Search-by-Video

A sign-language dictionary search technique in which a user performs a sign into a webcam or camera and computer-vision-based sign recognition returns a ranked list of candidate dictionary entries. Search-by-video is easier for novice signers than search-by-feature because it does not require the user to know and select linguistic properties such as handshape or location, but current sign-recognition technology is imperfect — desired signs may appear well down the result list, and accuracy degrades with poor lighting, cluttered backgrounds, or unpractised performance. This paradigm has been studied for American Sign Language (ASL), British Sign Language (BSL), Croatian Sign Language, and others, and is increasingly paired with filtering (hybrid search) to improve user experience while sign-recognition AI continues to mature.