How to implement a simple image edge detection in php

This article will introduce to you how to implement a simple image edge detection in PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

php implements a simple image edge detection

A simple image edge detection method

Rough steps:

• Scale the image to improve efficiency

• Grayscale the image

• Calculate edges based on brightness

The third step is the most critical. There are many methods used here to directly compare adjacent brightness.

How to use:

Installation

composer require lizhichao/one-img

Use

$img_path = '1.jpg';
$img = new \OneImg\Border();
$img->setImg($img_path)
    ->scale(300, 300)
    ->outline()
    ->save(); //输出到浏览器

Effect

##Code Warehouse

https://github.com/lizhichao/doImg

Recommended Learning :

php video tutorial

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