Title:
【発明の名称】動画像符号化方式および復号化方式
Document Type and Number:
Japanese Patent JP3068304
Kind Code:
B2
Abstract:
A plurality of frame image signals are successively applied to an image signal encoder. A motion region of an incoming frame image signal is extracted and then approximated in shape to a polygon. The vertices of the polygon are determined and then the coordinate values of the vertices are calculated and transmitted. Further, in the event that the incoming image signal includes a region which is required to undergo orthogonal transformation, the region are extracted and then divided into a plurality of small regions. Following, each of the divided small regions is approximated in shape to a polygon and then the vertices thereof are detected. Subsequently, the coordinate values of the vertices are calculated and then transmitted. Consequently, the data to be transmitted can effectively be reduced.
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Inventors:
Yutaka Yokoyama
Application Number:
JP800892A
Publication Date:
July 24, 2000
Filing Date:
January 21, 1992
Export Citation:
Assignee:
NEC
International Classes:
G06T9/00; H04N19/20; H04N19/423; H04N19/50; H04N19/51; H04N19/60; H04N19/85; (IPC1-7): H04N7/30; G06T9/00; H04N7/32
Domestic Patent References:
| JP220185A | ||||
| JP6166486A | ||||
| JP2202776A |
Other References:
Ｓｉｇｎａｌ Ｐｒｏｃｅｓｓｉｎｇ：Ｉｍａｇｅ Ｃｏｍｍｕｎｉｃａｔｉｏｎ，Ｖｏｌ１，Ｎｏ．２（１９８９）ｐ．１５３−１８０
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)