TH41508B - Adaptive bias of reference images in video decoding. - Google Patents

Abstract

DC60 (12/09/46) Adaptive weighing of reference image in video decoder, decoder, encoder. And the corresponding method For signal processing Video for blogging And an index of a specific reference image in image block prediction was revealed to be the utilization of adaptive biasing of the reference image to increase compression, with the decoder as well as the reference image biasing factor. For determining Biasing factor corresponding to the index of the specific reference image. The encoder includes Weight Specifier - Reference image for determining the weighing factor corresponding to the Index of specific reference images and methods for decoding, including Obtaining an index of a reference image containing information corresponding to the image block. Determination of the biasing factor for Index of obtained reference images Each reference image retrieval index for each index. Motion compensation of retrieved reference images and motion compensated reference images multiplication. With appropriate biasing factor to produce weighted motion compensated reference image. Partial biasing of the reference image in video decoder, decoder, encoder. And the corresponding method For signal processing Video for blogging And an index of a specific reference image in image block prediction was revealed to be the utilization of adaptive biasing of the reference image to increase compression, with the decoder as well as the reference image biasing factor. For determining the weighting factor corresponding to the index of the specific reference image. The encoder includes Weight Specifier - Reference image for determining the weighing factor corresponding to the Index of specific reference images and methods for decoding, including Obtaining an index of a reference image containing information that is relevant to the image block. Determination of the biasing factor for the index of each derived reference image is retrievable reference index for each index. Motion compensation of retrieved reference images and motion compensated reference images multiplication. With appropriate biasing factor to produce weighted motion compensated reference image.

Claims (7)

Disclaimer (ALL) which will not appear on the advertisement page: 1. Video decoder for video signal data for images with a certain number of image blocks. Reference Image Weighting Factor To obtain an index of at least one reference image, one index of at least one reference image index for independent indication without any use. Another index, one image of a number of references in which one stream of a number of image blocks is predicted from that. And a biasing factor from a set of biasing factors for one stream of a number of image blocks 2. Video decoder as defined in claim 1 where factor-reference image weighting There is a second output for determining determination. Offset corresponding to the index. Of the exclusive reference image 3. The video decoder, as defined in Clause 1, further includes to Variable length type decoder In signal communication with Factor Biasing - Reference pictures for arrangement An exclusive reference image to Reference weighting factor 4. The video decoder, as defined in Clause 1, further includes to Motion Compensator In signal communication with Reference Image Weighting Factor For preparing Offset reference image As a response to the factor-reference weighting, 5. The video decoder, as defined in Clause 4, further includes the multiplier in the signal communication with Motion Compensator And Biasing Factor - Reference image for applying the biasing factor to the motion-compensated reference image. 6. The video decoder, as defined in claim 4, is further added to the additive. In signal communication with motion compensators And Factors - Reference Image Weighing For applying the offset to the motion-compensated reference image 7. Video decoder, as defined in Clause 1, where the video signal data It is a stream video signal data. Containing Block conversion coefficient 8. The video decoder, as defined in claim 1, is valid for two-way predictor, which the decoder further includes: Predictive methods for formation The first and second predictors Based on two different reference images, a mean method for finding the mean. The first and second predictors are combined by using their corresponding biasing factors to form a single averaged predictor 9. Video decoder, as defined in Clause 8, where In which the two different reference images are both from the same direction relative to the Block 1 0. Method for decoding video signal information for image blocks. Method consists of Least reception One index of the reference image that contains data for the image block. Which index each The index will correspond to the specific reference image. Determination Biasing factor that is suitable for Each index of at least one Index of acceptable reference images Retrieving reference images corresponding to each index of At least one index of the derived reference image is motion-compensated for the retrieved reference image and motion-compensated reference image variation. By the appropriate biasing factor to produce a correct reference image that is compensated for a 1-weighted motion. 1.The procedures set out in Clause 10 include: To determine the offset that corresponds to Each index of At least one index of Acceptable reference image Correction of motion offset reference image with corresponding offset 1 2. The method, as defined in claim 10, further includes the addition of a weighted motion compensated reference image. Compatible with the data for the blog To predict image block 1 3.The methods set out in Clause 12 continue to include the preservation of the predicted image block as a reference for future retrieval 1. 4.The methods set out in Clause 10 include: Video signal information It is a current video signal containing block 1 conversion coefficient. 5.The method, as set out in claim 10, where two-way predictor is used, includes: First and second prediction formations from two different reference images. Movement compensation for each first and second predictor Finding the mean for finding the mean The first and second predictors together By using a factor-its implicit biasing to form a single-mean prediction 1 6.The procedures set out in Clause 15 include: Determination of the first and second offset corresponding to each of the first and second predictors and the addition of the first and second to the first and second, respectively, 1. 7.The method as set out in Claim 15, where two different reference images. They both come from the same direction relative to the block.