Joint bitstream level identification and retrieval method of JPEG 2000 images for digital cinema

A joint bitstream level identification and retrieval method for JPEG 2000 images is proposed in this paper. Although the main purpose is to identify a JPEG 2000 image, the proposed method simultaneously retrieves JPEG 2000 images from a certain query with the computation of similarity. The proposed method uses the number of zero bitplanes, which is obtained by parsing the header information without decoding JPEG 2000 codestream, to achieve joint identification and retrieving of JPEG 2000 image. Some experimental results on retrieving JPEG 2000 images are provided to evaluate the performance of the proposed method. The main advantage is not only accuracy but also fast processing. Since there is no need to decode JPEG 2000 images in the proposed method, averaged time consumption due to retrieving operation is about less than 1[ms] and is independent on image size. Moreover, the proposed method can be combined with the scalability of JPEG 2000 codestream to satisfy trade-off between accuracy and speed.