https://github.com/ukushu/imgcomparator

https://github.com/ukushu/imgcomparator

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/ukushu/imgcomparator
• Owner: ukushu
• Created: 2017-03-11T15:06:56.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-03-11T15:36:06.000Z (over 8 years ago)
• Last Synced: 2025-05-04T04:32:58.731Z (5 months ago)
• Language: C#
• Size: 7.81 KB
• Stars: 34
• Watchers: 3
• Forks: 12
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# ImgComparator

Here is realized simple idea to comare images to find similar.

It's generate 256 bit image hash: Change img size to 16x16px(by default, but you can change size) and reduce colors to black/white (which equals true/false in this console output)

This give you ability to find duplicates/similar images.

Lets try to compare the following imgs:

![Alt text](http://image.prntscr.com/image/9f02f5e2cd2b4f469e06a7c1621d2a67.png "Algorithm to compare two images in C#")

And you will got the following hash:

![Alt text](http://image.prntscr.com/image/56e01d77a2f54318b3d46e4a2038540d.png "Algorithm to compare two images in C#")

Examples of usage:

```

var comparator = new ImgComparator();

comparator.AddPicFolderByPath(somePathToSmeDir);

            

var _comparationResult = comparator.FindDuplicatesWithTollerance(80);

```

as result you will recieve ```List>```

```

int counter = 1;

foreach (var hashBlock in _comparationResult)

{

    Console.WriteLine($"Duplicates {counter++} Group:");

    foreach (var singleHash in hashBlock)

    {

        Console.WriteLine(singleHash.FilePath);

    }

}

```

This code will print all similar/duplicated images in selected path.

* subfolders included

* all imgs with the following extensions: ".bmp", ".gif", ".exif", ".jpg", ".jpeg", ".png", ".tiff"