| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein a Nyquist frequency decreases, and foldover noise increases since a distance between pixels to be read increases, when pixels are simply skipped with all pixels reading as well as a pixel information sequence and a spatial position relation left as they are. SOLUTION: A pixel block of 5×5 pixels is defined as a unit pixel block, pieces of pixel information of first, third, and fifth columns of first, third, and fifth rows of a pixel array are added and outputted as the output of the a-th row and the a-th column of the unit pixel block, next, pieces of pixel information of sixth, eighth, and tenth columns of the first, third, and fifth rows of the pixel array are added and outputted as the output of the a-th row and the b-th column of the unit pixel block. and similarly hereafter, pieces of pixel information are added and outputted up to the last column or to the vicinity of the last column. Thereafter, pieces of pixel information of the first, third, and fifth columns of sixth, eighth, and tenth rows of the pixel array are added and outputted as the output of the b-th row and the a-th column of the unit pixel block, and thereafter, a similar operation is repeated to read all optional pixels while performing thinning-adding operations. COPYRIGHT: (C)2004,JPO&NCIPI
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