Video coding device, video decoding device, video coding method, video decoding method and program
AssigneeNEC Corporation
InventorKeiichi CHONO
Life of this patent
Estimating the term…
Abstract
A video coding device is able to select, from among a plurality of color spaces, a color space of a prediction error signal in coded block units, and includes: an adaptive chroma quantization offset derivation unit for deriving a quantization offset for each color space; and an inverse quantization unit for inverse-quantizing a quantization coefficient image by using the chroma quantization offset for each color space.
Claims11
A video coding device capable of selecting, from among a plurality of color spaces, a color space of a prediction error signal in coded block units, the device comprising:
- a hardware including at least a processor,
- the hardware implements,
- an adaptive chroma quantization offset derivation unit which derives a chroma quantization offset for each color space;
- and
- an inverse quantization unit which inverse-quantizes a quantization coefficient image by using the chroma quantization offset for each color space.
A video decoding device capable of selecting, from among a plurality of color spaces, a color space of a prediction error signal in coded block units, the device comprising:
- a hardware including at least a processor,
- the hardware implements,
- an adaptive chroma quantization offset derivation unit which derives a chroma quantization offset for each color space;
- and
- an inverse quantization unit which inverse-quantizes a quantization coefficient image by using the chroma quantization offset for each color space.
-9. (canceled)
A video decoding method, implemented by a processor, capable of selecting, from among a plurality of color spaces, a color space of a prediction error signal in coded block units, the method comprising:
- deriving a chroma quantization offset for each color space;
- and
- inverse-quantizing a quantization coefficient image by using the chroma quantization offset for each color space.
-18. (canceled)
Dependencies are inferred from the claim text.