Patent ID: 8605792
Filing Date: 2013-12-10
Classification: H04N

Abstract:
1. A coding apparatus for performing a deblocking filter process by dividing input moving image data into frames, and coding the moving image data by dividing the frames into macroblock lines and by shifting and changing, for each frame, a refresh area in which an amount of coding information allocated to a specific macroblock line is larger than that of another macroblock line, the coding apparatus comprising: a refresh area determining unit that determines that a refresh area in a current frame being subjected to a coding process as well as a macroblock line in the current frame corresponding to a macroblock line that will become a refresh area in a frame being subsequently subjected to the coding process becomes a next refresh area that indicates a second refresh area in the current frame; and a coding unit that divides the next refresh area into sub-block lines that correspond to an assembly of sub-blocks, that performs coding on an adjacent sub-block line corresponding to a sub-block line adjacent to the refresh area by allocating a larger amount of coding information than an amount allocated to the other macroblock line, and that performs coding on a non-adjacent sub-block line corresponding to a sub-block line that is not adjacent to the refresh area by allocating a smaller amount of coding information than an amount allocated to the adjacent sub-block line.