[mmsupgen] [Up] [mmcthin] Thinning And Thickening

mmcthick
Image transformation by conditional thickening.

Synopsis

y = mmcthick ( f , g , Iab = NullInterval, n = -1, theta = 45, DIRECTION = "CLOCKWISE" )

Input

f Image Binary image

g Image Binary image

Iab Interval

Default: NullInterval (Interval for homotopic thickening)
n Double Non-negative integer.

Number of iterations.

Default: -1 (Infinite (denoted by -1))
theta Double

Degrees of rotation: 45, 90, or 180.

Default: 45 (45)
DIRECTION String

Direction of rotation: 'CLOCKWISE' or 'ANTI-CLOCKWISE'.

Default: "CLOCKWISE" ('CLOCKWISE')

Output

y Image Binary image

Description

mmcthick creates the binary image y by performing a thickening of the binary image f conditioned to the binary image g. The number of iterations of the conditional thickening is n and in each iteration the thickening is characterized by rotations of theta of the interval Iab.

Examples

Pseudo convex hull
f=mmreadgray('blob2.tif')
mmshow(f)
t=mmse2hmt(mmbinary([[0,0,0],[0,0,1],[1,1,1]]),
                          mmbinary([[0,0,0],[0,1,0],[0,0,0]]))
print mmintershow(t)
. . . 
. 0 1 
1 1 1
f1=mmthick(f,t,40); # The thickening makes the image border grow
mmshow(f1)
f f1 
f2=mmcthick(f,mmneg(mmframe(f)),t,40) # conditioning to inner pixels
fn=mmcthick(f,mmneg(mmframe(f)),t) #pseudo convex hull
mmshow(f2)
mmshow(fn,f)
f2 fn,f

Equation

See also

mmfreedom Control automatic data type conversion.
mmthick Image transformation by thickening.
mmhomothick Interval for homotopic thickening.
mmse2hmt Create a Hit-or-Miss Template (or interval) from a pair of structuring elements.
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