Image processing device and method with a scalable quantization matrix
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Sep 20, 2017
filing date -
Feb 29, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An image processing device and method that enable suppression of an increase in the amount of coding of a scaling list. The image processing device sets a coefficient located at the beginning of a quantization matrix by adding a replacement difference coefficient that is a difference between a replacement coefficient used to replace a coefficient located at the beginning of the quantization matrix and the coefficient located at the beginning of the quantization matrix to the coefficient located at the beginning of the quantization matrix; up-converts the set quantization matrix; and dequantizes quantized data using an up-converted quantization matrix in which a coefficient located at the beginning of the up-converted quantization matrix has been replaced with the replacement coefficient. The device and method can be applied to an image processing device.
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International Classification(s)
- 2017 Application Filing Year
- H04N Class
- 19055 Applications Filed
- 14406 Patents Issued To-Date
- 75.61 % Issued To-Date
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- 0 Citation Count
- H04N Class
- 0 % this patent is cited more than
- 7 Age
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