Image processing apparatus and method
AssigneeSony Corporation
InventorKazushi Sato
Life of this patent
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Abstract
An image processing apparatus and a method for processing an image. The image processing apparatus includes circuitry configured to set a current quantization parameter for a current coding block in a layer lower than a layer of a largest coding block and a quantization parameter based on a difference between the current quantization parameter for the current coding block and a slice quantization parameter for a slice in which the current coding block is located. The circuitry quantizes image data to generate quantized data based on the current quantization parameter. Further, the circuitry codes the generated quantized data in a coding block including a hierarchical structure to generate a code data including the quantization parameter.
Claims8
An image processing apparatus, comprising:
- circuitry configured to
- set a current quantization parameter for a current coding block formed by block partitioning, which recursively splits a current largest coding block into smaller coding blocks, and a quantization parameter based on a difference between the current quantization parameter for the current coding block and a slice quantization parameter for a slice containing the current largest coding block and the current coding block,
- quantize transform coefficient data using the current quantization parameter for the current coding block to generate quantized data, and
- code the quantized data to generate a bit stream including the quantization parameter.
A method of an image processing apparatus for processing an image, the method comprising:
- setting, by circuitry of the image processing apparatus, a current quantization parameter for a current coding block formed by block partitioning, which recursively splits a current largest coding block into smaller coding blocks, and a quantization parameter based on a difference between the current quantization parameter for the current coding block and a slice quantization parameter for a slice containing the current largest coding block and the current coding block;
- quantizing, by the circuitry, transform coefficient data using the current quantization parameter for the current coding block to generate quantized data;
- and
- coding the quantized data to generate a bit stream including the quantization parameter.
Dependencies are inferred from the claim text.