top of page

A High Dynamic Range (HDR) image contains a wider variation of intensity and color than is allowed by the RGB format with 1 byte per channel. 

 

Tone-mapping is a process that transforms the intensities in the image so that the brightest values aren't nearly so far away from the mean. 

​

Three major parallel operations are used:

​

Reduce: find the max and min of the luminance value

Histogram: Compute the histogram using atomicAdd() function

Scan: Perform an exclusive scan (prefix sum) on the histogram to get the cumulative distribution(CDF).

bottom of page