Instance Search

Visual instance search is a task in the field of computer vision that aims to retrieve specific, identical instances from an image database that match the query image. This task requires the extraction of image features capable of fine-grained recognition to handle variations in viewpoint, scale, position, and lighting. Compared to holistic image representation, local features are essential for instance retrieval. Visual instance search not only improves retrieval accuracy but also has significant application value in areas such as product recognition and copyright protection.