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im_thresh
Langue: en
Version: 161908 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
im_thresh, im_slice - threshold an imageSYNOPSIS
#include <vips/vips.h>int im_thresh(in, out, threshold)
IMAGE *in, *out;
double threshold;
int im_slice(in, out, threshold1, threshold2)
IMAGE *in, *out;
double threshold1, threshold2;
DESCRIPTION
These functions have been replaced with the relational and boolean packages - see im_lessconst() and im_and() for much better ways of doing this.These functions operate on any non-complex input. The output image is a unsigned char image with the same sizes and the same number of channels as input.
im_slice() thresholds the image held by image descriptor in and writes the result on the image descriptor out. Output is a byte image with values less than threshold1) set to 0, values in [threshold1, threshold2) set to 128 and values greater than threshold2 set to 255 (x in range [a,b) means a<=x<b).
im_threshold() thresholds the image held by image descriptor in and writes the result on the image descriptor out. Output is a byte image with values less than threshold set to 0, and values greater or equal to threshold set to 255.
RETURN VALUE
The function returns 0 on success and -1 on error.SEE ALSO
im_dilate(3), im_erode(3), im_lessconst(3), im_and(3).COPYRIGHT
N. Dessipris,
AUTHOR
N. Dessipris - 26/04/1991Contenus ©2006-2024 Benjamin Poulain
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