Image coding for content-based retrieval
Mitchell D. Swanson, Srinath Hosur, Ahmed H. Tewfik · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1996
We develop a new coding technique for content-based retrieval of images and text documents which minimizes a weighted sum of the expected compressed file size and query response time. Files are coded into three parts: (1) a header consisting of concatenated query term codewords, (2) locations of the query terms, and (3) the remainder of the file. The coding algorithm specifies the relative position and codeword length of all query terms. Our approach leads to a progressive refinement retrieval by successively reducing the number of searched files as more bits are read. It also supports progressive transmission.