[Radiance-general] Radiance conversion routines

[William Thompson]

As part of a project to support the analysis of architectural designs to 
identify potential mobility hazards to those with significant low 
vision, I wrote routines for converting Radiance .hdr files to PNG, 
JPEG, or TIFF formats. 
<https://github.com/visual-accessibility/radiance-conversion> has 
build-from-sources for Linux and MacOS, plus pre-compiled binaries for 
Windows.

If you are interested in the project itself, see 
<https://www.osapublishing.org/josaa/abstract.cfm?uri=josaa-34-4-583>.

	- Bill