Image capturing apparatus and method for controlling an image capturing apparatus for capturing and processing a plurality of pieces of exposure and dark image data to correct combined exposure image data in accordance with combined dark image data

Patent metadata

Field	Value
Publication number	US-8982249-B2
Application number	US-201213646895-A
Country	US
Kind code	B2
Filing date	Oct 8, 2012
Priority date	Oct 12, 2011
Publication date	Mar 17, 2015
Grant date	Mar 17, 2015

Abstract

Image capturing is performed with an image pickup element being exposed to light, whereby a plurality of pieces of exposure image data are obtained. Image processing is performed on the plurality of pieces of exposure image data. The plurality of pieces of exposure image data output are combined into combined exposure image data. A plurality of pieces of dark image data are obtained and one piece of dark reference image data is generated. Image processing that uses a parameter based on the image processing performed on each exposure image data is performed on the one piece of dark reference image data, whereby a plurality of pieces of processed dark image data are output. The plurality of pieces of processed dark image data are combined into combined dark image data. The combined exposure image data is corrected in accordance with the combined dark image data.

First claim

The invention claimed is:

1. An image capturing apparatus comprising:
an image pickup configured to capture an image of a subject and output image data;
an image processor configured to perform image processing on image data output from the image pickup;
a combiner configured to combine a plurality of pieces of image data;
a corrector configured to correct the combined exposure image data; and
a controller configured to perform control so that
the image pickup performs i…

Assignees

• Canon Kk

Inventors

• Uchida Mineo

Classifications

• H04N25/67

  Electricity · mapped topic

• H04N23/741 Primary

  Electricity · mapped topic

• H04N25/63

  Electricity · mapped topic

• H04N23/951 Primary

  Electricity · mapped topic

• H04N5/23232

  Electricity · mapped topic