Image taking apparatus
View Patent ↗The invention provides an image taking apparatus for shortening image taking time and obtaining a high quality image by preventing deterioration of the S/N ratio. A digital camera that performs image taking for generating image signals by capturing, with a CCD, object light sent via an image taking optical system includes: a shading correction section performing shading correction by adjusting gain depending on respective positions on the CCD; a scene determination section determining that a scene just shot is to be corrected if the scene just shot includes a uniform region with a predetermined or more area and a predetermined or higher bright ness; and a shading correction control section causing, if the scene just shot is determined by the scene determination section to be a scene to be corrected, the shading correction section to perform shading correction on an image signal obtained by image taking just performed.
1. An image taking apparatus that performs image taking for generating an image signal by capturing, with an image pickup device, object light sent via an image taking optical system, the image taking apparatus comprising:
a shading correction section that performs a shading correction by adjusting a gain depending on respective positions on the image pickup device;
a scene determination section that determines whether a scene just shot comprises a scene to be corrected which includes a uniform region with a predetermined area or larger than predetermined area; and
a shading correction control section that, if the scene just shot is determined by the scene determination section to be a scene to be corrected, causes the shading correction section to perform the shading correction on an image signal obtained by image taking just performed,
wherein the scene determination section determines whether a data value for one color is 200 or above and the data values for other colors are 50 or below when the maximum data value of one color is assumed to be 255, and, if it is determined that the data value comprises a uniform region with a predetermined or higher brightness, shading is apparent, the shading correction control section performs the shading correction on the image.