Title:
ENCODER/DECODER AND ENCODING/DECODING METHOD
Document Type and Number:
Japanese Patent JP3196608
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To eliminate information loss and to improve encoding/decoding efficiency by comparing a predictive value and an encoding object picture element and encoding the comparison result based on context.
SOLUTION: An encoding control means 4 allowes an encoding image storage means 1 to store encoding object picture elements and output the reference picture elements in the vicinity or in the neighborhood. Next, the control means 4 outputs the binary signal of the encoding object picture element inputted in the same way from the predictive value predicted based on the reference picture element outputted from the storage means 1 of an adaptive predictive conversion means 2. A conversion means 2 allowes a context generation means 2b to start the conversion into context and the output of context. At this stage, the binary signal informs the control means 4 that the means 2a and the generation means 2b output the pair of context based on the matching or the mismatching of the comparison result of the predictive value and the encoding object picture element. As a result, the control means 4 makes an entropy encoding means 3 perform an encoding and output the picture element. For the encoding of an picture element, the encoding is repeated till a comparison means shows the matching.
Inventors:
Tomohiro Kimura
Ikuro Ueno
Yanagiya Taichi
Masayuki Yoshida
Fumitaka Ono
Naoto Tabe
Ikuro Ueno
Yanagiya Taichi
Masayuki Yoshida
Fumitaka Ono
Naoto Tabe
Application Number:
JP29132995A
Publication Date:
August 06, 2001
Filing Date:
November 09, 1995
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G06T9/00; H03M7/36; H04N1/41; H04N19/102; H04N19/103; H04N19/134; H04N19/136; H04N19/137; H04N19/182; H04N19/189; H04N19/192; H04N19/196; H04N19/423; H04N19/426; H04N19/50; H04N19/85; H04N19/91; (IPC1-7): H04N7/32; H04N1/41
Domestic Patent References:
| JP7154607A | ||||
| JP7154606A | ||||
| JP59143485A | ||||
| JP6164940A | ||||
| JP479690A |
Other References:
Ｄａｔａ Ｃｏｍｐｒｅｓｓｉｏｎ Ｃｏｎｆｅｒｅｎｃｅ，ＤＣＣ９２ ｐ．１７２−１８０（１９９２．３）（Ｏｎ ｔｈｅ ＪＰＥＧ ｍｏｄｅｌ ｆｏｒ ｌｏｓｓｌｅｓｓ ｉｍａｇｅ ｃｏｍｐｒｅｓｓｉｏｎ）
Ｄａｔａ Ｃｏｍｐｒｅｓｓｉｏｎ Ｃｏｎｆｅｒｅｎｃｅ，ＤＣＣ９３ ｐ．３５１−３６０（１９９２．３）（Ｆａｓｔ ａｎｄ ｅｆｆｉｃｉｅｎｔ ｌｏｓｓｌｅｓｓ ｉｍａｇｅ ｃｏｍｐｒｅｓｓｉｏｎ）
Ｄａｔａ Ｃｏｍｐｒｅｓｓｉｏｎ Ｃｏｎｆｅｒｅｎｃｅ，ＤＣＣ９３ ｐ．３５１−３６０（１９９２．３）（Ｆａｓｔ ａｎｄ ｅｆｆｉｃｉｅｎｔ ｌｏｓｓｌｅｓｓ ｉｍａｇｅ ｃｏｍｐｒｅｓｓｉｏｎ）
Attorney, Agent or Firm:
Kaneo Miyata (1 person outside)