Patent ID: 7636114

Claim:
An image sensing apparatus which senses an image by using an image sensor, comprising: dust position detection unit for detecting a pixel position corresponding to dust present on the image sensor or an optical system of the image sensor from a dust detection sensed image obtained by sensing a dust detection image, the dust position detection unit detects the pixel position corresponding to the dust from a first dust detection image and a second dust detection image and stores the respective detected pixel position as a first dust correction data and a second dust correction data, wherein the second dust detection image is sensed using an F-number larger than an F-number that is used for sensing the first dust detection image; and correction unit for performing a correction process for pixel data at the pixel position corresponding to the dust among the pixel data which form a normally sensed image obtained by normal image sensing, wherein: the correction unit does not perform the correction process if an F-number used for sensing the normally sensed image is smaller than the F-number used for sensing the first dust detection image; the correction unit performs the correction process using the first dust correction data if the F-number used for sensing the normally sensed image is larger than the F-number used for sensing the first dust detection image and is smaller than the F-number used for sensing the second dust detection image; and the correction unit performs the correction process using the second dust correction data if the F-number used for sensing the normally sensed image is larger than the F-number used for sensing the second dust detection image.