Method, apparatus, and program for encoding image, method, apparatus, and program for decoding image, and image processing system
AssigneeSamsung Electronics Co., Ltd.
InventorNaofumi WADA
Life of this patent
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Abstract
Provided is an image encoding device including an encoding unit that encodes a down-sampling image obtained by performing down-sampling of a color difference signal; a decoding unit that decodes the encoded encoding image; and a filter information generation unit that performs up-sampling of a color difference signal of the decoded decoding image, filters the color difference signal of the decoded image by using the up-sampled color difference signal of the decoded image and a luminance signal as reference signals, and acquires filter information related to the filtering.
Claims20
An image encoding device comprising:
- an encoding unit that encodes a down-sampling image obtained by performing down-sampling of a color difference signal;
- a decoding unit that decodes the encoded encoding image;
- and
- a filter information generation unit that performs up-sampling of a color difference signal of the decoded decoding image, filters the color difference signal of the decoded image by using the up-sampled color difference signal of the decoded image and a luminance signal as reference signals, and acquires filter information related to the filtering.
An image decoding device comprising:
- a filter information separation unit that separates an encoding image and filter information from a reception unit that receives encoding data including the encoding image and the filter information, the encoding image being obtained by encoding a down-sampling image which is obtained by performing down-sampling of a color difference signal;
- a decoding unit that decodes the separated encoding image;
- and
- a filtering unit that performs up-sampling of the color difference signal of the decoded decoding image and filters the color difference signal of the decoded image in accordance with the filter information by using the up-sampled color difference signal of the decoding image and a luminance signal as reference signals.
An image encoding method comprising:
- encoding a down-sampling image obtained by performing down-sampling of a color difference signal;
- decoding the encoded encoding image;
- performing up-sampling of a color difference signal of the decoded decoding image;
- filtering the color difference signal of the decoded image by using the up-sampled color difference signal of the decoded image and a luminance signal as reference signals;
- and
- acquiring filter information related to the filtering.
An image decoding method comprising:
- receiving encoding data comprising an encoding image obtained by encoding a down-sampling image and filter information, the down-sampling image being obtained by performing down-sampling of a color difference signal;
- decoding the encoding image separated from the encoding data;
- performing up-sampling of the color difference signal of the decoded decoding image;
- and
- filtering the color difference signal in accordance with the filter information by using the up-sampled color difference signal of the decoding image and a luminance signal as reference signals.
Dependencies are inferred from the claim text.