Method and device for image encoding and image decoding
AssigneeBoe Technology Group Co., Ltd.
InventorsPablo Navarrete Michelini, Lijie Zhang, Zhenglong Li, Jianmin He
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Abstract
The present disclosure discloses a method and device for image encoding and a method and device for image decoding. The encoding method comprises steps of: downscaling an input high resolution HR image into a low resolution LR image by a downscaler; compressing the LR image using a first compression method; extracting an index value from at least one of the HR image and the LR image; determining a parameter from a parameter database using the index value; compressing the parameter using a second compression method different from the first compression method; and obtaining a data stream by merging the compressed parameter and the compressed LR image.
Claims10
An encoding method comprising steps of:
- downscaling an input high resolution HR image into a low resolution LR image by a downscaler;
- compressing the LR image using a first compression method;
- extracting an index value from at least one of the HR image and the LR image;
- determining a parameter from a parameter database using the index value;
- compressing the parameter using a second compression method different from the first compression method;
- and
- obtaining a data stream by merging the compressed parameter and the compressed LR image.
An encoding device comprising:
- a downscaler configured to downscale an input high resolution HR image into a low resolution LR image;
- an encoder configured to compress the LR image using a first compression method;
- a parameter extractor configured to extract an index value from at least one of the HR image and the LR image and determine a parameter from a parameter database using the index value;
- a parameter compressor configured to compress the parameter using a second compression method different from the first compression method;
- and
- a muxer configured to obtain a data stream by merging the compressed parameter and the compressed LR image.
Dependencies are inferred from the claim text.