Method and apparatus of motion and disparity vector derivation for 3D video coding and HEVC

A disparity vector and 3D video technology, applied in the field of video coding, can solve problems affecting MV decoding, etc.

Active Publication Date: 2014-07-02
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, subsequent MV decoding can also be affected and...

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  • Method and apparatus of motion and disparity vector derivation for 3D video coding and HEVC
  • Method and apparatus of motion and disparity vector derivation for 3D video coding and HEVC
  • Method and apparatus of motion and disparity vector derivation for 3D video coding and HEVC

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Embodiment Construction

[0049] In the present invention an efficient method of deriving a disparity vector for a block from its depth data is provided. like figure 2 As shown, the method according to 3DV-ATM v.4 derives the disparity vector based on the maximum disparity value of all depth samples in the depth block corresponding to the current block. In 3DV-ATM v.4, the maximum partition size is 16x16, so the size of the associated depth block can also be 16x16. To find the maximum depth value, 256 depth samples need to be accessed and 255 comparisons performed in the associated depth block.

[0050] Embodiments according to the present invention disclose efficient methods of deriving disparity vectors. like Image 6 As shown, instead of sampling from all depths in the depth block associated with the current block, the disparity vector is derived from the maximum depth value of the four corner depth samples. Based on the above method, only 4 depth samples need to be accessed and 3 comparisons a...

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Abstract

A method and apparatus for deriving MVP (motion vector predictor) for a block for three-dimensional video coding or multi-view video coding are disclosed. Embodiments according to the present invention replace an unavailable inter-view MV of one neighboring block with a disparity vector derived from depth data of a subset of a depth block corresponding to one neighboring block. A method and apparatus for generating additional candidates for motion vector prediction associated with Merge mode or AMVP (Inter) mode for a block are disclosed. Embodiments according to the present invention generate one or more additional MVP candidates to add to the MVP list if the MVP list size is less than a given list size. The additional MVP candidates are generated either by reducing precision of an available MVP in the MVP list or by adding an offset to the available MVP in the MVP list.

Description

[0001] cross reference [0002] This application claims priority as follows: U.S. Provisional Patent Application No. 61 / 545,743, filed October 11, 2011, entitled "Method for generating additional candidates using truncation or offset"; No. 61 / 563,341, filed U.S. Provisional Patent Application, filed November 23, 2011, entitled "Method for Generating Additional Candidates Using Adaptive Offset"; Serial No. 61 / 668,424, filed July 5, 2012, entitled "Disparit y vector derivation for inter-view predictor in ATM" U.S. Provisional Patent Application. The above U.S. Provisional Patent Application is hereby incorporated by reference. technical field [0003] The present invention relates to video coding. In particular, the present invention relates to the derivation of motion / disparity vectors for three-dimensional (3D) video coding and High Efficiency Video Coding (HEVC). Background technique [0004] In order to bring better visual experience to viewers, three-dimensional (3D) ...

Claims

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Application Information

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IPC IPC(8): H04N13/00H04N19/597H04N19/52H04N19/96
CPCH04N19/00587H04N2013/0081H04N13/0048H04N19/00969H04N13/0022H04N19/00769H04N19/00696H04N19/597H04N19/52H04N19/51H04N19/96
Inventor 林建良陈渏纹黄毓文雷少民
Owner MEDIATEK INC
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