US 20040071354A1
(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2004/0071354 Al
Adachi et al. (43) Pub. Date: Apr. 15,2004
(54) VIDEO ENCODING METHOD, VIDEO
DECODING METHOD, VIDEO ENCODING
APPARATUS, VIDEO DECODING
APPARATUS, VIDEO ENCODING
PROGRAM, AND VIDEO DECODING
PROGRAM
(75) Inventors: Satoru Adachi, Yokohama-shi (JP);
Choong Seng Boon, Yokohama-shi
(JP); Sadaatsu Kato, Yokosuka-shi
(JP); Minoru Etoh, Yokohama-shi (JP);
Thiow Keng Tan, Jalan Sindor (SG)
Correspondence Address:
OBLON, SPIVAK, MCCLELLAND, MAIER &
NEUSTADT, PC.
1940 DUKE STREET
ALEXANDRIA, VA 22314 (US)
(73) Assignee: NTT DoCoMo, Inc., Tokyo (JP)
(21) Appl. No.: 10/658,190
(22) Filed: Sep. 10, 2003
(30) Foreign Application Priority Data
Oct. 11, 2002 (JP) 2002-299512
Jul. 2, 2003 (JP) 2003-190567
Publication Classification
(51) Int. CI.7 G06K 9/36
(52) U.S. C I 382/236
(57) ABSTRACT
A video processing system 100 is provided with video encoding device 10 and video decoding device 20. The video encoding device 10 implements backward interframe prediction from a temporally subsequent frame and outputs information indicating that an option to eliminate use of a decoded image of the temporally subsequent frame was chosen. The video decoding device 20 eliminates use of the decoded image of the frame on the basis of this information, in conjunction with input of the information for eliminating use of the decoded image of the temporally subsequent frame.
