Image processing device and image processing method
AssigneeSony Corporation
InventorJunichi Tanaka
Life of this patent
Estimating the term…
Abstract
An image processing device is provided that is configured to decode an encoded stream to generate quantized data; set, according to a parameter indicating whether to use the same quantization matrix as a reference quantization matrix which is previously used, a current quantization matrix and inversely quantize the quantized data using the current quantization matrix.
Claims15
An image processing device comprising:
- circuitry configured to:
- decode an encoded stream to generate quantized data;
- set, according to a parameter indicating whether to use the same quantization matrix as a reference quantization matrix which is selected according to a type of the reference quantization matrix that includes a prediction mode and a size of the reference quantization matrix, a current quantization matrix;
- and
- inversely quantize the quantized data using the current quantization matrix.
An image processing method comprising:
- decoding an encoded stream to generate quantized data;
- setting, according to a parameter indicating whether to use the same quantization matrix as a reference quantization matrix which is selected according to a type of the reference quantization matrix that includes a prediction mode and a size of the reference quantization matrix, a current quantization matrix;
- and
- inversely quantizing the generated quantized data using the current quantization matrix.
A non-transitory computer-readable recording medium for storing therein a computer program that includes instructions which when executed on an image processing device causes the image processing device to execute an image processing method comprising:
- decoding an encoded stream to generate quantized data;
- setting, according to a parameter indicating whether to use the same quantization matrix as a reference quantization matrix which is selected according to a type of the reference quantization matrix that includes a prediction mode and a size of the reference quantization matrix, a current quantization matrix;
- and inversely quantizing the generated quantized data using the current quantization matrix.
Dependencies are inferred from the claim text.