| 摘要 |
<P>PROBLEM TO BE SOLVED: To acquire digital image data of high quality by solving a problem of falling off of frequency information due to a shape of a sampling window or a problem of aliasing distortion, in an image imaging apparatus which detects an optical image by an imaging device and acquires digital image data. <P>SOLUTION: The image imaging apparatus comprises: a CCD which is provided with a plurality of pixels, records image information which a recording light holds for every pixel, and outputs an analog signal indicating the image information recorded for every pixel; a CCD driving unit which carries out scanning travel of the CCD in a prescribed range at the time of photographing for one frame; analog signal synthesizing means which synthesizes the analog signal for one frame output for every pixel from the CCD; and image signal processing means which carries out AD conversion of the analog signal after synthesizing, and generates a digital image signal. The sampling window shape in the case of AD conversion is made to be a gauss shape virtually by weighting the analog signal to be synthesized so that a gain may become higher in a center portion rather than in a circumference potion in the range of the scanning travel. <P>COPYRIGHT: (C)2012,JPO&INPIT |
