Patent Document ID: 20160012570
Application ID: 14866112
Patent Status: 0

Claim One:
1. A method of transforming by a digital system an N-bit raw wide dynamic range (WDR) Bayer image to a K-bit raw red-green-blue (RGB) image wherein N>K , the method comprising: converting the N-bit raw WDR Bayer image to an N-bit raw RGB image; computing a luminance image from the N-bit raw RGB image; computing a pixel gain value for each luminance pixel in the luminance image to generate a gain map; applying a hierarchical noise filter to the gain map to generate a filtered gain map; applying the filtered gain map to the N-bit raw RGB image to generated a gain mapped N-bit RGB image; and downshifting the gain mapped N-bit RGB image by (N−K) to generate the K-bit RGB image.