exrblur - perform a gaussian blur on an OpenEXR image
input.exr output.exr kernelsize
Performs a gaussian blur on the input image. This is useful for generating a
whitepoint image for chromatic adaptation of locally adapting tone mapping
The kernel size for the blur is given as a fraction of the image width. So, a
kernelsize of 0.25 will perform a blur with a kernel width 1/4 of the image
Billy Biggs <email@example.com>.