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Registered METHOD AND DEVICE FOR GENERATING A PREDICTION BLOCK TO ENCODE AND DECODE AN IMAGE
- Inventors
- Kim Hui Yong, Jinho Lee, Sung-Chang Lim, Choi Jin Soo, Jin Woong Kim
- Application No.
- 15151125 (2016.05.10)
- Publication No.
- 20160255363 (2016.09.01)
- Registration No.
- 9621913 (2017.04.11)
- Country
- UNITED STATES
- Project Code
- 11PR1700, Development of Multiview 3D Compatible UHDTV Broadcasting Technology, Jin Woong Kim
- Abstract
- A method for decoding an image according to the present invention comprises the steps of: restoring a residual block by performing inverse quantization and inverse transformation for the entropy-decoded residual block; generating a prediction block by performing intra prediction for a current block; and restoring an image by adding the restored residual block to the prediction block, wherein the step of generating the prediction block further comprises a step for generating a final prediction value of a pixel to be predicted, on the basis of a first prediction value of the pixel to be predicted, which is included in the current block, and of a final correction value that is calculated by performing an arithmetic right shift by a binary digit 1 for a two's complement integer representation with respect to an initial correction value of the pixel to be predicted. Thus, the operational complexity during image encoding/decoding can be reduced.
- KSP Keywords
- Image Encoding, Intra prediction, Inverse transformation, inverse quantization
- Family