Registration of media type image/vnd.radiance

[R Fritz]

Type name: image

Subtype name: vnd.radiance

Required parameters: None

Optional parameters: None

Encoding considerations: Binary preferred.  This is a binary image
   type with a text header; "binary" or "base64" are the only
   reasonable choices.

Security considerations: The Radiance HDR file format does not include
   executable code or scripts; it is a graphics file with an ASCII
   header. Compression is used, which could crash an image
   viewer. There is no way to completely rule out the possibility of
   malicious content, however HDR viewer applications do not usually
   run with administrator privileges--they seem poor targets for such
   attacks.

Interoperability considerations: byte orders are spelled in the
   published specification; we expect that Radiance HDR files will be
   readable on all systems.

Published specification: *Radiance File Formats*, available freely at
   <http://radsite.lbl.gov/radiance/refer/> and also as part of Ch 18
   of *Rendering With Radiance* (Booksurge/Amazon, ISBN 0974538108).

Applications that use this media type: Adobe Photoshop, AHDRIA,
   AHDRIC, CinePaint, FDRTools, hdrgen, HDR Shop, PFStools,
   Photosphere, Qtpfsgui, RadDisplay, Radiance, Web HDR

Additional information:
      Magic number(s): Text "#?RADIANCE\n" (octet sequence 23 3f 52 41
        44 49 41 4e 43 45 0a) at the beginning of the file.
      File extension(s): pic, hdr, rgbe, xyze
      Macintosh file type code(s):

Person & email address to contact for further information: rfritz at u.washington.edu

Intended usage: COMMON

Restrictions on usage: none

Author: Randolph Fritz

Change controller: Greg Ward (gregoryjward at gmail.com) / The Radiance  
Lighting
     Simulation Internet Group

Notes:
1. The "pic" extension is also used for Macintosh PICT files; it is  
deprecated.

2. The rgbe and xyze extensions represent information about the  
content of the files,
     and may conflict with the actual content of files. Applications  
should check.

3. Radiance also uses "?RADIANCE\n" as a tag for its octree files;
     applications should read the file header to confirm that the file
     is indeed a Radiance HDR file, as described in the specification.