| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve image quality by suppressing accumulation of round-off errors at interpolation processing. <P>SOLUTION: A sub-pixel generation apparatus 22 includes: a first operation unit for executing average-value calculation for pixel values of a plurality of pixels in an image by round-up processing; a second operation unit for executing average-value calculation for pixel values of the plurality of pixels in the image by round-down processing; and a selection unit for generating interpolation pixels by at least one switchover processing out of a first switchover processing for switching between round-up processing and round-down processing according to positions of the interpolation pixels for interpolation in the image, a second switchover processing for switching between round-up processing and round-down processing for each encoding prediction method set in the image, and a third switchover processing for switching between round-up processing and round-down processing for each average-value calculation when the interpolation pixels are derived by a plurality of times of average-value calculations. <P>COPYRIGHT: (C)2010,JPO&INPIT |
