| 摘要 |
PROBLEM TO BE SOLVED: To provide an interpolation coefficient generating circuit capable of certainly responding even if a reduction ratio (a) for every line or every dot changes. SOLUTION: This interpolation coefficient generating circuit is provided with a distance input terminal inputting the distance from a target coordinate TP to a neighborhood pixel, a distance computing part calculating the distance from the target coordinate TP to each pixel of an input image existing around the target coordinate TP using the distance from the distance input terminal, a multiplier multiplying the value of each distance obtained by the distance computing part with the reduction ratio (a), a reduction ratio (a) inputting terminal inputting the reduction ratio (a) into the multiplier, a coefficient memory address generation part generating an address for selecting a filter factor from a coefficient memory using each output of the multiplier, a coefficient memory selection part selecting the filter factor by using the generated address, and a normalization part normalizing and outputting the selected filter factor. COPYRIGHT: (C)2004,JPO&NCIPI |
