摘要:
Provided is a method of interpolating an image by determining interpolation filter coefficients. A method of interpolating an image in consideration of smoothing includes differently selecting an interpolation filter based on a sub-pel-unit interpolation location and a smoothness from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels; and generating the at least one sub-pel-unit pixel value by interpolating pixel values of the integer-pel-unit pixels by using the selected interpolation filter.
摘要:
Provided is a method of interpolating an image by determining interpolation filter coefficients. A method of interpolating an image in consideration of smoothing includes differently selecting an interpolation filter based on a sub-pel-unit interpolation location and a smoothness from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels; and generating the at least one sub-pel-unit pixel value by interpolating pixel values of the integer-pel-unit pixels by using the selected interpolation filter.
摘要:
Method and apparatus for encoding video by compensating for pixel value according to pixel groups, and method and apparatus for decoding video by the same. A method and apparatus of encoding and decoding a video by compensating for a pixel value are provided, the method of encoding the video includes: encoding image data; decoding the encoded image data and generating a restored image by performing loop filtering on the decoded image data; determining a compensation value corresponding to errors between a predetermined group restored pixels in the restored image and corresponding original pixels, and a pixel group including a restored pixel to be compensated for by using the compensation value; and encoding the compensation value and transmitting the encoded compensation value and a bitstream of the encoded image data.
摘要:
Disclosed are a video encoding method and apparatus and a video decoding method and apparatus. The method of encoding video includes: producing a first predicted coding unit of a current coding unit, which is to be encoded; determining whether the current coding unit comprises a portion located outside a boundary of a current picture; and producing a second predicted coding unit is produced by changing a value of pixels of the first predicted coding unit by using the pixels of the first predicted coding unit and neighboring pixels of the pixels when the current coding unit does not include a portion located outside a boundary of the current picture. Accordingly, a residual block that is the difference between the current encoding unit and the second predicted encoding unit, can be encoded, thereby improving video prediction efficiency.
摘要:
A method of encoding a video, which performs deblocking filtering based on coding units. The method includes determining a filtering boundary on which deblocking filtering is to be performed based on at least one data unit from among coding units that are hierarchically configured according to depths indicating a number of times at least one maximum coding unit is spatially spilt, and prediction units and transformation units respectively for prediction and transformation of the coding units, determining filtering strength at the filtering boundary based on a prediction mode of a coding unit to which adjacent pixels belong based on the filtering boundary, and transformation coefficient values of pixels adjacent to the filtering boundary, and performing deblocking filtering based on the determined filtering strength.
摘要:
Provided is a method of interpolating an image by determining interpolation filter coefficients. A method of interpolating an image in consideration of smoothing includes differently selecting an interpolation filter based on a sub-pel-unit interpolation location and a smoothness from among interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels; and generating the at least one sub-pel-unit pixel value by interpolating pixel values of the integer-pel-unit pixels by using the selected interpolation filter.
摘要:
Method and apparatus for encoding video by compensating for pixel value according to pixel groups, and method and apparatus for decoding video by the same. A method and apparatus of encoding and decoding a video by compensating for a pixel value are provided, the method of encoding the video includes: encoding image data; decoding the encoded image data and generating a restored image by performing loop filtering on the decoded image data; determining a compensation value corresponding to errors between a predetermined group restored pixels in the restored image and corresponding original pixels, and a pixel group including a restored pixel to be compensated for by using the compensation value; and encoding the compensation value and transmitting the encoded compensation value and a bitstream of the encoded image data.