Image processing apparatus and method
AssigneeSony Corporation
InventorKazushi SATO
Life of this patent
Estimating the term…
Abstract
An image processing apparatus, including processing circuitry configured to decode a bit stream to generate quantized data. The bit stream includes a flag, for each block, that specifies whether or not a difference quantization parameter is present in the bit stream. The flag is included in a first layer that is higher than a second layer in which the difference quantization parameter is set. The processing circuitry is configured to set, according to the flag, a current quantization parameter for a current sub block formed by block partitioning, which splits a block into smaller sub blocks. The processing circuitry is configured to inversely quantize the generated quantized data using the set current quantization parameter.
Claims15
(canceled)
A method for processing an image performed by an image processing apparatus, the method comprising:
- decoding a bit stream to generate quantized data, the bit stream including a flag, for each block, that specifies whether or not a difference quantization parameter is present in the bit stream, and the flag being included in a first layer that is higher than a second layer in which the difference quantization parameter is set;
- setting, by processing circuitry of the image processing apparatus according to the flag, a current quantization parameter for a current sub block formed by block partitioning, which splits a block into smaller sub blocks;
- and
- inversely quantizing, by the processing circuitry, the generated quantized data using the set current quantization parameter.
An image processing apparatus, comprising:
- processing circuitry configured to
- decode a bit stream to generate quantized data, the bit stream including a flag, for each block, that specifies whether or not a difference quantization parameter is present in the bit stream, and the flag being included in a first layer that is higher than a second layer in which the difference quantization parameter is set;
- set, according to the flag, a current quantization parameter for a current sub block formed by block partitioning, which splits a block into smaller sub blocks;
- and
- inversely quantize the generated quantized data using the set current quantization parameter.
Dependencies are inferred from the claim text.