IP Library › Granted Patent US 7,016,544
Granted Patent B2
US 7,016,544 · App. 10/807,061 · Granted Mar 21, 2006

Digital image encoding and decoding method and digital image encoding and decoding device using the same

Assignee: Matsushita Electric Industrial Co., Ltd.
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Quick Facts
Patent No.
US 7,016,544
App. No.
10/807,061
Granted
Mar 21, 2006
Kind
B2
Abstract

A method for decoding a bitstream data obtained by encoding a target image comprises the steps of: (a) extracting from the bitstream data, coordinates point date indicating frame coordinates points of the reference image, coordinates number data indicating a number of the frame coordinates points and a compressed image signal related to a target image to be decoded; (b) selecting an image transformation parameter used for obtaining a predicted image, based on the extracted coordinates number data; (c) obtaining the predicted image from the reference picture, based on the selected image transformation parameter and the extracted coordinate point data; (d) obtaining a decompressed differential image by decoding the compressed image signal; and (e) reproducing a reproduced image by summing the predicted image and the decompressed differential image.

Claims (6)

1. A predicted decoding method for decoding a bitstream data obtained by encoding a target image to be encoded referring to a reference image, the predicted decoding method comprising:

(a) extracting from the bitstream data, coordinates point data indicating frame coordinates points of the reference image, coordinates number data indicating a number of the frame coordinates points and a compressed image signal related to a target image to be decoded;

(b) selecting an image transformation parameter used for obtaining a predicted image, based on the extracted coordinates number data;

(c) obtaining the predicted image from the reference picture, based on the selected image transformation parameter and the extracted coordinate point data;

(d) obtaining a decompressed differential image by decoding the compressed image signal; and

(e) reproducing a reproduced image by summing the predicted image and the decompressed differential image.

Priority Claims (2)
JP 8-008108 · Jan 22, 1996 · national
JP 8-129516 · May 24, 1996 · national
Continuity (3)
Continuation 0998892500 · Nov 19, 2001
Continuation 0911711800 · Jul 22, 1998
Related Publication 20040175050A1 · Sep 9, 2004