RETRO (vipl) functions
LIBRARY ROUTINE
lvsurf - Compute surface parameters (normal and angle)
LIBRARY CALL
int lvsurf(
xvimage *img1,
xvimage **img2,
xvimage **img3)
INPUT
- img1 - Pointer to FLOAT image used to represent a surface.
OUTPUT
none
RETURN VALUE
TRUE (1) on success, FALSE (0) on failure
DESCRIPTION
lvsurf will take a surface image and produce two
output images: one with the normals for each point
on the surface and one with the angle between the
surface normal and the normal to the zero plane of
the image.
The angle output image is in degrees.
The output images are allocated inside lvsurf; the
input image is not modified.
ADDITIONAL INFORMATION
none
EXAMPLES
none
SIDE EFFECTS
none
RESTRICTIONS
Works only on FLOAT images.
MODIFICATION
7-Mar-91 Scott Wilson - Added transfer of pixel sizes
from input to output
FILES
$RETRO/objects/library/vipl/src/lvsurf.c
SEE ALSO
vipl(3)
COPYRIGHT
Copyright (C) 1993 - 1997, Khoral Research, Inc. ("KRI") All rights reserved.