A fast imaging indexing technique in JPEG compressed domain

In this paper, we propose a fast, simple yet effective technique of indexing compressed images directly in their bit streams rather than DCT coefficients or pixels. The advantage of our proposed technique lies in the fact that the need for decompression is completely eliminated. Our technique only needs to examine the input bit stream and construct indexing keys out of them to characterize the content of their corresponding compressed images. Initial experiments encourage further investigation and support our proposed design.