Image decoding device, image decoding method, and program

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 second predicted pixels from two or more block vectors corrected for a block to be decoded, based on the decoded pixels and the control information, and store in a memory the two or more block vectors derived for the block to be decoded so as to be referred for another block to be decoded;
• 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 second predicted pixels from two or more block vectors corrected for a block to be decoded, based on the decoded pixels and the control information, and store in a memory the two or more block vectors derived for the block to be decoded so as to be referred for another block to be decoded;
• 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.