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mmintersec
Intersection of images.

Synopsis

function y = mmintersec ( f1 , f2 , f3 , f4 , f5 )

Input

f1 Image Gray-scale (uint8 or uint16) or binary image
f2 Image Gray-scale (uint8 or uint16) or binary image

Or constant.
f3 Image Gray-scale (uint8 or uint16) or binary image

Default: NULL

Or constant.
f4 Image Gray-scale (uint8 or uint16) or binary image

Default: NULL

Or constant.
f5 Image Gray-scale (uint8 or uint16) or binary image

Default: NULL

Or constant.

Output

y Image

Description

mmintersec creates the image y by taking the pixelwise minimum between the images f1, f2, f3, f4, and f5. When f1, f2, f3, f4, and f5 are binary images, y is the intersection of them.

Examples

Numerical example:
f=uint8([255   255    0   10    0   255   250]);

g=uint8([ 0    40   80   140  250    10    30]);

y1=mmintersec(f,g)

y1 =
    0   40    0   10    0   10   30

y2=mmintersec(f,uint8(0))

y2 =
    0    0    0    0    0    0    0
Binary image:
a = mmreadgray('form-ok.tif');

b = mmreadgray('form-1.tif');

c = mmintersec(a,b);

mmshow(a); 

mmshow(b); 

mmshow(c);
a b
c
Gray scale image:
d = mmreadgray('tplayer1.tif');

e = mmreadgray('tplayer2.tif');

f = mmreadgray('tplayer3.tif');

g = mmintersec(d,e,f);

mmshow(d); 

mmshow(e); 

mmshow(f); 

mmshow(g);
d e f
g

Equation

intersection:
generalized intersection:

Algorithm

function g = mmintersec_equ(f1, f2)
g = min(f1,f2);

See also

mmfreedom Control automatic data type conversion.
mmunion Union of images.
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Copyright (c) 1998-2008 by SDC Information Systems