The command line is to compare between images is quite similar to the ImageMagick’s compare tool except you need to include the -output option. This is not really a problem because the image format can be easily converted through online web services or even Microsoft Paint that is built in to the Windows operating system. It is only 20KB in file size and supports a very limited number of image formats, which are TIFF and PNG. PerceptualDiff is an open source command line image comparison tool hosted on SourceForge. The difference is highlighted in red color. The command line below will use ImageMagick’s compare.exe tool to compare between the firstimage.png and secondimage.png file, and the difference will be saved to new file called outputdifference.png.Ĭompare.exe firstimage.png secondimage.png outputdifference.png Although the utilities are command line based, the Windows binary package is currently at over 75MB in size and you only need the single compare.exe tool that is found in the ImageMagick archive. ImageMagick comes with a few command line utilities to manipulate images. Then use the crop function to cut out areas that are out of the photo. To use any of the image comparison programs below on the Photo Hunt game, you should first save the two images as different files either using a screenshot capturing software or by pressing the Print Screen button and paste it to Paint.
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