The key is enough identifiable, but irrelevant detail in the rest of the image to confuse the engine. The best way to defeat automated image searching is by providing alternative images that cannot be identified or come from conflicting sources, and ones that confuse the specified pattern to be identified.įor example, if you provide an image composed of three images in alternating bands or strips and ask for the identification of the image composed from only every third band, so that, if isolated from the other bands, would appear as one image with gaps (where the other images' bands overlapped).Ī human brain invokes "Closure" to perceptually connect the relevant images into one cohesive one that can be identified.
If it's possible to run the game using fanart (since you're more likely to get appropriate permission to use fanart than canonical content) it's probably better to do that. Secondarily: The plan as a whole - using copyrighted images without first seeking appropriate permissions from their owners, even assuming you provide attribution as soon as the puzzle is solved - puts you at risk of a takedown request or other sort of legal action, particularly if you're running the game in any volume. Unfortunately, I don't have the technical details on how this can be achieved currently, just that I've observed that the images used in Flash/Shockwave stuff has that property. Ideally, find a way to show the image in an encapsulated form the user can't directly interact (copy -> paste) with. With especially popular images, this might not work, however. JPEGs are particularly bad about this, PNGs not so much. Reverse image searches start by using some data that gets logged intrinsically into the image, which is probably why your obfuscation techniques haven't been working. Try switching the file format you're saving in.
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