Moving Image Converting Apparatus, Moving Image Converting Method, and Computer Program

A moving image converting method for executing data conversion processing of moving image data in a moving image converting apparatus, the method comprising:

• executing block division processing for each of frames that form the moving image data, in a block dividing unit;
• detecting a block motion amount corresponding to a motion amount of an object contained in each of blocks obtained by the block division processing in the block dividing unit, in a motion amount detecting unit;
• calculating a line-of-sight motion amount of a viewer who views the moving image data, in a line-of-sight motion amount detecting unit;
• receiving the block motion amount and the line-of-sight-motion amount as input, and determining a block-corresponding sampling point phase change amount to be applied to spatial decimation processing on each of the blocks, in a sampling point phase change amount determining unit;
• and
• receiving the blocks obtained by the block division processing in the block dividing unit as input, executing the spatial decimation processing on the inputted blocks, and executing the spatial decimation processing to which the block-corresponding sampling point phase change amount determined by the sampling point phase change amount determining unit is applied, in a decimation processing unit.

A computer program for causing a moving image converting apparatus to execute data conversion processing of moving image data, the program comprising:

• a block dividing step of executing block division processing for each of frames that form the moving image data, in a block dividing unit;
• a motion amount detecting step of detecting a block motion amount corresponding to a motion amount of an object contained in each of blocks obtained by the block division processing in the block dividing unit, in a motion amount detecting unit;
• a line-of-sight motion amount detecting step of calculating a line-of-sight motion amount of a viewer who views the moving image data, in a line-of-sight motion amount detecting unit;
• a sampling point phase change amount determining step of receiving the block motion amount and the line-of-sight motion amount as input, and determining a block-corresponding sampling point phase change amount applied to spatial decimation processing on each of the blocks, in a sampling point phase change amount determining unit;
• and
• a decimation executing step of receiving the blocks obtained by the block division processing in the block dividing unit as input, executing the spatial decimation processing on the inputted blocks, and executing the spatial decimation processing to which the block-corresponding sampling point phase change amount determined by the sampling point phase change amount determining unit is applied, in a decimation processing unit.

A computer readable medium including computer executable instructions, wherein the instructions, when executed by a processor, cause the processor to perform a method comprising:

• executing block division processing for each of frames that form the moving image data;
• detecting a block motion amount corresponding to a motion amount of an object contained in each of blocks obtained by the block division processing;
• calculating a line-of-sight motion amount of a viewer who views the moving image data;
• receiving the block motion amount and the line-of-sight motion amount as input, and determining a block-corresponding sampling point phase change amount to be applied to spatial decimation processing on each of the blocks;
• and
• receiving the blocks obtained by the block division processing as input, executing the spatial decimation processing on the inputted blocks, and executing the spatial decimation processing to which the block-corresponding sampling point phase change amount determined is applied.