Title:
DYNAMIC IMAGE CODING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP3573176
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce transmission information quantity by selecting a motion vector with a minimum magnitude within a range where a coding object macro block is discriminated to be nonsignificant in the coding of a motion compensation prediction error method.
SOLUTION: A frame memory 4 stores a video signal from an input section 2 and gives a video signal 5 of a coding object macro block of a current frame to a subtractor section 13 and gives a video signal 7 of each macro block of a preceding frame to a motion compensation section 8. The motion compensation section 8 gives a video signal 12 of a macro block of a preceding frame whose motion is compensated by motion vector information 9 to a subtractor section 13. A significance/non-significance discrimination section 15 discriminates an inter-macro block difference value 14 from the subtractor section 13 based on a threshold level to give a macro block significance signal 21 to a coding engine section. A motion vector generating section 11 generates motion vector information 9 whose picture element is increased by a prescribed number so as to increase the magnitude sequentially while being started from a zero vector (0,0).
Inventors:
Miyaji Satoshi
Shuichi Matsumoto
Shuichi Matsumoto
Application Number:
JP34707395A
Publication Date:
October 06, 2004
Filing Date:
December 15, 1995
Export Citation:
Assignee:
KDDI CORPORATION
International Classes:
H04N19/50; G06T9/00; H03M7/36; H04N19/105; H04N19/126; H04N19/132; H04N19/137; H04N19/139; H04N19/15; H04N19/176; H04N19/196; H04N19/423; H04N19/46; H04N19/463; H04N19/503; H04N19/51; H04N19/513; H04N19/517; H04N19/523; H04N19/587; H04N19/593; H04N19/61; H04N19/625; H04N19/70; H04N19/85; H04N19/91; (IPC1-7): H04N7/32; H03M7/36
Domestic Patent References:
| JP530498A | ||||
| JP1179584A |
Attorney, Agent or Firm:
Keiichi Yamamoto