Symbols - Segmentation of Hand Bone for Bone Age Assessment - page 3

Symbols

T i Threshold value

m Mean of kernel centered

s Standard deviation of kernel centered

| G ( x , y )| Absolute gradient magnitude

w Kernel width

N [( x , y )] Immediate neighboring pixels of each element

S ( I , J ) Similarity measure

R i Region

m i Regional minima

Bn ( mi ) Flood at stage n of mi i

S Parametric domain

v (.) Embedded parametric curve

w 1 (.) Weight function that manipulates contour tension

w 2 (.) Weight function that manipulates contour rigidity

E int [.] Internal energy of contour

E ext [ v ( s )] External energy of contour

D(T) Diffused image at T-iteration

V(T) Local variance of D(T)

μx Mean of input image

μy Mean of output image

β (.) Beta function

σx Standard deviation of input image

σy Standard deviation of output image

argmax (.) Argument of the maximum

argmin (.) Argument of the minimum

x

Variable vector

f ( x )

Vector objective function

X L

Lower input sub-image

X U

Upper input sub-image

c L ( . )

CDF of lower sub-image

c U ( . )

CDF of upper sub-image

Y L ( . ) Lower output sub-image