TinEye's MatchEngine API offers image recognition capabilities that can find duplicates and derivatives of existing images in an image collection. This API compares incoming profile or UGC images against an image blacklist, and identifies pictures with transformations such as watermarks or cropping. The MatchEngine REST API responds in JSON and XML, and uses HTTP Basic Auth for authentication. TinEye offers 4 paid plans customized to the developer's needs.
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