mmintersec - Intersection of images.

Synopsis: y = mmintersec( f1, f2, f3, f4, f5 )

Input: f1: Gray-scale (uint8 or uint16) or binary image (logical uint8).; f2: Gray-scale (uint8 or uint16) or binary image (logical uint8). Or constant.; f3: Gray-scale (uint8 or uint16) or binary image (logical uint8). Or constant. Default: No parameter.; f4: Gray-scale (uint8 or uint16) or binary image (logical uint8). Or constant. Default: No parameter.; f5: Gray-scale (uint8 or uint16) or binary image (logical uint8). Or constant. Default: No parameter.; Obs: f1, f2, f3, f4, f5 must have the same data type.

Output: y: Gray-scale (uint8 or uint16) or binary image (logical uint8).

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:

equation

generalized intersection:

equation

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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