonHelper,

\Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,

\Magento\Framework\Filesystem $filesystem,

\Magento\MediaStorage\Model\File\UploaderFactory $fileUploaderFactory,

\Magento\Store\Model\StoreManagerInterface $storeManager,

\Magento\Framework\View\Result\PageFactory $pageFactory)

{

$this->_pageFactory = $pageFactory;

$this->connection = $connection;

$this->jsonHelper = $jsonHelper;

$this->resultJsonFactory = $resultJsonFactory;

$this->_mediaDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA);

$this->_fileUploaderFactory = $fileUploaderFactory;

$this->_storeManager = $storeManager;

return parent::__construct($context);

}

public function execute(){

$_postData = $this->getRequest()->getPost();

$message = "";

$newFileName = "";

$error = false;

$data = array();

try{

$target = $this->_mediaDirectory->getAbsolutePath('wallpaper/');

//attachment is the input file name posted from your form

$uploader = $this->_fileUploaderFactory->create(['fileId' => 'attachment']);

$_fileType = $uploader->getFileExtension();

$uniqid = uniqid();

$newFileName = $uniqid .'.'. $_fileType;

/** Allowed extension types */

$uploader->setAllowedExtensions(['jpg', 'jpeg', 'png']);

/** rename file name if already exists */

$uploader->setAllowRenameFiles(true);

$result = $uploader->save($target, $newFileName); //Use this if you want to change your file name

//$result = $uploader->save($target);

if ($result['file']) {

$_mediaUrl = $this->_storeManager->getStore()->getBaseUrl(\Magento\Framework\UrlInterface::URL_TYPE_MEDIA);

$_src = $_mediaUrl.'wallpaper/'.$newFileName;

$error = false;

$message = __("File has been successfully uploaded");

$html = '<div class="image item base-image" data-role="image" id="'. $uniqid .'">

</div>

</div>

<button type="button" class="action-remove" data-role="delete-button" data-image="'.$newFileName.'" title="'. __('Delete image') .'"><span>'. __('Delete image') .'</span></button>

</div>

</div>';

$data = array('filename' => $newFileName, 'path' => $_mediaUrl.'wallpaper/'.$newFileName, 'fileType' => $_fileType, 'html' => $html);

}

} catch (\Exception $e) {

$error = true;

$message = $e->getMessage();

}

$resultJson = $this->resultJsonFactory->create();

return $resultJson->setData([

'message' => $message,

'data' => $data,

'error' => $error

]);

}

Step3: Create one “DeleteCustomize.php” file to delete your uploaded image.

<?php
namespace Magemonkeys\Wallpaper\Controller\Index;

use Magento\Framework\Json\Helper\Data as JsonHelper;

class DeleteCustomize extends \Magento\Framework\App\Action\Action
{
    protected $_pageFactory;
	protected $connection;
    protected $_mediaDirectory;
    protected $_fileUploaderFactory;
    public $_storeManager;
    protected $_file;

	public function __construct(
		\Magento\Framework\App\Action\Context $context,
        \Magento\Framework\App\ResourceConnection $connection,
        JsonHelper $jsonHelper,
        \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,
        \Magento\Framework\Filesystem $filesystem,
        \Magento\MediaStorage\Model\File\UploaderFactory $fileUploaderFactory,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Framework\Filesystem\Driver\File $file,
		\Magento\Framework\View\Result\PageFactory $pageFactory)
	{
		$this->_pageFactory = $pageFactory;
        $this->connection = $connection;      
        $this->jsonHelper = $jsonHelper;
        $this->resultJsonFactory = $resultJsonFactory;
        $this->_mediaDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA);
        $this->_fileUploaderFactory = $fileUploaderFactory;
        $this->_storeManager = $storeManager;
        $this->_file = $file;
		return parent::__construct($context);
	}

	public function execute(){
        
        $_postData = $this->getRequest()->getPost();
        
        $message = "";
        $newFileName = "";
        $success = false;
        
        $mediaRootDir = $this->_mediaDirectory->getAbsolutePath();
        $_fileName = $mediaRootDir .'wallpaper/'. $_postData['filename'];
        if ($this->_file->isExists($_fileName))  {
            try{
                /*$this->attachment->load($_postData['imageID']);
                $this->attachment->delete();*/
                
                $this->_file->deleteFile($_fileName);
                $message = __('File removed successfully.');
                $success = true;
            } catch (Exception $ex) {
                $message = $ex->getMessage();
                $success = false;
            }
        }else{
            $message = "File not found.";
            $success = false;
        }
        
        $resultJson = $this->resultJsonFactory->create();

        return $resultJson->setData([
                    'message' => $message,
                    'data' => '',
                    'success' => $success
        ]);
    }
}

<?php

namespace Magemonkeys\Wallpaper\Controller\Index;

use Magento\Framework\Json\Helper\Data as JsonHelper;

class DeleteCustomize extends \Magento\Framework\App\Action\Action

{

protected $_pageFactory;

protected $connection;

protected $_mediaDirectory;

protected $_fileUploaderFactory;

public $_storeManager;

protected $_file;

public function __construct(

\Magento\Framework\App\Action\Context $context,

\Magento\Framework\App\ResourceConnection $connection,

JsonHelper $jsonHelper,

\Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,

\Magento\Framework\Filesystem $filesystem,

\Magento\MediaStorage\Model\File\UploaderFactory $fileUploaderFactory,

\Magento\Store\Model\StoreManagerInterface $storeManager,

\Magento\Framework\Filesystem\Driver\File $file,

\Magento\Framework\View\Result\PageFactory $pageFactory)

{

$this->_pageFactory = $pageFactory;

$this->connection = $connection;

$this->jsonHelper = $jsonHelper;

$this->resultJsonFactory = $resultJsonFactory;

$this->_mediaDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA);

$this->_fileUploaderFactory = $fileUploaderFactory;

$this->_storeManager = $storeManager;

$this->_file = $file;

return parent::__construct($context);

}

public function execute(){

$_postData = $this->getRequest()->getPost();

$message = "";

$newFileName = "";

$success = false;

$mediaRootDir = $this->_mediaDirectory->getAbsolutePath();

$_fileName = $mediaRootDir .'wallpaper/'. $_postData['filename'];

if ($this->_file->isExists($_fileName)) {

try{

/*$this->attachment->load($_postData['imageID']);

$this->attachment->delete();*/

$this->_file->deleteFile($_fileName);

$message = __('File removed successfully.');

$success = true;

} catch (Exception $ex) {

$message = $ex->getMessage();

$success = false;

}

}else{

$message = "File not found.";

$success = false;

}

$resultJson = $this->resultJsonFactory->create();

return $resultJson->setData([

'message' => $message,

'data' => '',

'success' => $success

]);

}

Step4: Create one “ImageCustomize.php” file to give the effects to your uploaded image. I have given some effect to an image as per my requirements.

<?php
namespace Magemonkeys\Wallpaper\Controller\Index;

use Magento\Framework\Json\Helper\Data as JsonHelper;

class ImageCustomize extends \Magento\Framework\App\Action\Action
{
    protected $_pageFactory;
	protected $connection;
    protected $_mediaDirectory;
    protected $_rootDirectory;
    protected $_fileUploaderFactory;
    public $_storeManager;
    protected $_file;

	public function __construct(
		\Magento\Framework\App\Action\Context $context,
        \Magento\Framework\App\ResourceConnection $connection,
        JsonHelper $jsonHelper,
        \Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,
        \Magento\Framework\Filesystem $filesystem,
        \Magento\MediaStorage\Model\File\UploaderFactory $fileUploaderFactory,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Framework\Filesystem\Driver\File $file,
		\Magento\Framework\View\Result\PageFactory $pageFactory)
	{
		$this->_pageFactory = $pageFactory;
        $this->connection = $connection;      
        $this->jsonHelper = $jsonHelper;
        $this->resultJsonFactory = $resultJsonFactory;
        $this->_mediaDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA);
        $this->_rootDirectory = $filesystem->getDirectoryRead(\Magento\Framework\App\Filesystem\DirectoryList::ROOT);
        $this->_fileUploaderFactory = $fileUploaderFactory;
        $this->_storeManager = $storeManager;
        $this->_file = $file;
		return parent::__construct($context);
	}

	public function execute(){
        
        $_postData = $this->getRequest()->getPost();
        
        $message = "";
        $newFileName = "";
        $error = false;
        $data = array();
        $uniqid = uniqid();
        $mediaRootDir = $this->_mediaDirectory->getAbsolutePath();
        $rootDirectory = $this->_rootDirectory->getAbsolutePath();
        $_fileType = $_postData['fileType'];
        $_fileAction = $_postData['fileAction'];

        if($_postData['filename'] == '10221276943_45e198c6c6_4k.jpg')
        {
            $newFileName = $uniqid .'.'.$_fileType;
            $filePath = $rootDirectory . $_postData['filename'];
            $_fileName = $mediaRootDir .'wallpaper/'. $newFileName;
            $newFullPathOfImage = $_fileName;
            copy($filePath, $_fileName);
        }
        else
        {
            $_fileName = $mediaRootDir .'wallpaper/'. $_postData['filename'];
            $newFullPathOfImage = $mediaRootDir .'wallpaper/'. $uniqid .'.'.$_fileType;
            $newFileName = $uniqid .'.'.$_fileType;
        }

        if ($this->_file->isExists($_fileName)){
            try{
                if($_fileAction == 1) /*** Grayscale (Black & White) ***/
                {
                    if(strtolower($_fileType) == 'jpg' || strtolower($_fileType) == 'jpeg')
                    {
                        $im = ImageCreateFromJpeg($_fileName); 

                        $imgw = imagesx($im);
                        $imgh = imagesy($im);

                        for ($i=0; $i<$imgw; $i++)
                        {
                            for ($j=0; $j<$imgh; $j++)
                            {
                                // get the rgb value for current pixel
                                $rgb = ImageColorAt($im, $i, $j); 

                                // extract each value for r, g, b
                                $rr = ($rgb >> 16) & 0xFF;
                                $gg = ($rgb >> 8) & 0xFF;
                                $bb = $rgb & 0xFF;

                                // get the Value from the RGB value
                                $g = round(($rr + $gg + $bb) / 3);

                                // grayscale values have r=g=b=g
                                $val = imagecolorallocate($im, $g, $g, $g);

                                // set the gray value
                                imagesetpixel ($im, $i, $j, $val);
                            }
                        }

                        imagejpeg($im, $newFullPathOfImage);
                        $message = __('Image converted to grayscale.');
                        imagedestroy($im);
                    }
                    else
                    {
                        $im = imagecreatefrompng($_fileName);

                        if($im && imagefilter($im, IMG_FILTER_GRAYSCALE))
                        {
                            $message = __('Image converted to grayscale.');
                            
                            imagepng($im, $newFullPathOfImage);
                            imagedestroy($im);
                        }
                        else
                        {
                            $message = __('Conversion to grayscale failed.');
                        }
                    }
                }
                else if($_fileAction == 2) /*** Sepia Color Scale ***/
                {
                    if(strtolower($_fileType) == 'jpg' || strtolower($_fileType) == 'jpeg')
                    {
                        // Load
                        $im = ImageCreateFromJpeg($_fileName);

                        imagefilter($im, IMG_FILTER_GRAYSCALE);
                        imagefilter($im,IMG_FILTER_BRIGHTNESS,-10);
                        imagefilter($im, IMG_FILTER_COLORIZE, 65, 50, 0);
                        
                        // Output
                        imagejpeg($im, $newFullPathOfImage);
                        imagedestroy($im);
                    }
                    else
                    {
                        // Load
                        $im = imagecreatefrompng($_fileName);

                        imagefilter($im, IMG_FILTER_GRAYSCALE);
                        imagefilter($im,IMG_FILTER_BRIGHTNESS,-10);
                        imagefilter($im, IMG_FILTER_COLORIZE, 65, 50, 0);
                        
                        // Output
                        imagepng($im, $newFullPathOfImage);
                        imagedestroy($im);
                    }

                    $message = __('Image converted to sepia.');
                }
                else if($_fileAction == 3) /*** Flip Image ***/
                {
                    if(strtolower($_fileType) == 'jpg' || strtolower($_fileType) == 'jpeg')
                    {
                        // Load
                        $im = ImageCreateFromJpeg($_fileName);

                        // Flip it horizontally
                        imageflip($im, IMG_FLIP_HORIZONTAL);

                        // Output
                        imagejpeg($im, $newFullPathOfImage);
                        imagedestroy($im);
                    }
                    else
                    {
                        // Load
                        $im = imagecreatefrompng($_fileName);

                        // Flip it horizontally
                        imageflip($im, IMG_FLIP_HORIZONTAL);

                        // Output
                        imagepng($im, $newFullPathOfImage);
                        imagedestroy($im);
                    }

                    $message = __('Image flipped.');
                }



                $_mediaUrl = $this->_storeManager->getStore()->getBaseUrl(\Magento\Framework\UrlInterface::URL_TYPE_MEDIA);
                
                $_src = $_mediaUrl.'wallpaper/'.$newFileName;
                
                $message = __("File has been successfully uploaded");
                
                $html = '<div class="image item base-image" data-role="image" id="'. $uniqid .'">
                            <div class="wallpaper-image-wrapper">
                                <div class="radioContainer">
                                    <input data-src="'.$_src.'" data-srctype="'. $_fileType .'" data-srcfilename="'. $newFileName .'" checked="checked" class="selectImage selectImage-'. $uniqid .'" type="radio" name="selectImage" value="'. $uniqid .'" />
                                </div>
                                <div class="imageContainer">
                                    <img class="wallpaper-image" data-role="image-element" src="'.$_src.'" alt="">
                                </div>
                                <div class="delete-action">
                                    <button type="button" class="action-remove" data-role="delete-button" data-image="'.$newFileName.'" title="'. __('Delete image') .'"><span>'. __('Delete image') .'</span></button>
                                </div>
                            </div>
                        </div>';
                
                $data = array('filename' => $newFileName, 'path' => $_mediaUrl.'wallpaper/'.$newFileName, 'fileType' => $_fileType, 'html' => $html);
                $error = false;
            }
            catch (Exception $ex) {
                $message = $ex->getMessage();
                $error = true;
            }
        }else{
            $message = __("File not found.");
            $error = true;
        }
        
        $resultJson = $this->resultJsonFactory->create();

        return $resultJson->setData([
            'message' => $message,
            'data' => $data,
            'error' => $error
        ]);
    }
}

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<?php

namespace Magemonkeys\Wallpaper\Controller\Index;

use Magento\Framework\Json\Helper\Data as JsonHelper;

class ImageCustomize extends \Magento\Framework\App\Action\Action

{

protected $_pageFactory;

protected $connection;

protected $_mediaDirectory;

protected $_rootDirectory;

protected $_fileUploaderFactory;

public $_storeManager;

protected $_file;

public function __construct(

\Magento\Framework\App\Action\Context $context,

\Magento\Framework\App\ResourceConnection $connection,

JsonHelper $jsonHelper,

\Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory,

\Magento\Framework\Filesystem $filesystem,

\Magento\MediaStorage\Model\File\UploaderFactory $fileUploaderFactory,

\Magento\Store\Model\StoreManagerInterface $storeManager,

\Magento\Framework\Filesystem\Driver\File $file,

\Magento\Framework\View\Result\PageFactory $pageFactory)

{

$this->_pageFactory = $pageFactory;

$this->connection = $connection;

$this->jsonHelper = $jsonHelper;

$this->resultJsonFactory = $resultJsonFactory;

$this->_mediaDirectory = $filesystem->getDirectoryWrite(\Magento\Framework\App\Filesystem\DirectoryList::MEDIA);

$this->_rootDirectory = $filesystem->getDirectoryRead(\Magento\Framework\App\Filesystem\DirectoryList::ROOT);

$this->_fileUploaderFactory = $fileUploaderFactory;

$this->_storeManager = $storeManager;

$this->_file = $file;

return parent::__construct($context);

}

public function execute(){

$_postData = $this->getRequest()->getPost();

$message = "";

$newFileName = "";

$error = false;

$data = array();

$uniqid = uniqid();

$mediaRootDir = $this->_mediaDirectory->getAbsolutePath();

$rootDirectory = $this->_rootDirectory->getAbsolutePath();

$_fileType = $_postData['fileType'];

$_fileAction = $_postData['fileAction'];

if($_postData['filename'] == '10221276943_45e198c6c6_4k.jpg')

{

$newFileName = $uniqid .'.'.$_fileType;

$filePath = $rootDirectory . $_postData['filename'];

$_fileName = $mediaRootDir .'wallpaper/'. $newFileName;

$newFullPathOfImage = $_fileName;

copy($filePath, $_fileName);

}

else

{

$_fileName = $mediaRootDir .'wallpaper/'. $_postData['filename'];

$newFullPathOfImage = $mediaRootDir .'wallpaper/'. $uniqid .'.'.$_fileType;

$newFileName = $uniqid .'.'.$_fileType;

}

if ($this->_file->isExists($_fileName)){

try{

if($_fileAction == 1) /*** Grayscale (Black & White) ***/

{

if(strtolower($_fileType) == 'jpg' || strtolower($_fileType) == 'jpeg')

{

$im = ImageCreateFromJpeg($_fileName);

$imgw = imagesx($im);

$imgh = imagesy($im);

for ($i=0; $i<$imgw; $i++)

{

for ($j=0; $j<$imgh; $j++)

{

// get the rgb value for current pixel

$rgb = ImageColorAt($im, $i, $j);

// extract each value for r, g, b

$rr = ($rgb >> 16) & 0xFF;

$gg = ($rgb >> 8) & 0xFF;

$bb = $rgb & 0xFF;

// get the Value from the RGB value

$g = round(($rr + $gg + $bb) / 3);

// grayscale values have r=g=b=g

$val = imagecolorallocate($im, $g, $g, $g);

// set the gray value

imagesetpixel ($im, $i, $j, $val);

}

imagejpeg($im, $newFullPathOfImage);

$message = __('Image converted to grayscale.');

imagedestroy($im);

}

else

{

$im = imagecreatefrompng($_fileName);

if($im && imagefilter($im, IMG_FILTER_GRAYSCALE))

{

$message = __('Image converted to grayscale.');

imagepng($im, $newFullPathOfImage);

imagedestroy($im);

}

else

{

$message = __('Conversion to grayscale failed.');

}

else if($_fileAction == 2) /*** Sepia Color Scale ***/

{

if(strtolower($_fileType) == 'jpg' || strtolower($_fileType) == 'jpeg')

{

// Load

$im = ImageCreateFromJpeg($_fileName);

imagefilter($im, IMG_FILTER_GRAYSCALE);

imagefilter($im,IMG_FILTER_BRIGHTNESS,-10);

imagefilter($im, IMG_FILTER_COLORIZE, 65, 50, 0);

// Output

imagejpeg($im, $newFullPathOfImage);

imagedestroy($im);

}

else

{

// Load

$im = imagecreatefrompng($_fileName);

imagefilter($im, IMG_FILTER_GRAYSCALE);

imagefilter($im,IMG_FILTER_BRIGHTNESS,-10);

imagefilter($im, IMG_FILTER_COLORIZE, 65, 50, 0);

// Output

imagepng($im, $newFullPathOfImage);

imagedestroy($im);

}

$message = __('Image converted to sepia.');

}

else if($_fileAction == 3) /*** Flip Image ***/

{

if(strtolower($_fileType) == 'jpg' || strtolower($_fileType) == 'jpeg')

{

// Load

$im = ImageCreateFromJpeg($_fileName);

// Flip it horizontally

imageflip($im, IMG_FLIP_HORIZONTAL);

// Output

imagejpeg($im, $newFullPathOfImage);

imagedestroy($im);

}

else

{

// Load

$im = imagecreatefrompng($_fileName);

// Flip it horizontally

imageflip($im, IMG_FLIP_HORIZONTAL);

// Output

imagepng($im, $newFullPathOfImage);

imagedestroy($im);

}

$message = __('Image flipped.');

}

$_mediaUrl = $this->_storeManager->getStore()->getBaseUrl(\Magento\Framework\UrlInterface::URL_TYPE_MEDIA);

$_src = $_mediaUrl.'wallpaper/'.$newFileName;

$message = __("File has been successfully uploaded");

$html = '<div class="image item base-image" data-role="image" id="'. $uniqid .'">

</div>

</div>

<button type="button" class="action-remove" data-role="delete-button" data-image="'.$newFileName.'" title="'. __('Delete image') .'"><span>'. __('Delete image') .'</span></button>

</div>

</div>';

$data = array('filename' => $newFileName, 'path' => $_mediaUrl.'wallpaper/'.$newFileName, 'fileType' => $_fileType, 'html' => $html);

$error = false;

}

catch (Exception $ex) {

$message = $ex->getMessage();

$error = true;

}

}else{

$message = __("File not found.");

$error = true;

}

$resultJson = $this->resultJsonFactory->create();

return $resultJson->setData([

'message' => $message,

'data' => $data,

'error' => $error

]);

}

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