Coding and decoding method and apparatus using plural scanning patterns
AssigneeSamsung Electronics Co., Ltd.
InventorsByeung-woo JEON, Yong-je KIM, Jeong-hoon PARK
Life of this patent
Estimating the term…
Abstract
Provided is a coding and decoding method and apparatus using a plurality of scanning patterns. The method for coding image data includes: (a) obtaining N×M data by firstly source-coding the image data; (b) scanning the N×M data using a predetermined scan pattern selected from a plurality of scan patterns in response to the obtained N×M data; and (c) firstly source-coding the scanned data. Accordingly, coding and decoding image data having various characteristics can be implemented efficiently. Particularly, even for the image data having an interlaced scanned frame format, more efficient coding and decoding can be achieved.
Claims8
A decoding method of image data, comprising:
- (a) producing scan pattern selection information to select a scan pattern among a plurality of scan patterns;
- (b) inversely scanning the image data that is variable-length-decoded to obtain N×M data using at least one scan pattern selected on the basis of the scan pattern selection information;
- and
- (c) source-decoding the N×M data,
- wherein the scan pattern selection information is produced on the basis of a Macro block format.
A decoding apparatus of image data, comprising:
- a scan pattern selector that produces a scan pattern selection information to select a scan pattern among a plurality of scan patterns;
- an inverse scanner that inversely scanning the image data that is variable-length-decoded to obtain N×M data using at least one scan pattern selected on the basis of the scan pattern selection information;
- and
- a first decoder that source-decodes the N×M data,
- wherein the scan pattern selection information is produced on the basis of a Macro block format.
Dependencies are inferred from the claim text.