Patent ID: 9369639
Filing Date: 2016-06-14
CPC Classification: H04N

Claim Text:
1. An image processing apparatus comprising: a measurement unit configured to measure image capturing conditions based on a frame rate that are used when an object image is captured based on radiation that has passed through an object; a generation unit configured to generate image data containing the object image based on the radiation that has passed through the object; a first offset correction unit configured to perform an offset correction of the image data by subtracting correction image data containing a dark current component from the image data; a calculation unit configured to calculate an added value that is based on temporal fluctuation of a dark current value based on the image capturing conditions measured by the measurement unit; and a second offset correction unit configured to add the added value calculated by the calculation unit to the image data, including a pixel value of zero or less, which is offset-corrected by the first offset correction unit, wherein the calculation unit calculates the added value so that the image data offset-corrected by the first offset correction unit does not include the pixel value of zero or less.