Contrast 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.

Title
Smart Image Enhancement Process
Application Number
12/423907
Publication Number
20100266214
Application Date
April 15, 2009
Publication Date
October 21, 2010
Inventor
Glenn A Woodell
Newport News
VA, US
Zia ur Rahman
Williamsburg
VA, US
Daniel J Jobson
Newport News
VA, US
Agent
Langley Research Center
VA, US
National Aeronautics And Space Administration
VA, US
Assignee
Space Administration
DC, US
United States of America represented by the Administrator of the National Aeronautics and
IPC
G06K 09/62
G06K 09/40
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