IMAGE PROCESSING DEVICE

Title:

IMAGE PROCESSING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/208681

Kind Code:

A1

Abstract:

In order to perform noise reduction processing which is less susceptible to noise and achieves a natural finish without unevenness and the like while maintaining edges, provided is an image processing device (103) provided with: a structural index calculation means (11) for, with respect to a notice pixel of an input image, calculating a structural index that is an index of the magnitude of a change in pixel value in a predetermined range around the notice pixel; a high-frequency component extraction means (12) for extracting a high-frequency structural index that is a high-frequency component of the structural index; a smoothing means (13) for calculating a smoothed structural index obtained by smoothing the structural index; a flatness index calculation means (14) for calculating, as a flatness index of the notice pixel, a synthesis index obtained by synthesizing the smoothed structural index and the high-frequency structural index; and a noise reduction means (15) for performing noise reduction processing on the notice pixel according to the flatness index.

Inventors:

TSUKIOKA TAKETO (JP)

Application Number:

PCT/JP2014/067030

Publication Date:

December 31, 2014

Filing Date:

June 26, 2014

Export Citation:

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Assignee:

OLYMPUS CORP (JP)

International Classes:

H04N5/21; G06T5/00; H04N1/409

Domestic Patent References:

WO2008105222A1

2008-09-04

Foreign References:

JP2004336652A	2004-11-25
JP2013026698A	2013-02-04
JP2008293425A	2008-12-04
JP2011248479A	2011-12-08