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Patent Searching and Data


Title:
SYSTEMS AND METHODS OF SUPPRESSING SKY REGIONS IN IMAGES
Document Type and Number:
WIPO Patent Application WO/2014/100741
Kind Code:
A3
Abstract:
Various techniques are provided for systems and methods to process images to reduce consumption of an available output dynamic range by the sky in images. For example, according to one or more embodiments of the disclosure, a region or area in images that may correspond to the sky may be identified based on the location of the horizon in the images. A distribution of irradiance levels in the identified sky region may be analyzed to determine a dynamic range attributable to the sky region. A transfer function that compresses the dynamic range attributable to the sky region may be generated and applied so that the sky in the images may be suppressed, thereby advantageously preserving more dynamic range for terrestrial objects and other objects of interest in the images.

Inventors:
HÖGASTEN NICHOLAS (US)
NUSSMEIER MARK (US)
KURTH ERIC A (US)
HOELTER THEODORE R (US)
STRANDEMAR KATRIN (US)
BOULANGER PIERRE (US)
SHARP BARBARA (US)
Application Number:
PCT/US2013/077265
Publication Date:
September 04, 2014
Filing Date:
December 20, 2013
Export Citation:
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Assignee:
FLIR SYSTEMS (US)
International Classes:
H04N1/62; G06T5/40; H04N5/232; H04N5/33; H04N5/341
Foreign References:
US20110279673A12011-11-17
US20120213411A12012-08-23
EP1939809A12008-07-02
US20060078215A12006-04-13
Other References:
"Dynamic range compression and contrast enhancement inIR imaging systems", SPIE, PO BOX 10 BELLINGHAM WA 98227-0010 USA, 31 December 2007 (2007-12-31), XP040246825
Attorney, Agent or Firm:
FOLSOM, Brent A. (LLPIP Docketing Department,2323 Victory Avenue, Suite 70, Dallas Texas, US)
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