7.7 AN EFFICIENT JPEG TO MPEG-1 TRANSCODING ALG
Ja‐Ling Wu, Shiao-Jiuan Huang, Yuh-Ming Huang, Chiou-Ting Hsu, Jiun Shiu · 1996
From the view points of media editing, it is desired that pictures in an video sequence should be coded in picture-bypicture sense. But, in order to increase the compress ratio, the temporal correlation among pictures must be taken into account. Instead of using JPEG or MPEG alone, in this paper, a transform-domain transcoding approach is proposed to achieve the above goal. Based on the proposed transcoding algorithm, a low-cost and low-bit-rate editing system, which produces MPEG-I decodable bitstreams , can be constructed.