Patent ID: 9204113
Filing Date: 2015-12-01
Classification: H04N

Abstract:
1. An apparatus comprising: a scaling circuit configured to generate a plurality of scaled frames each having a plurality of pixels with a first exposure in response to a first subset of a plurality of frames generated by a sensor; a luma circuit configured to generate an average luminance value for each of a plurality of pixels having a second exposure in each of a second subset of said plurality of frames generated by said sensor, wherein (A) each of said average luminance values is calculated based on a plurality of neighboring pixels in a neighborhood of a current one of said pixels having said second exposure and (B) said neighborhood comprises an integral number of said neighboring pixels each having a ratio of two of a first type of pixel for every one of a second type of pixel and one of a third type of pixel; and a blending circuit configured to generate a plurality of output frames, each pixel of each of said plurality of output frames is generated by selecting (i) one of said pixels having said first exposure from one of said scaled frames or (ii) one of said pixels having said second exposure from one of said second subset of frames, wherein (A) each of said pixels of said output frames are selected in response to one of said average luminance values and (B) portions of each of said output frames provide a gradual linear blend between said pixels having said first exposure and said pixels having said second exposure.