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Smart Image Enhancement ProcessContrast and lightness measures are used to first classify the image as being one of non-turbid and turbid. If turbid, the original image is enhanced to generate a first enhanced image. If non-turbid, the original image is classified in terms of a merged contrast/lightness score based on the contrast and lightness measures. The non-turbid image is enhanced to generate a second enhanced image when a poor contrast/lightness score is associated therewith. When the second enhanced image has a poor contrast/lightness score associated therewith, this image is enhanced to generate a third enhanced image. A sharpness measure is computed for one image that is selected from (i) the non-turbid image, (ii) the first enhanced image, (iii) the second enhanced image when a good contrast/lightness score is associated therewith, and (iv) the third enhanced image. If the selected image is not-sharp, it is sharpened to generate a sharpened image. The final image is selected from the selected image and the sharpened image.
Document ID
20120002953
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Jobson, Daniel J.
Rahman, Zia-ur
Woodell, Glenn A.
Date Acquired
August 25, 2013
Publication Date
February 7, 2012
Subject Category
Instrumentation And Photography
Report/Patent Number
Patent Number: NASA-Case-LAR-17240-1
Patent Application Number: US-Patent-Appl-SN-12/423,907
Patent Number: US-Patent-8,111,943
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-LAR-17240-1|US-Patent-8,111,943
Patent Application
US-Patent-Appl-SN-12/423,907
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