Moving image coding apparatus and moving image decoding apparatus

1. A moving image encoding apparatus, comprising: a rectangular region size determiner which determines a size of rectangular regions of a sequence which is a set of a plurality of continuous pictures, the size being used for each of the rectangular regions of the sequence:

a rectangular region divider which divides an inputted image into rectangular regions having the size which was determined by the rectangular region size determiner; and

a rectangular region encoder which determines, for the rectangular regions, a corresponding coding mode;

a quantization and transformation processor which obtains coefficient data by performing an orthogonal transformation and quantization process on a prediction error, the prediction error including differences between pixel values of a predicted image and pixel values of the inputted image in each of the rectangular regions, the predicted image being obtained by performing prediction according to the corresponding coding mode; and

a multiplexer which multiplexes the size determined by rectangular region size determiner, the coding mode determined by the rectangular region encoder, and the coefficient data.

2. The moving image encoding apparatus according to claim 1 , wherein: each of the rectangular regions has the corresponding coding mode.

3. A non-transitory computer readable medium including data to be read by a decoder, the data generated by:

an encoder comprising circuitry which generates the data to include;

information about a size of rectangular regions of a sequence, the sequence being a set of a plurality of continuous pictures, the size being used for each of the rectangular regions of the sequence;

information about a corresponding coding mode for the rectangular regions for decoding the rectangular regions; and

information about coefficient data for performing an inverse quantization and an inverse transformation process to obtain a prediction error, the prediction error including differences between pixel values of a predicted image and pixel values of an input image which is inputted to the encoder in each of the rectangular regions, the predicted image being obtained by performing prediction according to the corresponding coding mode;

wherein the information about the size of rectangular regions of a sequence, the information about the corresponding coding mode for the rectangular regions, and the information about the coefficient data are multiplexed by the encoder.

4. The non-transitory computer readable medium according to claim 3 , wherein: each of the rectangular regions has the corresponding coding mode.

5. A moving image encoding apparatus, comprising:

circuitry configured to:

determine a size of rectangular regions of a sequence which is a set of a plurality of continuous pictures, the size being used for each of the rectangular regions of the sequence;

divide an input image into rectangular regions having the size which was determined;

determine a corresponding coding mode for the rectangular regions;

obtain coefficient data by performing an orthogonal transformation and quantization process on a prediction error, the prediction error including differences between pixel values of a predicted image and pixel values of the inputted image in each of the rectangular regions, the predicted image being obtained by performing prediction according to the corresponding coding mode; and

multiplex the size which has been determined, the corresponding coding mode which has been determined, and the coefficient data which has been obtained.

6. The moving image encoding apparatus according to claim 5 , wherein: each of the rectangular regions has the corresponding coding mode.