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VisiPics has gotten a lot of votes, but v1.3 lacks Visual Similarity's ability to function as a reverse image search engine like Tineye for your image files--that is, to specify an image that you want to find all the matches for in your collection. This is needed, for example, if you have a screenshot of a video that you want to find *where* in the video the screenshot comes from. You save the video as a series of BMP images, such as with VirtualDub, with the frame number included in the filename, and then use Visual Similarity's Search button to find the best match. If the original screeenshot is a different size or has a logo, you can improve your success rate by using AVISynth's BicubicResize and Crop filters on the video to match it to the screenshot before splitting it into images. Also speeds up Visual Similarity's searches to use smaller images.
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