Image encoding/decoding method using prediction block and apparatus for same
AssigneeElectronics and Telecommunications Research Institute
InventorsJin Ho Lee, Hui Yong Kim, Sung Chang Lim, Jin Soo Choi, Jin Woong Kim
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Abstract
According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved.
Claims6
A video decoding method comprising:
- determining an intra prediction edge filtering strength;
- determining an intra prediction edge filtering region between a vertical edge pixel line and a horizontal edge pixel line based on an intra prediction mode of a current block;
- filtering the intra prediction edge filtering region based on the intra prediction edge filtering strength to generate an intra prediction block of the current block;
- and
- generating a reconstructed block based on the intra prediction block and a reconstructed residual block corresponding to the current block,
- wherein the vertical edge pixel line is determined as the intra prediction edge filtering region, if the intra prediction mode of the current block is a first intra prediction mode indicating that each pixel of the current block is predicted from an above-right reference pixel, and
- the horizontal edge pixel line is determined as the intra prediction edge filtering region, if the intra prediction mode of the current block is a second intra prediction mode indicating that each pixel of the current block is predicted from a below-left reference pixel.
A video decoding apparatus comprising:
- a prediction block generating unit configured for determining an intra prediction edge filtering strength, determining an intra prediction edge filtering region between a vertical edge pixel line and a horizontal edge pixel line based on an intra prediction mode of a current block, and filtering the intra prediction edge filtering region based on the intra prediction edge filtering strength to generate an intra prediction block of the current block;
- and
- a reconstructed block generating unit configured for generating a reconstructed block based on the intra prediction block and a reconstructed residual block corresponding to the current block,
- wherein the vertical edge pixel line is determined as the intra prediction edge filtering region, if the intra prediction mode of the current block is a first intra prediction mode indicating that each pixel of the current block is predicted from an above-right reference pixel, and
- the horizontal edge pixel line is determined as the intra prediction edge filtering region, if the intra prediction mode of the current block is a second intra prediction mode indicating that each pixel of the current block is predicted from a below-left reference pixel.
Dependencies are inferred from the claim text.