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AssigneeEastman Kodak Company
InventorsEdward B. Gindele, Stephen E. Johnson
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A method of processing a digital image to produce an enhanced digital image including receiving a source digital image; receiving a rendering tone scale function wherein the rendering tone scale function is a nonlinear function that has an absolute magnitude slope in the middle of the function domain that is greater than or equal to the absolute magnitude slope at either extreme of the function domain; and using the rendering tone scale function to calculate a de-rendering tone scale function. The method also includes receiving or calculating an adjustment tone scale function; combining the de-rendering, rendering, and adjustment tone scale functions to form an enhancement tone scale function; and using the enhancement tone scale function and the source digital image to produce an enhanced digital image.
A method of processing a digital image to produce an enhanced digital image, comprising the steps of:
Apparatus for processing a source digital image using a rendering tone scale function, wherein the rendering tone scale function has an absolute magnitude slope in the middle of the function domain that is greater than or equal to the absolute magnitude slope at either extreme of the function domain, to produce an enhanced digital image comprising:
Dependencies are inferred from the claim text.