Apparatus and method for deblocking filtering image data and video decoding apparatus and method using the same
AssigneesSamsung Electronics Co., Ltd., Kwangwoon University Industry-Academic Collaboration Foundation
InventorsWoong-Il CHOI, Dae-Sung CHO, Jung-Hak NAM, Dong-Gyu SIM, Hyun-Ho JO
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Abstract
A deblocking filtering apparatus and method for removing block distortion of a decoded image, and a video decoding apparatus and method using the same. The deblocking filtering method includes extracting parameter information for a plurality of unit blocks in a macro block, from a header of an input current frame, determining whether to perform deblocking filtering, based on the extracted parameter information, and performing deblocking filtering on the macro block according to the determination result.
Claims20
A deblocking filtering apparatus for removing block distortion of image data, comprising:
- a parameter extractor which extracts parameter information for a plurality of unit blocks in a macro block, from a header of an input current frame;
- a decision unit which determines whether to perform deblocking filtering, based on the extracted parameter information;
- and
- a filter which is operable to perform deblocking filtering on the macro block according to a determination result of the decision unit.
A deblocking filtering method for removing block distortion of image data, comprising:
- extracting parameter information for a plurality of unit blocks in a macro block, from a header of an input current frame;
- determining whether to perform deblocking filtering, based on the extracted parameter information;
- and
- performing deblocking filtering on the macro block according to the determining.
A decoding apparatus for decoding image data, the decoding apparatus comprising:
- an entropy decoder which restores a residual image of an input frame;
- a dequantizer;
- an Inverse Discrete Cosine Transform (IDCT) unit;
- an inter and intra predictor which generates a predicted picture of an input current frame;
- and
- a deblocking filter which extracts parameter information indicating execution or non-execution of entropy coding, from a header of the input current frame, and optionally performs deblocking filtering on a restored image, restored using the predicted picture of the input current frame, according to the extracted parameter information.
Dependencies are inferred from the claim text.