Gamma v.s. Tone Mapping

Many people might be confused with Gamma correction and HDR tone mapping.
To keep things simple, we can have a comparison here:

Gamma
1. non-linear curve
2. used for remapping the intensity of of color values of LDR images
3. remap range: 0~1 --- > 0~1

Tone Mapping
1. non-linear curve
2. used for remapping the intensity of of color values of both HDR images and LDR images
3. remap range: 0~[value>1] --- > 0~1;
0~1 --- > 0~1