Patent ID: 6967679
Filing Date: 2005-11-22
Classification: H04N

Abstract:
1. An imaging apparatus for picking-up a subject image formed by a imaging optical unit, comprising: an image pickup device for photoelectrically converting the subject image; a memory for storing gamma property data of said image pickup device and light quantity distribution data of incident light in accordance with pixel positions on the image pickup device; and a correcting circuit for correcting image signals outputted from each pixel of the image pickup device based on the gamma property data and light quantity distribution data that are stored in said memory, wherein the memory also stores light receiving ratio distribution data in accordance with pixel positions on the image pickup device, and the correcting circuit corrects the image signals outputted from each pixel based on the gamma property data, light quantity distribution data, and light receiving ratio distribution data that are in the memory, and wherein the correcting circuit determines incident light quantity for each pixel based on the image signals outputted from each pixel and gamma property data stored in the memory, corrects the determined incident light quantity based on the light quantity distribution data and light receiving ratio distribution data, and generates corrected image signals in accordance with the corrected incident light quantity.