Patent application number | Description | Published |
20120207211 | IMAGE ENCODING AND DECODING APPARATUS AND METHOD - The present disclosure provides a video encoding/decoding apparatus and method. According to one embodiment, the video encoding and decoding apparatus includes: an image encoder for reducing horizontal and vertical sizes of a variable macro block into a set size or by a set ratio with the variable macro block reset in a smaller size than the current size, if the variable macro block for the current encoding is not inside an input image, and predictive encoding based on the reset variable macro block; and an image decoder for decoding by reducing the size of the variable macro block for the current decoding into the set size or by set ratio with the variable macro block reset in a smaller size than the current size, if the variable macro block of the current decoding target is not inside an input image. | 08-16-2012 |
20120269274 | METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO USING SPLIT LAYER - The present invention relates to a method and an apparatus for encoding/decoding a video using a split layer. The video encoding/decoding method generates an encoded image data by encoding a current block partitioned into a plurality of subblocks, generates an encoded partition information data by encoding partition information of the current block, generates a bitstream including the encoded image data and the encoded partition information data, and then reconstructs the video image from the generated bitstream. According to the present disclosure, when encoding a high resolution video with variable sized blocks, various block shapes may be used for the encoding, and efficient encoding and decoding of the block partition information can improve the compression efficiency. | 10-25-2012 |
20130039415 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING VARIABLE-SIZE MACROBLOCKS - A video encoding apparatus includes a candidate block type configuration unit for configuring block type candidates for encoding an image by using variable sized macroblocks; a video encoder for encoding an input image for each block type candidate; and a block type determiner for determining a block type based on encoding costs by the block type candidate, and generating a bitstream including image data encoded by the determined block type and information for the determined block type. Determining the block type to match the image characteristics enables combinations of diverse modes such as a large block and macroblock size, a minimum subblock size, available divisional block type, prediction mode type within a macroblock, and so on to achieve more effective encoding and decoding of high resolution images. | 02-14-2013 |
20130136179 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING VARIABLE-SIZE MACROBLOCKS - The video encoding/decoding apparatus includes a video encoder for encoding macroblocks by each of prediction basic unit candidates, determining prediction basic units based on encoding costs for each of the prediction basic unit candidates, and generating a bitstream including image data encoded in determined prediction basic units, information on a prediction type for each of the determined prediction basic units, and prediction data depending on the prediction type; and a video decoder for extracting information on the prediction type for each of the prediction basic units, prediction data depending on the prediction type, and encoded image data from the bitstream, and generating a reconstructed image by decoding the encoded image data depending on the prediction type for each of the prediction basic units. | 05-30-2013 |
20130315299 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING VARIABLE SIZED MACROBLOCKS - A video encoding apparatus includes a candidate block type configuration unit for configuring block type candidates for encoding an image by using variable sized macroblocks; a video encoder for encoding an input image for each block type candidate; and a block type determiner for determining a block type based on encoding costs by the block type candidate, and generating a bitstream including image data encoded by the determined block type and information for the determined block type. Determining the block type to match the image characteristics enables combinations of diverse modes such as a large block and macroblock size, a minimum subblock size, available divisional block type, prediction mode type within a macroblock, and so on to achieve more effective encoding and decoding of high resolution images. | 11-28-2013 |
20140286392 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY USING ADAPTIVE LOOP FILTER ON FREQUENCY DOMAIN USING CONVERSION - A video encoding method for reducing encoding error by using a loop filter is provided, the method including: generating a reconstructed image from encoded data of an original image; determining one or more regions on which the loop filter is applied in the reconstructed image; transforming the original image and the reconstructed image which correspond to each region of the determined one or more regions from a spatial domain into a frequency domain; determining loop filter coefficients for said each region by comparing the transformed original image and the transformed reconstructed image; loop-filtering the reconstructed image based on the loop filter coefficients for said each region; and encoding information on the loop filter coefficients for said each region. | 09-25-2014 |
20140328403 | IMAGE ENCODING/DECODING METHOD AND APPARATUS USING WEIGHT PREDICTION - A method for decoding video images includes: determining a coding block, from a bitstream, which is divided in a quadtree structure from a largest coding block; decoding, from the bitstream, motion information on one or more prediction blocks divided from the coding block; predicting the prediction blocks based on the motion information; reconstructing a residual block from the bitstream; and reconstructing the coding block by adding the predicted prediction blocks and the reconstructed residual block. The predicting of the prediction blocks includes: generating first predicted pixels within each of the prediction blocks by using the motion information; decoding, from the bitstream, a weighted prediction parameter applicable to each of the prediction blocks; and generating second predicted pixels within each of the prediction blocks by applying the weighted prediction parameter to the first predicted pixels within each of the prediction blocks. | 11-06-2014 |
20150016526 | IMAGE ENCODING/DECODING METHOD AND DEVICE - The present disclosure relates to a video encoding/decoding apparatus and method, in which skip information indicating whether a block is a skip block is encoded, partition information of the block and skip motion information of the block are encoded or prediction information of the block containing the partition information of the block and intra prediction mode information or motion information are encoded according to the skip information, residual signal information of the block is predictive-encoded based on the prediction information and the transform information, and an encoded signal is reconstructed. The method and the apparatus can improve the video compression efficiency by efficiently encoding the encoding information used for the video encoding and selectively using various encoding methods and decoding methods in encoding the video. | 01-15-2015 |