MAN page from RedHat Other XITE-3.3-3.i386.rpm
STVAR
Section: User Commands (1)
Updated: 16 Mar 1998
Index
NAME
stvar - local variance
SYNTAX
stvar [-t] <inimage> <outimage> <deltax> <deltay> <k>
DESCRIPTION
Local variable threshold.
t(x,y) = k*s(x,y) + u(x,y)
r(x,y) = b(x,y) - t(x,y) + 128
[-t] r(x,y) = if( b(x,y) >= t(x,y)) then 255 else 0
r(x,y) = output image
u(x,y) = mean component
s(x,y) = st. dev component
b(b,y) = pixel value in (x,y)
deltax = Local area width
deltay = Local area height
OPTIONS
- -t
- Threshold the result.
RESTRICTIONS
inputmust have bands with pixel type unsigned byte.
REFERENCE
Wayne Niblack: An introduction to Digital Image Processing
AUTHOR
Otto Milvang
ID
$Id: stvar.c,v 1.27 1997/01/10 16:17:34 svein Exp $
Index
- NAME
- SYNTAX
- DESCRIPTION
- OPTIONS
- RESTRICTIONS
- REFERENCE
- AUTHOR
- ID
This document was created byman2html,using the manual pages.
