Patent Document ID: 9697593
Application ID: 14165577
Patent Status: 1

Claim One:
1. A method, comprising: performing tone mapping on a high dynamic range (HDR) image using a set of bit-depths obtained at each unit of an irradiance range of a scene, wherein the set of bit-depths corresponds to a plurality of images of the scene, wherein performing tone mapping on the HDR image using the set of bit-depths obtained at each unit of the irradiance range of the scene, comprises: obtaining a set of defined irradiance values in each unit of the irradiance range using a bit-depth determined using the set of bit-depths at that unit of the irradiance range; obtaining irradiance to intermediate display level mapping for a given pixel based on the irradiance range of a plurality of pixels in a predetermined neighborhood of that pixel and the obtained set of defined irradiance values in the irradiance range of the predetermined neighborhood of that pixel; and performing tone mapping on the HDR image by mapping each of the plurality of pixels to available display levels using the determined irradiance to intermediate display level mapping for that pixel and distribution of irradiance values in the predetermined neighborhood of that pixel, wherein the tone mapping is performed on the HDR image to map pixel values in different irradiance ranges of the HDR image to a dynamic range of a display device and prevent posterization.