Patent ID: 7920200
Filing Date: 2011-04-05
Classification: H04N

Abstract:
1. An image pickup device comprising: an optical system having a distortion characteristic, the optical system capturing an optical image of an object, the optical image captured being a distorted optical image, the distortion characteristic magnifying a center portion of the optical image and reducing a peripheral portion of the optical image; an image sensor that converts the distorted optical image into image data, the image sensor having a color filter array of Red(R) color filters, Green(G) color filters, and Blue(B) color filters; an image compression unit that calculates an addition of color image data sets of adjacent pixels to a target pixel to generate different color image data of the target pixel, the calculation of the addition being made with weighting the adjacent pixels based on distances of the adjacent pixels to the target pixel, the distances being defined under a condition that the distortion correction has been made and compresses the image data to generate compressed image data; an image storage that stores the compressed image data and sets of information that are needed to perform a distortion correction of the optical system; an angle-of-view setting unit that sets an angle of view for displaying the compressed image data; a read unit that reads out the compressed image data and the sets of information to generate read-out image data; an image decompressing unit that decompresses the read-out image data to generate decompressed image data; a first image processor that applies a filtering process to the decompressed image data to generate filtered image data, the first filtering process being performed based on the angle of view and the distortion characteristic; and a distortion correction unit that performs the distortion correction of the filtered image data to generate distortion-corrected image data that is to be displayed.