exrenvmap - for creating OpenEXR environment maps.

       This  manual  page  was  written by Andrew Lau <netsnipe@users.sourceforge.net>, for the Debian GNU/Linux
       system (but may be used by others).

                                                 March 31, 2004                                     EXRENVMAP(1)

       This  manual  page  documents briefly the exrenvmap command.  This manual page was written for the Debian
       distribution because the original program does not have a manual page.

       exrenvmap converts OpenEXR latitude-longitude environment maps into cube-face environment  maps  or  vice
       versa.

       exrenvmap - for creating OpenEXR environment maps.

-o     produces a ONE_LEVEL output file (default)

       -m     produces a MIPMAP_LEVELS output file

       -c     the output file will be a cube-face environment map (default)

       -l     the output file will be a latitude-longitude environment map

       -wx   sets  the  width of the output image to x pixels (default is 256).  The height of the output image
              will be x*6 pixels for a cube-face map, or x/2 pixels for a latitude-longitude map.

       -frn sets the antialiasing filter radius to r (default is 1.0) and the sampling rate to n by n (default
              is 5 by 5).  Increasing r makes the output image blurrier; decreasing r makes  the  image  sharper
              but may cause aliasing.  Increasing n improves antialiasing, but generating the output image takes
              longer.

       -txy sets the output file's tile size to x by y pixels (default is 64 by 64)

       -ptb if  the  input image is a latitude-longitude map, pad the image at the top and bottom with t*h and
              b*h extra scan lines, where h is the height of the input image.  This is useful  for  images  from
              360-degree panoramic scans that cover less than 180 degrees vertically.

       -d     sets level size rounding to ROUND_DOWN (default)

       -u     sets level size rounding to ROUND_UP

       -zx   sets the data compression method to x (none/rle/zip/piz/pxr24, default is zip)

       -v     verbose mode

       -h     prints these options

exrenvmap [options] infile outfile