PHP Classes

Images Comparison Class: Compare two images to check if they are identical

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Version License PHP version Categories
images-comparison 0.1Free To Use But R...5.0PHP 5, Graphics


This class can be used to compare two images to check if they are identical.

It can traverse two given images in the PNG format of the same size to determine which pixels are different.

The class can circle or fill the areas that are different with a given color. The resulting image is displayed as the current output in the PNG format.

Innovation Award
PHP Programming Innovation award nominee
August 2010
Number 8
Sometimes it is necessary to evaluate whether two images are identical in order to figure if one may be at least a partial copy of the other.

This class provides a pure PHP solution to compare two images and shows graphically how similar the images can be.

Manuel Lemos
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Name: Ming Choi <contact>
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Country: Hong Kong Hong Kong
Age: 31
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Innovation award
Innovation award
Nominee: 3x

  Files folder image Files  
File Role Description
Plain text file ImagesComparison.class.php Class main class
Accessible without login Plain text file example.php Example example
Accessible without login Image file a.png Photo example file
Accessible without login Image file b.png Photo example file

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All time:3,267
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User Ratings User Comments (3)
 All time
Beware! This program works well with the supplied example, b...
12 years ago (Steve Dix)
Why it compares only *.
13 years ago (Mike Oakley)
It doesn't work
13 years ago (Senex Senis)