For creating openexr environment maps.
exrenvmap [options] infile outfile
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.
-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
-w x
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.
-f r n
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.
-t x y
sets the output file's tile size to x by y pixels (default is 64 by 64)
-p t b
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
-z x
sets the data compression method to x (none/rle/zip/piz/pxr24, default is zip)
-v
verbose mode
-h
prints these options
This manual page was written by Andrew Lau <[email protected]>, for the Debian GNU/Linux system (but may be used by others).