![]() ![]() Twizzl distinguishes between challenges and tests.Ī challenge is a set of original objects, a set of comparative objects (both images in our case) and a set of correct decisions that a algorithm under test should make if it works correctly. For binary hashes one would normally use the normalized hamming distance and call it a match if some threshold falls below a certain limit.įacing that every algorithm has its own way of hash representation we realized that we have to abstract the task to the following Question: Are two objects (in this case images) the same or not? Given a printed and scanned image you would generate a hash using the same algorithm and settings and search the database for hashes being close to this one. In a later setup you would like to generate a hash for every image that should be identified and save the hash together with metadata like the name or contextual information in a database. Think about the following task: You try to find a perceptual image hashing algorithm that works best for matching images to its printed and scanned selfs. Example: Perceptual Image Hashing for Print-Scan usage What you wanna know is how good a specific algorithm with different settings or many different algorithms perform at this task. and you compare them to manipulated versions of them. You have original objects like images, videos, audio files etc. The underlying idea of Twizzle is the usecase of content identification. ![]() You can use it to evaluate every algorithm used for the task of content identification like facial recognition, video hashing and many more. Twizzle was originally developed to offer an easy to use and flexible benchmarking framework for perceptual image hashing algorithms having different approaches of generating, saving and comparing hashes. There are a lot of things we haven't gotten around to, and it would be useful to know what kind of functionality is valuable for you.Twizzle - A Multi-Purpose Benchmarking Framework Please try out Twizzle alpha and let us know what you think! In particular, there are a few important open topics (notation, accessibility, etc.) where I want to reach out to the community before we go to beta and v1.0. I've started a video series explaining Twizzle, and plan to cover new features as we work on them. You can see the influence of, and also the rather general puzzle support, which is almost entirely thanks to Tom. ![]() So far we have an "editor" (similar to ) and an "explorer", but we're working to combine those into a single app and have a few more experiments to bring in. General puzzle format handling (using the KPuzzle format, based on KSolve). (Square-1 doesn't currently check that corners stay together and is only 2D so far.)įrom Walter Randelshofer's Pretty Patterns database. (Clock is currently 2D and doesn't show pins yet.)īluetooth and keyboard input (doesn't work well for all puzzles right now).
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