README

This is Sobel operator (or Sobel filter) implementation on PHP. It used in image processing and computer vision, particularly within edge detection algorithms. Read full article in Wikipedia

Installation

composer require qmegas/sobel-operator

Requirements

PHP >= 7.0

Usage Examples

<?php

$sobel = new \Qmegas\SobelOperator();
$image = imagecreatefromjpeg('1.jpg');
header('Content-type: image/png');
imagepng($sobel->applyFilter($image));

Options

<?php

$sobel = new \Qmegas\SobelOperator();
$image = imagecreatefromjpeg('1.jpg');
header('Content-type: image/png');
imagepng($sobel->applyFilter($image, [
	'flat' => true,
	'threshold' => 30,
]));