mmcdil - Dilate an image conditionally.

Synopsis

y = mmcdil( f, g, b, n )

Input

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

g: Gray-scale (uint8 or uint16) or binary image (logical uint8). Conditioning image.

b: Structuring element. Default: Elementary cross (mmsecross).

n: Non-negative integer. (number of iterations). Default: 1.

 

Obs: f, g must have the same data type.

Output

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

Description

mmcdil creates the image y by dilating the image f by the structuring element b conditionally to the image g. This operator may be applied recursively n times.

Examples

Numerical examples:

f=mmbinary(uint8([... 1 0 0 0 0 0 0;... 0 0 0 0 0 0 0;... 0 0 0 0 1 0 0])); g=mmbinary(uint8([... 1 1 1 0 0 1 1;... 1 0 1 1 1 0 0;... 0 0 0 0 1 0 0])); y1=mmcdil(f,g,mmsecross) y1 = 1 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 y2=mmcdil(f,g,mmsecross,3) y2 = 1 1 1 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 1 0 0

f=uint8([... 0 0 0 80 0 0;... 0 0 0 0 0 0;... 10 10 0 255 0 0]); g=uint8([... 0 1 2 50 4 5;... 2 3 4 0 0 0;... 12 255 14 15 16 17]); y1=mmcdil(f,g,mmsecross) y1 = 0 0 2 50 4 0 2 3 0 0 0 0 10 10 14 15 15 0 y2=mmcdil(f,g,mmsecross,3) y2 = 0 1 2 50 4 4 2 3 4 0 0 0 12 14 14 15 15 15

Binary image:

g=mmreadgray('pcb1bin.tif'); f=mmframe(g,5,5); y5=mmcdil(f,g,mmsecross,5); y25=mmcdil(f,g,mmsecross,25); mmshow(g); mmshow(g,f); mmshow(g,y5); mmshow(g,y25); (g) (g,f) (g,y5) (g,y25)

Gray-scale image:

g=mmneg(mmreadgray('n2538.tif')); f=mmintersec(g,0); Warning: Converting image from scalar to uint8. f=mmdraw(f,'LINE:40,30,60,30:END'); y1=mmcdil(f,g,mmsebox); y30=mmcdil(f,g,mmsebox,30); mmshow(g); mmshow(f); mmshow(y1); mmshow(y30); (g) (f) (y1) (y30)

Equation

Algorithm

function y=mmcdil_equ(f,g,b,n)
  y = mmintersec(f,g);
  for i=1:n
    dil = mmdil(y,b);
    y = mmintersec(dil,g);
  end

See Also

mmdil - Dilate an image by a structuring element.

mmfreedom - Control automatic data type conversion.

mmimg2se - Create a structuring element from a pair of images.

mminfrec - Inf-reconstruction.

mmsebox - Create a box structuring element.

mmsecross - Cross structuring element.

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