Image decoding device, image decoding method, and program
AssigneeKddi Corporation
InventorsYoshitaka KIDANI, Haruhisa KATO, Kei KAWAMURA
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Abstract
An image decoding device includes a first intra-frame predicting part configured to generate first predicted pixels based on decoded pixels and control information, a second intra-frame predicting part configured to generate, from one or more block vectors for a block to be decoded, second predicted pixels based on the decoded pixels and the control information, a storing part configured to store the decoded pixels, an inter-frame predicting part configured to generate third predicted pixels based on the stored decoded pixels and the control information and an adder configured to add the prediction residual and the first predicted pixels to the third predicted pixels to derive the decoded pixels.
Claims25
An image decoding device comprising:
- a memory storing instructions;
- and
- one or more processors configured to execute the instructions to:
- decode control information and quantization values;
- dequantize the quantization values to derive transform coefficients;
- inverse-transform the transform coefficients to derive a prediction residual;
- generate first predicted pixels based on decoded pixels and the control information;
- generate, from one or more block vectors for a block to be decoded, second predicted pixels based on the decoded pixels and the control information;
- store the decoded pixels;
- generate third predicted pixels based on the stored decoded pixels and the control information;
- and
- add the prediction residual and the first predicted pixels to the third predicted pixels to derive the decoded pixels.
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A decoding method comprising:
- decoding control information and quantization values;
- dequantizing the quantization values to derive transform coefficients;
- inverse-transforming the transform coefficients to derive a prediction residual;
- generating first predicted pixels based on decoded pixels and the control information;
- generating, from one or more block vectors for a block to be decoded, second predicted pixels based on the decoded pixels and the control information;
- storing the decoded pixels;
- generating third predicted pixels based on the stored decoded pixels and the control information;
- and
- adding the prediction residual and the first predicted pixels to the third predicted pixels to derive the decoded pixels.
A computer-readable non-transitory tangible storage medium storing thereon a program causing, when executed, one or more processors in a first wireless communication apparatus to execute:
- decode control information and quantization values;
- dequantize the quantization values to derive transform coefficients;
- inverse-transform the transform coefficients to derive a prediction residual;
- generate first predicted pixels based on decoded pixels and the control information;
- generate, from one or more block vectors for a block to be decoded, second predicted pixels based on the decoded pixels and the control information;
- store the decoded pixels;
- generate third predicted pixels based on the stored decoded pixels and the control information;
- and
- add the prediction residual and the first predicted pixels to the third predicted pixels to derive the decoded pixels.
Dependencies are inferred from the claim text.