exrenvmap(1) [debian man page]

EXRENVMAP(1)						      General Commands Manual						      EXRENVMAP(1)

NAME

       exrenvmap - for creating OpenEXR environment maps.

SYNOPSIS

       exrenvmap [options] infile outfile

DESCRIPTION

       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.

OPTIONS

       -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  verti-
	      cally.

       -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

AUTHOR

       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)

pfspanoramic(1) 					      General Commands Manual						   pfspanoramic(1)

NAME

       pfspanoramic - Perform projective transformations of spherical images

SYNOPSIS

       pfspanoramic  <source  projection>+<target  projection>	[--width  <val>]  [--height <val>] [--oversample <val>] [--interpolate] [--xrotate
       <angle>] [--yrotate <angle>] [--zrotate <angle>]

DESCRIPTION

       Transform spherical maps between various projections. Currently polar (latitude-longitude), angular (light probe), mirrorball and cylindri-
       cal are supported. The syntax for specifying the transformation is source_projection+target_projection, where source_projection is the cur-
       rent mapping that source image uses and target_projection is the projection you'd like it to be transformed to. If the projection has  some
       optional parameters, you can specify them with syntax: <source projection>/<argument>/...+<target projection>/<argument>/...

       As  of  now  only  angular  supports  a parameter - angle - which defines how many degrees from the viewing direction the projection should
       cover, e.g. angular+angular/angle=180 converts angular image to show only half of a hemisphere around the viewing direction.

OPTIONS

       --width <val>, -w <val>

       --height <val>, -h <val>

	      Make the target image respectively <val> pixels wide and/or high. If only one is specified, the other is computed  from  the  target
	      projection's typical W/H ratio.  If neither is specified, the width is taken from the source image and height is computed as above.

       --oversample <val>, -o <val>

	      Oversample  each	target	pixel <val>x<val> times, improving quality in areas that are scaled down with respect to the source image.
	      Reasonable values are 2 to 5, while setting it higher may make the reprojection unbearably slow.

       --interpolate, -i

	      Use bilinear interpolation when sampling the source image. Increases quality in magnified areas.

       --xrotate <angle>, -x <angle>

	      Rotate the spherical image <angle> degrees around X axis.

       --yrotate <angle>, -y <angle>

	      Rotate the spherical image <angle> degrees around Y axis.

       --zrotate <angle>, -z <angle>

	      Rotate the spherical image <angle> degrees around Z axis.

EXAMPLES

       pfsin grace_probe.hdr | pfspanoramic angular+polar -i -o 3 -y 90 -w 500 | pfsout grace.hdr

	      Transform grace angular map to polar (latitude-longitude) projection applying bilinear interpolation  and  3x3  oversampling,  while
	      rotating	it  by	90  degrees  around Y axis. The image will be resized to 500x250 pixels (as the polar projection has 2:1 width-to-
	      height ratio) and finally saved in grace.hdr.

SEE ALSO

       pfsin(1) pfsout(1)

BUGS

       Please report bugs and comments to Miloslaw Smyk <thorgal@wfmh.org.pl>.

																   pfspanoramic(1)