# US 9,438,882 B2 · Method for image prediction of multi-view video codec and computer readable recording medium therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,438,882 B2 - Document ID: US9438882B2 - Status: Granted - Kind: B2 - Application number: 14/460,945 - Filed: 2014-08-15 - Published: 2014-12-04 - Granted: 2016-09-06 - Earliest claimed: 2007-01-11 - Assignees: Korea Electronics Technology Institute - Applicants: Korea Electronics Technology Institute - Inventors: Ji-Ho Park; Byeong-Ho Choi; Yong-Hwan Kim; Je-Woo Kim; Hwa-Seon Shin; Yo-Sung Ho - Web page: https://patentgrep.com/patent/US9438882B2 ## CPC - H04N 13/161: Encoding, multiplexing or demultiplexing different image signal components (for multi-view video sequence encoding H04N19/597) - H04N 19/105: Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction - H04N 19/176: the region being a block, e.g. a macroblock - H04N 19/50: using predictive coding (H04N19/61 takes precedence) - H04N 19/597: specially adapted for multi-view video sequence encoding - H04N 19/61: in combination with predictive coding - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Provided are a method for image prediction of a multi-view video codec capable of improving coding efficiency, and a computer readable recording medium therefor. The method for image prediction of a multi-view video codec includes partitioning an image to a plurality of base blocks, acquiring information of reference images which are temporally different, acquiring information of reference images which have different views, and predicting a target block based on the acquired information. Accordingly, an image that is most similar to an image of a view to be currently compressed is generated using multiple images of different views, so that coding efficiency can be improved. ## Claims ### Claim 1 A method for image prediction of a multi-view video codec, which encodes multi-view images comprising a base-view image and at least one different-view image which is captured from a different viewpoint from a viewpoint capturing the base-view image, the base-view image and the different-view image being captured at a same time, the method comprising: partitioning the base-view image into a plurality of base blocks; predicting a base block among the base blocks based on the different-view image and a different-time image Which is captured at a time different from a time when the base-view image is captured, the base-view image and the different-time image being captured from a same viewpoint; acquiring a difference between a prediction result of the base block and the base block, and encoding the difference; and generating a bitstream comprising the encoded difference, wherein the predicting the base block comprises using at least one of a first residual adjusted using a second residual and the second residual adjusted using the first residual, and wherein the first residual is a difference between the base-view image and the different-time image, and the second residual is a difference between the base-view image and the different-view image. ### Claim 2 (depends on 1) The method of claim 1, wherein information about the first residual and the second residual is contained in a macroblock layer or a higher layer than the macroblock layer. ### Claim 3 (depends on 2) The method of claim 2, wherein the higher layer than the macroblock layer is a slice header extension (SHE), a picture parameter set extension (PPSE), or a sequence parameter set extension (SPSE). ### Claim 4 (depends on 1) The method of claim 1, wherein the adjusted first residual is a result of adding the second residual to the first residual or subtracting the second residual from the first residual, and the adjusted second residual is a result of adding the first residual to the second residual or subtracting the first residual from the second residual. ### Claim 5 (depends on 1) The method of claim 1, wherein the predicting the base block based on the different-view image comprises performing weighted prediction by applying a weighting value to at least one of the base-view image and the different-view image. ### Claim 6 (depends on 5) The method of claim 5, wherein the generating the bitstream comprises including the weighting value in the bitstream. ### Claim 7 (depends on 5) The method of claim 5, wherein in the predicting the base block, a same weighting value is applied to both the base-view image and the different-view image. ### Claim 8 (depends on 5) The method of claim 5, wherein in the predicting the base block, different weighting values are applied to the base-view image and the different-view image, respectively. ### Claim 9 (depends on 5) The method of claim 5, wherein the generating the bitstream comprises including information about the weighted prediction in the bitstream. ### Claim 10 (depends on 1) The method of claim 1, wherein the different-time image is an image which is the most similar to the base-view image among a plurality of different-time images with respect to the base-view image, and the different-view image is an image which is the most-similar to the base-view image among a plurality of different-view images with respect to the base-view image. ### Claim 11 A non-transitory computer-readable recording medium storing a program for executing a method for image prediction of a multi-view video codec, which encodes multi-view images comprising a base-view image and at least one different-view image which is captured from a different viewpoint from a viewpoint capturing the base-view image, the base-view image and the different-view image being captured at a same time, the method comprising: partitioning the base view image into a plurality of base blocks; predicting a base block among the base blocks based on the different-view image and a different-time image which is captured at a time different from a time when the base view image is captured, the base view image and the different-time image being captured from a same viewpoint; acquiring a difference between a prediction result of the base block and the base block, and encoding the difference; and generating a bitstream comprising the encoded difference, wherein the predicting the base block comprises using at least one of a first residual adjusted using a second residual and a second residual adjusted using the first residual, and wherein the first residual is a difference between the base-view image and the different-time image, and the second residual is a difference between the base-view image and the different-view image. ### Claim 12 A method for image prediction of a multi-view video codec, which encodes multi-view images comprising a base-view image and at least one different-view image which is captured from a different viewpoint from a viewpoint capturing the base-view image, the base-view image and the different-view image being captured at a same time, the method comprising: partitioning the base-view image into a plurality of base blocks; predicting a base block among the base blocks based on the different-view image or a different-time image which is captured at a time different from a time when the base-view image is captured, the base-view image and the different-time image being captured from a same viewpoint; acquiring a difference between a prediction result of the base block and the base block, and encoding the difference; and generating a bitstream comprising the encoded difference, wherein in case where the base block is predicted by using the different-view image, the predicting the base block comprises performing weighted prediction by applying at least one weighting value to the base-view image and the different-view image. ### Claim 13 (depends on 12) The method of claim 12, wherein the generating the bitstream comprises including the weighting value in the bitstream. ### Claim 14 (depends on 12) The method of claim 12, wherein in case where the base block is predicted by using the different-view image, a same weighting value is applied to both the base-view image and the different-view image. ### Claim 15 (depends on 12) The method of claim 12, wherein in case where the base block is predicted by using the different-view image, different weighting values are applied to the base-view image and the different-view image, respectively. ### Claim 16 (depends on 12) The method of claim 12, wherein in case where the base block is predicted by using the different-view image, the generating the bitstream comprises of including information about the weighted prediction in the bitstream. ### Claim 17 (depends on 12) The method of claim 12, wherein the different-time image is an image which is the most similar to the base-view image among a plurality of different-time images with respect to the base-view image, and the different-view image is an image which is the most-similar to the base-view image among a plurality of different-view images with respect to the base-view image.