Abstract: An inter mode for encoding a video macroblock is selected. An initial analysis on the macroblock homogeneity is performed to quickly reduce the number of inter modes for which motion estimation and rate distortion calculation are to be performed. An inter mode is selected based on these calculations and sub-pixel motion estimation, at various sub-pixel interpolation granularities, is performed only on the selected inter mode. Sub-pixel motion estimation may be skipped for macroblocks that exhibit relatively low distortion at the integer pixel level.

Abstract: An encoding device including: a variable-length code table generation section generating a variable-length code table based on first image data acquired by a first imaging section; and an encoded information generation section generating encoded information by encoding second image data acquired by a second imaging section based on the variable-length code table generated by the variable-length code table generation section.

Abstract: An inter mode for encoding a video macroblock is selected. An initial analysis on the macroblock homogeneity is performed to quickly reduce the number of inter modes for which motion estimation and rate distortion calculation are to be performed. An inter mode is selected based on these calculations and sub-pixel motion estimation, at various sub-pixel interpolation granularities, is performed only on the selected inter mode. Sub-pixel motion estimation may be skipped for macroblocks that exhibit relatively low distortion at the integer pixel level.

Abstract: To provide a process for coding the moving picture with higher speed and enhanced efficiency. The present invention provides a moving picture coding method for coding a moving picture of processing object through a predetermined process including a motion estimating process, determining whether or not the predetermined process (e.g., DCT process and quantization process) for a block of processing object can be omitted on the basis of the information regarding a difference between the block and a reference block of a frame to be referenced in coding (i.e., a frame to be referenced in making the motion vector detection), and a quantization parameter for use in a quantization process of the moving picture, performing the predetermined process if it is determined that the predetermined process can not be omitted, and omitting the predetermined process if it is determined that the predetermined process can be omitted and making a set defined value the result of the predetermined process for the block.

Abstract: To perform an adequate encoding process while cutting a data transfer amount in an encoding process of moving images. A moving image processing apparatus 1 has a motion detection/motion compensation processing portions 80 as a coprocessor for performing a motion detection process as a process of a large calculation amount added to a processor 10 for managing an entire encoding or decoding process of a moving image, and has a buffer addressed to a plurality of memory banks by interleaving. A procedure for reading image data on the motion detection process is a predetermined method, and a section capable of adequately handling a case of reducing read image data is provided. As for the moving image processing apparatus according to the present invention, it is possible, with such a configuration, to perform an adequate encoding process while reducing a data transfer amount in the encoding process of the moving image.

Abstract: A decoder has decoding means 101 for decoding encoded data combined into a block, placement means 102 for placing a decoding result obtained by the decoding means 101 at a position determined with a skip by the amount corresponding to the number of 0s if 0 is included in the decoding result to combine the decoding result into a block, and rearrangement table 103 in which an order in which decoding results are rearranged is registered. The placement means 102 places each of decoding results obtained by the decoding means 101 at a position after rearrangement with a skip by the amount corresponding to the number of 0s while referring to the rearrangement table 103.

Abstract: There is provided symbol association means 101 for associating each of reference places for encoded symbols with one of the symbols. Reference place identification means 102 cuts out, from an input bit sequence, each of bit sequences assigned to the symbols with a length corresponding to a maximum code length, identifies the reference place for the symbol with respect to each bit sequence cut out, and outputs the symbol corresponding to the identified reference place by referring to the symbol association means 101.

Abstract: There is provided symbol association means 101 for associating each of reference places for encoded symbols with one of the symbols. Reference place identification means 102 cuts out, from an input bit sequence, each of bit sequences assigned to the symbols with a length corresponding to a maximum code length, identifies the reference place for the symbol with respect to each bit sequence cut out, and outputs the symbol corresponding to the identified reference place by referring to the symbol association means 101.

Abstract: To provide a process for coding the moving picture with higher speed and enhanced efficiency. The present invention provides a moving picture coding method for coding a moving picture of processing object through a predetermined process including a motion estimating process, determining whether or not the predetermined process (e.g., DCT process and quantization process) for a block of processing object can be omitted on the basis of the information regarding a difference between the block and a reference block of a frame to be referenced in coding (i.e., a frame to be referenced in making the motion vector detection), and a quantization parameter for use in a quantization process of the moving picture, performing the predetermined process if it is determined that the predetermined process can not be omitted, and omitting the predetermined process if it is determined that the predetermined process can be omitted and making a set defined value the result of the predetermined process for the block.