Claurissa Tuttle's Tone Mapping
Graphics 6620

Tone Mapping.

Tone mapping was implemented by find the log average of all of the RGB values for a rendered scene. The rendered scene is then scaled in a few simple equations which include the log average and a value of alpha. Alpha is used to control how bright or dark the resulting image will be. The original rendered scene, the resultant images and the values of alpha which were used to tone map the original rendered scene are given below.

	This image is the original image of a scene with a very bright light. Below are the images resulting from applying tone mapping, using the specified value for alpha, to this image.
Alpha=0.1	Alpha=0.2	Alpha=0.5

	This image is the original image of a scene with a darker look. Below are the images resulting from applying tone mapping to this image.
Alpha=0.05	Alpha=0.2	Alpha=0.5
Alpha=0.8