| 摘要 |
PROBLEM TO BE SOLVED: To provide an image signal processing apparatus for using a two-dimensional filter to apply geometrical correction to an image wherein the number of wires is decreased. SOLUTION: The image signal processing apparatus 10 is provided with LUTs 18, 20 and N×M memory blocks B in response to the size of the two-dimensional filter. Each of the memory blocks B is provided with a RAM 22 and a ROM 24. The RAM 22 of the one memory block stores pixel values of pixels different from those of the other memory blocks to address locations in response to an integer part of coordinate conversion information at an interval of M pixels in the vertical direction and an interval of N pixels in the horizontal direction. Each ROM 24 stores filter coefficients at address locations in response to the fractional part of the coordinate conversion information. The RAM 22 outputs the pixel value depending on an address signal from the LUT 18 in response to the integer part of the coordinate conversion information and the TOM 24 outputs the filter coefficient depending on the address signal from the LUT 20 in response to the fractional part of the coordinate conversion information. COPYRIGHT: (C)2006,JPO&NCIPI
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