How to sharpening an uploaded image in PHP ?

Question

How to sharpening an uploaded image in PHP ?

Is there some PHP libraries ? What is the best ?

Answer 1

Here's an unsharp mask for PHP. (Unsharp mask is one of the most common types of sharpening used.)

Here's another option (using GD).

Answer 2

ImageMagick offers best quality and lot of other features. Use adaptiveSharpenImage function:

<?php
try
{
    $image = new Imagick('image.png');
    $image->adaptiveSharpenImage(2,1);
}
catch(ImagickException $e)
{
    echo 'Error: ' , $e->getMessage();
    die();
}

header('Content-type: image/png');
echo $image;
?>

Answer 3

The most straightforward way is to use PHP's imageXXX() routines, such as imagecreatefromjpeg() etc. For more powerful scripted image editing, consider ImageMagick, or some other scriptable image processor.

Answer 4

In this PHP Manual comment, someone is referring to function imageconvolution(), complete with an example.

Answer 5

You can use ImageMagick. This call is one good solution