debian man page for exrpptm

exrpptm(1)						      General Commands Manual							exrpptm(1)

NAME
       exrpptm - performs tone mapping on an OpenEXR image (photoreceptor)

SYNOPSIS
       exrpptm [options] input.exr output.exr

DESCRIPTION
       Performs the tone mapping function described in this paper:

       Erik  Reinhard and Kate Devlin.	Dynamic Range Reduction Inspired by Photoreceptor Physiology.  IEEE Transactions on Visualization and Com-
       puter Graphics (2004).

       The input image should be normalized, and the output file returned by this function should also be normalized before viewing.

OPTIONS
       -f     Controls the intensity of the resulting image.  Valid range is from -8 to 8, defaulting to 0.

       -m     Controls the contrast of the resulting image.  Valid range is from 0.3 to 1.0.  The default value of 0 uses an algorithm	to  calcu-
	      late an appropriate m factor for the image based on its luminance.

       -c     Amount  of  chromatic  adaptation  to  apply to the image.  Valid range is from 0 meaning no chromatic adaptation to 1 meaning fully
	      adapted.	Defaults to 0.

       -a     Controls the light adaptation.  Valid range is from 0 meaning that the adaptation is global to 1	meaning  that  the  adaptation	is
	      based on pixel intensity.  Defaults to 1, to trade detail visibility for contrast.

AUTHORS
       Billy Biggs <vektor@dumbterm.net>.

SEE ALSO
       exrtools(1).

exrtools 0.4							   December 2003							exrpptm(1)