Image encoding device, image decoding device, image encoding method, and image decoding method

Patent metadata

Field	Value
Publication number	US-8948243-B2
Application number	US-201113638095-A
Country	US
Kind code	B2
Filing date	Mar 7, 2011
Priority date	Mar 31, 2010
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

Disclosed is an image encoding device which is constructed in such a way as to include an encoding mode determining unit 4 for evaluating the degree of efficiency of encoding of a difference image A which is the difference between an image of a macroblock to be encoded, and a prediction image A generated by a motion-compensated prediction unit 2 in a motion prediction mode A, and also evaluating the degree of efficiency of encoding of a difference image B which is the difference between the image of the macroblock to be encoded, and a prediction image B generated by the motion-compensated prediction unit 2 in a motion prediction mode B, and for selecting a difference image having a higher degree of encoding efficiency.

First claim

The invention claimed is:

1. An image encoding device which carries out compression encoding on each predetermined block of an inputted image by using a motion-compensated prediction, said image encoding device comprising:
a motion detecting unit for detecting a motion vector of said block;
a first prediction image generating unit for generating a first prediction image by using the motion vector detected by said motion detecting unit;
a memory for holding a motion vector dete…

Assignees

• Sekiguchi Shunichi
• Itani Yusuke
• Sugimoto Kazuo
• Yamada Yoshihisa
• Mitsubishi Electric Corp

Inventors

• Sekiguchi Shunichi
• Itani Yusuke
• Sugimoto Kazuo
• Yamada Yoshihisa

Classifications

• H04N19/00896

  Electricity · mapped topic

• H04N19/00175

  Electricity · mapped topic

• H04N19/00266

  Electricity · mapped topic

• H04N19/00127 Primary

  Electricity · mapped topic

• H04N19/00781

  Electricity · mapped topic