IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

Title:

IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

Document Type and Number:

WIPO Patent Application WO/2015/005196

Kind Code:

A1

Abstract:

This invention provides an image processing device that reduces perturbations due to heat haze in images containing both stationary regions and moving objects. Said device obtains histograms for the level distributions of a target image being corrected and a correction frame and uses said correction frame to correct the target image while varying, as a function of the degree of similarity between the histograms, a proportion in accordance with which to mix the target image and the correction frame. In order to adaptively control the size of image blocks for which the histograms are computed, the device uses the image blocks from the target image and a corrected image to compute two indices having different degrees of robustness with respect to subject distortion and determines the appropriateness of the image-block size on the basis of the relationship between said indices. The difference between the histograms can be used as one of the indices, and the sum of absolute differences (SAD) between pixel values can be used as the other index.

Inventors:

KOMIYA YUICHIRO (JP)
YAMAGUCHI MUNEAKI (JP)
KOTO HARUHIKO (JP)

Application Number:

PCT/JP2014/067688

Publication Date:

January 15, 2015

Filing Date:

July 02, 2014

Export Citation:

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Assignee:

HITACHI INT ELECTRIC INC (JP)

International Classes:

H04N7/18; G06T3/00; G06T7/20; H04N5/225; H04N5/232

Foreign References:

JP2013122639A	2013-06-20
JP2012182625A	2012-09-20
JP2011229030A	2011-11-10
JP2008160733A	2008-07-10
JP2011215695A	2011-10-27
JP2006302115A	2006-11-02
JP2012182625A	2012-09-20
JP2011229030A	2011-11-10
JP2012107470A	2012-06-07
JP2013057774A	2013-03-28

Other References: