Feature Extraction and Image Processing

204 Feature Extraction and Image Processing

the Cartesian definition given in Equation 5.74. According to this equation the displacement

vector is given by

(1, 0) = ( ) – b (5.84)

The matrix T stores the co-ordinates of (1, 0). This matrix is expanded to accommodate

all the computed entries.

Code 5.11 shows the implementation of the gathering process of the GHT. In this case

we use the Cartesian definition in Equation 5.74. The co-ordinates of points given by

%Generalised Hough Transform

function GHT(inputimage,RTable)

%image size

[rows,columns]=size(inputimage);

%table size

[rowsT,h,columnsT]=size(RTable);

D=pi/rowsT;

%edges

[M,Ang]=Edges(inputimage);

M=MaxSupr(M,Ang); ...