Patent application number | Description | Published |
20090279797 | ENTROPY ENCODING AND DECODING METHOD AND APPARATUS USING LEAST SIGNIFICANT BIT - Provided are entropy encoding and decoding methods. The entropy encoding method includes receiving residual coefficients obtained by frequency converting a residual image, determining a first bit string about residual coefficients having nonzero levels from among the received residual coefficients, determining at least one lower bit, including a least significant bit of the first bit string, from the first bit string, and determining a second bit string obtained by bit-shifting the first bit string to the right by the number of lower bits. | 11-12-2009 |
20090279803 | METHOD AND APPARATUS FOR CONVERTING BIT-PLANE IMAGE, AND METHOD AND APPARATUS FOR INVERSE-CONVERTING BIT-PLANE IMAGE - Provided are methods and apparatuses for converting a lower bit-plane image, and methods and apparatuses for inverse-converting the lower bit-plane image, which increase the correlation of the lower bit-plane image. According to the method of converting a lower bit-plane image, pixels of the lower bit-plane image are sequentially added or subtracted so as to generate a converted lower bit-plane image. Accordingly, the lower bit-plane image has higher regularity, and thus the efficiency of image processing using the lower bit-plane image is improved. | 11-12-2009 |
20090285497 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS USING LEAST SIGNIFICANT BITS - Provided are an image processing method and image processing apparatus using least significant bits (LSBs). The image processing method includes generating first binary codes by converting pixel values of an input image into a binary code format; converting the first binary codes into gray codes and determining a predetermined number of sequential LSBs from among the gray codes; and generating second binary codes by converting the determined LSBs of the gray codes into the binary code format. | 11-19-2009 |
20100002943 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING IMAGE SEPARATION BASED ON BIT LOCATION - Provided are method and apparatus for encoding and decoding an image by using a bit plane-based image encoding method and a block-based image encoding method respectively on bit planes based on the n-m most significant bits of an input image including n-bit pixel values and an image based on the m least significant bits of the input image. | 01-07-2010 |
20100054615 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY USING ADAPTIVE BINARIZATION - A method and apparatus for encoding/decoding an image, wherein the method includes selecting a predetermined binarization table from a plurality of binarization tables based on prediction values of a current pixel and binarizing or inversely binarizing residual values by using the selected binarization table. | 03-04-2010 |
20110038419 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY CONTROLLING ACCURACY OF MOTION VECTOR - Disclosed are a method and apparatus for encoding an image whereby a current coding unit is predicted by variably controlling accuracy of a motion vector and motion compensation is performed according to the result of prediction, and a method and apparatus for decoding an image encoded by the method and apparatus for encoding an image. | 02-17-2011 |
20110044551 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING FLEXIBLE ORTHOGONAL TRANSFORM - A method and apparatus for encoding an image by freely combining a plurality of prediction schemes and a plurality of orthogonal transform schemes based on grouping and matching of the plurality of prediction schemes and the plurality of orthogonal transform schemes is provided. | 02-24-2011 |
20140341283 | METHOD AND APPARATUS FOR ENCODING VIDEO AND METHOD AND APPARATUS FOR DECODING VIDEO CHANGING SCANNING ORDER DEPENDING ON HIERARCHICAL CODING UNIT - A method and apparatus for encoding a video and a method and apparatus for decoding a video which change a scanning order according to hierarchical coding units. | 11-20-2014 |
20140355690 | METHOD AND APPARATUS FOR ENTROPY-ENCODING CAPABLE OF PARALLEL PROCESSING, AND METHOD AND APPARATUS FOR ENTROPY-DECODING CAPABLE OF PARALLEL PROCESSING - Provided is a method of performing parallel entropy encoding and parallel entropy decoding by using a plurality of processors. The method includes: sequentially performing entropy encoding on a first row of blocks from among blocks that each have a predetermined size and are obtained by splitting and encoding an image, determining initial entropy coding probability information of a foremost block of a second row of blocks as entropy coding probability information updated by a block of a fixed position of the first row of blocks, sequentially performing entropy encoding on blocks of the second row of blocks which are serially arranged based on the initial entropy coding probability information, and after the entropy encoding is completed to a last block of the first row of blocks, initializing internal state information of an entropy encoded bit string of the first row of blocks. | 12-04-2014 |
Patent application number | Description | Published |
20080240590 | METHODS AND APPARATUSES FOR ENCODING AND DECODING MULTI-VIEW IMAGE - Methods and apparatuses for encoding and decoding a multi-view image are provided. The method of encoding the multi-view image can use a difference in views between pictures of the multi-view image, add an image area obtained from a picture at one view at a first time to a picture at another view at a second time, thereby generating a reference picture, and perform prediction encoding using the generated reference picture, thereby increasing prediction encoding efficiency. | 10-02-2008 |
20080253671 | METHOD AND APPARATUS FOR ENCODING AND DECODING MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 10-16-2008 |
20080285863 | METHOD AND APPARATUS FOR ENCODING AND DECODING MULTI-VIEW IMAGE - A method and apparatus for encoding and decoding a multi-view image for a multi-view display apparatus are provided. The method of encoding a multi-view image includes: compressing a multi-view image based on a reference image relative to multiple views; generating enabled stereo pair information in relation to multi-view images; and generating a bitstream by using the compressed multi-view image and the enabled stereo pair information. | 11-20-2008 |
20080317361 | METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE BY PARTITIONING IMAGE - A method and apparatus for encoding/decoding an image are provided. The method includes partitioning an image into a plurality of areas, allocating the partitioned plurality of areas to views of multi-view image sequences, and encoding the allocated plurality of areas. By doing so, the method can efficiently encode a large-screen image or a high-pixel image, without using a separate codec. | 12-25-2008 |
20090279796 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE - Provided are a method and apparatus for encoding and decoding an image. The method of encoding an image includes generating half-tone data by applying patterns specified by each color channel to input data, rearranging the generated half-tone data according to the characteristics of the applied patterns, and predicting the rearranged half-tone data and encoding the predicted half-tone data. Therefore, encoding and decoding can be performed more efficiently and a compression rate can be improved. | 11-12-2009 |
20120114259 | METHOD AND APPARATUS FOR ENCODING AND DECODING MULTI-VIEW IMAGE - Provided is a method and apparatus for encoding and decoding a multiview image. By predicting a current picture based on at least one of an intra (I) picture of a previous image processing block and an I picture of a current image processing block, which is generated for a different view than a view at which the I picture of the previous image processing block is generated, and encoding the current picture based on the prediction, it is possible to prevent display quality degradation that may occur in images at views other than a base view. | 05-10-2012 |
20120148166 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 06-14-2012 |
20120148167 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 06-14-2012 |
20120148168 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 06-14-2012 |
20120148169 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 06-14-2012 |
20120148170 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 06-14-2012 |
20120155782 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A Method and apparatus for encoding and decoding a multi-view image are provided. The method of encoding a multi-view image includes determining whether each of pictures included in multi-view image sequences is a reference picture referred to by other pictures included in the multi-view image sequences for inter-view prediction, and encoding the pictures using at least one of inter-view prediction and temporal prediction based on the determination result, thereby efficiently encoding and decoding the multi-view image at high speed. | 06-21-2012 |
20120201474 | METHOD AND APPARATUS FOR ENCODING AND DECODING MULTI-VIEW IMAGES BASED ON GLOBAL DISPARITY VECTOR - A method and apparatus for encoding and decoding multi-view images. The multi-view image encoding method selects a block corresponding to a current block from another picture having a view-point which is different from a view-point of a current picture to which the current block belongs, on the basis of a global disparity vector representing a global disparity between the current picture and the other picture; and encodes the current block on the basis of block information of a block from among the selected block and blocks adjacent to the selected block. Accordingly, multi-view images can be encoded in consideration of the individual differences between the appearances of objects as well as global disparities between view-points. | 08-09-2012 |
20140132719 | METHOD AND APPARATUS FOR ENCODING AND DECODING AND MULTI-VIEW IMAGE - A method of predictive-decoding a multi-view image includes receiving a bitstream comprising information indicating whether each of pictures included in multi-view image sequences is a reference picture referred to by others of the pictures included in the multi-view image sequences for inter-view prediction and data about the multi-view image sequences; extracting the information indicating whether each of pictures included in multi-view image sequences is the reference picture and the data about the multi-view image sequences from the received bitstream; determining whether pictures included in the data about the multi-view image sequences are to be used for inter-view prediction decoding based on the extracted information indicating whether each of pictures included in multi-view image sequences is the reference picture; and performing predictive-encoding based on a result of the determination, wherein the information indicating whether each of pictures included in multi-view image sequences is the reference picture is included in a parameter for each of the pictures. | 05-15-2014 |