3D video coding including depth based disparity vector calibration
First Claim
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1. A three dimensional (3D) video decoder apparatus comprising:
- circuitry to partition a block of a first picture into two or more sub blocks of the block including a first sub block and a second sub block;
circuitry to access a depth map associated with the block;
circuitry to access a disparity vector associated with the block, wherein the disparity vector provides disparity compensated prediction by referencing an already decoded second picture having a different view with respect to the first picture;
circuitry to selectively determine a calibrated disparity vector for the first sub block based at least in part on the disparity vector associated with the block and the depth map, wherein to selectively determine the calibrated disparity vector, the circuitry determines, using the depth map, a characteristic depth value corresponding to the first sub block, and calibrates the disparity vector associated with the block based on the characteristic depth value to generate the calibrated disparity vector for the first sub block, wherein to calibrate the disparity vector to generate the calibrated disparity vector, the circuitry provides the calibrated disparity vector for the first sub block as a modification of the disparity vector associated with the block based at least in part on a scaling factor and an offset factor, wherein the scaling factor and the offset factor are determined based on the characteristic depth value; and
circuitry to perform disparity compensated inter-prediction for the first sub block based on the calibrated disparity vector associated with the first sub block.
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Abstract
Systems, apparatus, articles, and methods are described including operations for 3D video coding including depth based disparity vector calibration.
12 Citations
20 Claims
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1. A three dimensional (3D) video decoder apparatus comprising:
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circuitry to partition a block of a first picture into two or more sub blocks of the block including a first sub block and a second sub block; circuitry to access a depth map associated with the block; circuitry to access a disparity vector associated with the block, wherein the disparity vector provides disparity compensated prediction by referencing an already decoded second picture having a different view with respect to the first picture; circuitry to selectively determine a calibrated disparity vector for the first sub block based at least in part on the disparity vector associated with the block and the depth map, wherein to selectively determine the calibrated disparity vector, the circuitry determines, using the depth map, a characteristic depth value corresponding to the first sub block, and calibrates the disparity vector associated with the block based on the characteristic depth value to generate the calibrated disparity vector for the first sub block, wherein to calibrate the disparity vector to generate the calibrated disparity vector, the circuitry provides the calibrated disparity vector for the first sub block as a modification of the disparity vector associated with the block based at least in part on a scaling factor and an offset factor, wherein the scaling factor and the offset factor are determined based on the characteristic depth value; and circuitry to perform disparity compensated inter-prediction for the first sub block based on the calibrated disparity vector associated with the first sub block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-implemented method for three dimensional (3D) video decoding, the method comprising:
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partitioning a block of a first picture into two or more sub blocks of the block including a first sub block and a second sub block; accessing a depth map associated with the block; accessing a disparity vector associated with the block, wherein the disparity vector provides disparity compensated prediction by referencing an already decoded second picture having a different view with respect to the first picture; selectively determining a calibrated disparity vector for the first sub block based at least in part on the disparity vector associated with the block and the depth map by determining, using the depth map, a characteristic depth value corresponding to the first sub block and calibrating the disparity vector associated with the block based on the characteristic depth value to generate the calibrated disparity vector for the first sub block, wherein calibrating the disparity vector to generate the calibrated disparity vector provides the calibrated disparity vector for the first sub block as a modification of the disparity vector associated with the block based at least in part on a scaling factor and an offset factor, wherein the scaling factor and the offset factor are determined based on the characteristic depth value; and performing disparity compensated inter-prediction for the first sub block based on the calibrated disparity vector associated with the first sub block. - View Dependent Claims (10, 11, 12, 13, 14)
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15. At least one non-transitory computer-readable medium comprising instructions stored thereon, which when executed by a computer, cause the computer to:
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partition a block of a first picture into two or more sub blocks of the block including a first sub block and a second sub block; access a depth map associated with the block; access a disparity vector associated with the block, wherein the disparity vector provides disparity compensated prediction by referencing an already decoded second picture having a different view with respect to the first picture; selectively determine a calibrated disparity vector for the first sub block based at least in part on the disparity vector associated with the block and the depth map, wherein to selectively determine the calibrated disparity vector, the computer determines, using the depth map, a characteristic depth value corresponding to the first sub block and calibrates the disparity vector associated with the block based on the characteristic depth value to generate the calibrated disparity vector for the first sub block, wherein to calibrate the disparity vector to generate the calibrated disparity vector, the computer provides the calibrated disparity vector for the first sub block as a modification of the disparity vector associated with the block based at least in part on a scaling factor and an offset factor, wherein the scaling factor and the offset factor are determined based on the characteristic depth value; and perform disparity compensated inter-prediction for the first sub block based on the calibrated disparity vector associated with the first sub block. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification