NANY 2012 Entry Information
| Application Name | PerceptualDiff GUI |
| Version | 1.0 |
| Short Description | Batch compare two branches of image files in a human visible (perceptual - not binary) way. Move and Rename files depending on match results |
| Supported OSes | Windows XP/Vista/7 |
| Setup File | http://www.jotosoft.de/perdiffgui |
| System Requirements | Nothing special. Its a portable app! |
| Author Info | Most regular DoCos know me. And others i won't chase away with any picture of me  |
| Description | Inspired by a request from DC member Tat1990, who dug up a nice utility named Perceptual Diff, which compares two images in a perceptual (respecting human vision) way for differences, the idea to this app was born. Tat1990 complained, that the Perceptual Diff utility is a hard to handle CLI application and lacks the capability to compare a whole branch (subtree) of images against another branch of images in batch mode. Also she was in need to move the images from branch1 (i.e. some new images you want to add to your collection) to branch2 (i.e. a "library" or your collection) under the subdir of the image of branch2 (your collection) that best match the actual image of branch1 (the new images to add), keeping all the original subdirs of the branch1 image. Furthermore she wanted to rename the image from branch1 following the best match image filename of branch2. To help her out here, i wrote the PerceptualDiff GUI (Perceptual Diff Graphic User Interface) app, that firstly gives the possibility to nicely and easily handle all the parameters of the Perceptual Diff CLI utility with TextControls, SpinControls and Sliders. Secondly it adds move, rename and batch capability of an unlimited amount of image files processed unnattendedly. And lastly you get a nice logfile for the archives with all actions that PerceptualDiff GUI did or would have done. Moving and Renaming are not mandantory, so you can also just get a report of which images match best with which other. And as this is a portable app that is self contained and don't need any installation you can use it everywhere just right out of the box. After that i realized, that this maybe useful for others too and developed the quick and dirty thing up to a usable and showable application. And with the upcoming NANY event, that was my chance to join the game. And here it is. A word about the Perceptual Diff utility. My app is just a convinient frontend to the Perceptual Diff utility of Hector Yee (http://pdiff.sourceforge.net). This utility uses a special comparing method that is not simply a binary byte-by-byte comparison. Rather this utility respects some rules of human vision and therefore compares the two images like a human would look at these pictures and decide if they are similar or totally different. The threshold for what is considered similar is adjustable. PerceptualDiff GUI always finds the BEST PERCEPTUAL MATCH of the images, depending on the given threshhold and based on the results returned by Hectors Perceptual Diff utility, comparing every picture from branch1 with every picture on branch2. |
| Features |
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| Screenshots | |
| Installation | No installation needed. It's a portable app. Just unpack and run the exe file. |
| Using the application | Mostly self explanatory. For more information about Perceptual Diff utility, please see the above mentioned Homepage of Hector Yee. |
| Uninstalling | To uninstall, just delete the program folder again. |
| Known Issues | None YET! |
Suggestions are welcome. Hope this program is useful to anyone else than Tat1990.
Happy perceptual comparing
JoTo
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