Patent ID: 8860718
Filing Date: 2014-10-14
Classification: G06T,H04N

Abstract:
1. A method for converting input image data of an image into output image data comprising the acts of: splitting the input image data into a first signal having a first dynamic range and a second signal having a second dynamic range; stretching the first dynamic range of the first signal to provide a stretched first signal having a stretched dynamic range, wherein the stretched dynamic range of the stretched first signal is higher than the second dynamic range of the second signal; combining the stretched first signal and the second signal to from a combined signal having a dynamic range bound by an upper value; analyzing the input image data to identity groups of pixels forming highlights in the image; converting pixel data for said identified groups of pixels into a third signal having a dynamic range extending upwards above the upper value to an upper maximum pixel value; combining the third signal with the combined signal to form the output image data; and outputting the output image data.