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Image processing apparatus and image processing method

  • US 9,646,397 B2
  • Filed: 03/19/2013
  • Issued: 05/09/2017
  • Est. Priority Date: 04/19/2012
  • Status: Active Grant
First Claim
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1. An image processing apparatus which composes a plurality of images captured while changing an exposure amount, comprising:

  • a CPU implementing the functions of a displacement detection unit, a correction unit, a moving object region detection unit, a moving object region composition unit, an image composition unit and a moving object processing unit, wherein;

    the displacement detection unit is configured to detect a displacement amount between the plurality of images;

    the correction unit is configured to correct a displacement between the images based on the displacement amount detected by the displacement detection unit;

    the moving object region detection unit is configured to detect a moving object region from the plurality of images for which the displacement has been corrected;

    the moving object region composition unit is configured to compose a detection result of an underexposed image and a correctly exposed image with a detection result of the underexposed image and an overexposed image;

    the image composition unit j configured to compose the plurality of images for which the displacement has been corrected to generate a composite image; and

    the moving object processing unit is configured to replace a region corresponding to the moving object region of the composite image with an image obtained by performing weighted addition of the plurality of images.

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