Patent ID: 7978238

Claim:
An image sensing apparatus, comprising: an image sensing device that obtains image data while the image sensing device is exposed to light; and a correction unit that corrects noise in the obtained image data, wherein the noise is due to at least dark current generated in the image sensing device, wherein a set of predetermined conditions includes conditions in which (i) a sensitivity set in the image sensing apparatus is lower than a reference sensitivity, (ii) an exposure period for obtaining the image data is set shorter than a reference period of time, and (iii) temperature at a time of obtaining the image data is lower than a reference temperature, wherein if at least one predetermined condition from the set of predetermined conditions is satisfied, the correction unit controls so as not to output image data from the image sensing device while the image sensing device is shielded from light and corrects the image data by subtracting a value of first correction data pre-stored in a storage medium from a value of the image data, and wherein if none of the predetermined conditions from the set of predetermined conditions is satisfied, the correction unit controls so as to output image data, as second correction data, from the image sensing device while the image sensing device is shielded from light and corrects the image data by subtracting the second correction data from the image data.