Patent Document ID: 10074162
Application ID: 15234377
Patent Status: 1

Claim One:
1. A processor-implemented method for brightness control of spatially adaptive tone mapping (SATM), the method comprising: converting, by a processor, luminance data, associated with pixels from a received image, to a logarithm domain; decomposing, by the processor, the logarithm domain luminance data into a base layer, and one or more detail layers; adjusting, by the processor, amplitudes of data in each of the layers, to map the amplitude data into a selected range; converting, by the processor, the adjusted layers from the logarithm domain to a linear domain; calculating, by the processor, a tone compression parameter based on statistics of the adjusted log domain base layer, the statistics associated with brightness of the received image; and applying, by the processor, a global tone compression function, based on the tone compression parameter (tcp), to the converted linear domain base layer (B) to generate a compressed linear domain base layer (Bc), according to the equation Bc=(log(B+tcp)−log(tcp))/(log(1+tcp)−log(tcp)).