| 摘要 |
PROBLEM TO BE SOLVED: To generate a signal matching an MTF characteristic between plural sensors and to suppress the generation of a deteriorated image in post processing by finding out coefficients for correcting a spatial frequency characteristic, changing the correction coefficients in accordance with a spatial position of an input signal and correcting the spatial frequency characteristic of an input system in each color component based on the changed coefficient. SOLUTION: In the operation of an MTF correction circuit in the image processor, a phase-matched signal Rin is inputted to an MTF correction circuit. Then delay for two main scanning pixels is executed by delay circuits 507, 508 and delayed signals Vr1 to Vr3 are outputted. Respective outputted signals Vr1 to Vr3 are multiplied by respective coefficients stored in respective areas of a correction coefficient changing means 500 by the use of multipliers 504 to 506, respective multiplied results are inputted to an adder 515 and the added result Rout is used as MTF correction data. |
