Inverse Quantization Adjustment for 3D Mesh Displacements
AssigneeOfinno, LLC
InventorChao Cao
Life of this patent
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Abstract
A decoder decodes, from a bitstream, a quantized wavelet coefficient representing a displacement of a vertex in a set of vertices of a three-dimensional (3D) mesh and decodes from the bitstream, quantization information indicating a quantization offset associated with a subset of vertices of the set of vertices. The decoder further inverse quantizes the quantized wavelet coefficient to determine a wavelet coefficient and adjusts, based on the vertex being in the subset, the wavelet coefficient according to the quantization offset to determine the displacement of the vertex.
Claims20
A method comprising:
- decoding, from a bitstream, a quantized wavelet coefficient representing a displacement of a vertex in a set of vertices of a three-dimensional (3D) mesh;
- decoding, from the bitstream, quantization information indicating a quantization offset associated with a subset of vertices of the set of vertices;
- inverse quantizing the quantized wavelet coefficient to determine a wavelet coefficient;
- and
- adjusting, based on the vertex being in the subset, the wavelet coefficient according to the quantization offset to determine the displacement of the vertex.
A decoder comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the decoder to:
- decode, from a bitstream, a quantized wavelet coefficient representing a displacement of a vertex in a set of vertices of a three-dimensional (3D) mesh;
- decode, from the bitstream, quantization information indicating a quantization offset associated with a subset of vertices of the set of vertices;
- inverse quantize the quantized wavelet coefficient to determine a wavelet coefficient;
- and
- adjust, based on the vertex being in the subset, the wavelet coefficient according to the quantization offset to determine the displacement of the vertex.
A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of an apparatus, cause the apparatus to:
- decode, from a bitstream, a quantized wavelet coefficient representing a displacement of a vertex in a set of vertices of a three-dimensional (3D) mesh;
- decode, from the bitstream, quantization information indicating a quantization offset associated with a subset of vertices of the set of vertices;
- inverse quantize the quantized wavelet coefficient to determine a wavelet coefficient;
- and
- adjust, based on the vertex being in the subset, the wavelet coefficient according to the quantization offset to determine the displacement of the vertex.
Dependencies are inferred from the claim text.