Title:
画像復号化装置
Document Type and Number:
Japanese Patent JP3576402
Kind Code:
B2
Abstract:
A lateral directional difference calculating unit 21 calculates a change degree between pixel levels of pixels adjacent to each other through a boundary of a decoded block and a block adjacent to the decoded block in a lateral direction and calculates a change degree between pixel levels of pixels placed in the block adjacent to the decoded block in the lateral direction, a lateral directional continuity judging unit 23 judges the continuity between the decoded block and the block adjacent to the decoded block in the lateral direction. A longitudinal directional difference calculating unit 22 and a longitudinal directional continuity judging unit 24 are operated in the same manner, a block continuity judging unit 25 judges the continuity between the decoded block and each block adjacent to the decoded block, and an error macro-block judging unit 26 detects an error macro-block according to a judging result of the block continuity judging unit 25.
Inventors:
Yoshimi Isu
Shunichi Sekiguchi
Kotaro Asai
Fuminobu Ogawa
Shinichi Kuroda
Hirofumi Nishikawa
Etsuhisa Yamada
Shunichi Sekiguchi
Kotaro Asai
Fuminobu Ogawa
Shinichi Kuroda
Hirofumi Nishikawa
Etsuhisa Yamada
Application Number:
JP30304098A
Publication Date:
October 13, 2004
Filing Date:
October 23, 1998
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04N11/04; H04N19/00; H04N19/102; H04N19/134; H04N19/136; H04N19/137; H04N19/176; H04N19/196; H04N19/44; H04N19/50; H04N19/625; H04N19/65; H04N19/67; H04N19/89; H04N19/895; (IPC1-7): H04N7/32; H04N7/24; H04N11/04
Domestic Patent References:
| JP10023431A | ||||
| JP9116905A | ||||
| JP9027955A | ||||
| JP8079752A | ||||
| JP8251422A | ||||
| JP3046482A | ||||
| JP4180381A | ||||
| JP7154783A |
Attorney, Agent or Firm:
Hiroaki Tazawa
Konobu Kato
Konobu Kato