Patent application number | Description | Published |
20090161759 | METHOD AND APPARATUS FOR VIDEO CODING ON PIXEL-WISE PREDICTION - Provided is a video encoding and decoding method and apparatus using pixel-based prediction. A pixel-based video encoding apparatus includes a block prediction unit, a residual image generation unit, a pixel prediction unit, and an entropy-coding unit. The block prediction unit performs temporal or spatial prediction between a reference image and a current image in order to generate a prediction block corresponding to a current block to be encoded. The residual image generation unit generates a residual image block composed of a residual signal corresponding to a difference between pixels of the prediction block and pixels of the current block. The pixel prediction unit determines whether to apply differential pulse coded modulation (DPCM) to each of pixels of the residual image block based on a rate distortion optimization (RDO) value calculated for the case where DPCM is applied to each of the pixels of the residual image block and a RDO value calculated for the case where DPCM is not applied to each of the pixels of the residual image block. The entropy-coding unit performs entropy-coding on the residual image block. | 06-25-2009 |
20100046625 | APPARATUS AND METHOD FOR VIDEO ENCODING AND DECODING - A method and apparatus for encoding an image based on a video sensor structure are provided. The method includes acquiring an image to be encoded; separating the acquired image into respective color components; creating a predicted image for each of the color components, and creating a residual image between the predicted image and the acquired image; and performing transform encoding on each of the color components individually by applying the residual image to a transformation formula. | 02-25-2010 |
20110032990 | APPARATUS AND METHOD FOR DEBLOCKING FILTERING IMAGE DATA AND VIDEO DECODING APPARATUS AND METHOD USING THE SAME - 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. | 02-10-2011 |
20110211642 | MOVING PICTURE ENCODING/DECODING APPARATUS AND METHOD FOR PROCESSING OF MOVING PICTURE DIVIDED IN UNITS OF SLICES - A moving picture encoding/decoding apparatus and method for processing a moving picture, which is divided in units of slices are provided. The encoding method includes: dividing a moving picture in units of slices when the moving picture is received; determining an encoding order of moving pictures divided in units of slices; and generating a bitstream by encoding moving pictures, which are divided in units of slices, according to a corresponding order when the encoding order had been determined. | 09-01-2011 |
20120033728 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGES BY ADAPTIVELY USING AN INTERPOLATION FILTER - The present invention relates to a method and to an apparatus for encoding and decoding images by adaptively using an interpolation filter in consideration of the characteristics of input images. The apparatus of the present invention comprises a prediction block-generating unit including a selector for adaptively selecting an interpolation filter for generating a prediction block in consideration of the context information of an input image block, a filter bank in which groups of interpolation filters are stored in correspondence with the context information, and a specific interpolation filter which is selected from the filter bank in accordance with the control of the selector, and which interpolates a reference image block associated with the input image block. | 02-09-2012 |
20130107949 | SCALABLE VIDEO CODING METHOD AND APPARATUS USING INTRA PREDICTION MODE | 05-02-2013 |
20130107962 | SCALABLE VIDEO CODING METHOD AND APPARATUS USING INTER PREDICTION MODE | 05-02-2013 |
20140119440 | METHOD FOR CODING AND DECODING SCALABLE VIDEO AND APPARATUS USING SAME - The present invention relates to a method and an apparatus for interlayer intra-prediction, and the method for interlayer intra-prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied. | 05-01-2014 |
20140119441 | METHOD FOR CODING AND DECODING SCALABLE VIDEO AND APPARATUS USING SAME - The present invention relates to a method and an apparatus for interlayer prediction, and the method for interlayer prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied, wherein the reference layer information can be encoding information of a reference block, which corresponds to a current block of the enhancement layer, from the reference layer, and residual information. | 05-01-2014 |
20140161177 | METHODS AND APPARATUSES FOR ENCODING AND DECODING ADAPTIVE QUANTIZATION PARAMETER BASED ON QUADTREE STRUCTURE - The present invention relates to a method and apparatus for encoding/decoding an image, and to a method and apparatus for recording a quantization parameter differential value based on a quadtree segmentation in a largest coding unit (LCU), and adaptively predicting a quantization parameter value based on context information of a neighboring coding unit (CU). The method and apparatus for encoding/decoding a quantization parameter based on a quadtree structure may effectively present block information having a quantization parameter differential value based on segmentation information of a CU, and may perform an adaptive prediction of a quantization parameter value using the context information of the neighboring CU such as a block size, block segmentation, quantization parameter value, and the like. | 06-12-2014 |