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Topic: How to calculate the angle between two images?
Replies: 41   Last Post: Dec 8, 2012 11:02 PM

 Messages: [ Previous | Next ]
 khoo Posts: 63 Registered: 8/9/08
Re: How to calculate the angle between two images?
Posted: Apr 7, 2009 3:28 AM

Bro Dave, i ady get the radians for the images..but now i got one problem show in my program..i use several images with different angles to test the code..but all i get is same radian..how come will like this?? and this is my code currently:

clear all;clc

im11=rgb2gray(im1);
im111=im2double(im11);
p1=atan2(dy,dx);
im1111=edge(p1,'canny');
bw1 = bwmorph(im1111,'dilate');
im11111=p1.*bw1;
%subplot(2,1,1);hist(im11111);
im6=hist(im11111(:),256);
im66=fft(im6);

im22=rgb2gray(im2);
im222=im2double(im22);
im333=zeros(size(im111));
im333(1:size(im2,1),1:size(im2,2))=im222;
p2=atan2(dy,dx);
im2222=edge(p2,'canny');
bw2 = bwmorph(im2222,'dilate');
im22222=p2.*bw2;
%subplot(2,1,2);hist(im22222);
im7=hist(im22222(:),256);
im77=conj(fft(im7));
im8=real(ifft(im66.*im77));
im8(1)=0;
plot(im8);
[y,x]=max(im8);
rel_deg=((x*(2*pi/256))*180)/pi;

if rel_deg>180;
new_rel_deg=rel_deg-180
else
new_rel_deg=rel_deg
end

pls help me..and what is zero packing??izit i need to use zero packing to get the correct angle??

Date Subject Author
4/3/09 khoo
4/3/09 Dave Robinson
4/3/09 khoo
4/3/09 Dave Robinson
4/3/09 khoo
4/3/09 Dave Robinson
4/3/09 khoo
4/3/09 khoo
4/4/09 khoo
4/4/09 Dave Robinson
4/4/09 khoo
4/4/09 khoo
4/5/09 khoo
4/5/09 Dave Robinson
4/5/09 khoo
4/5/09 khoo
4/5/09 Dave Robinson
4/5/09 khoo
4/6/09 khoo
4/6/09 Dave Robinson
4/6/09 khoo
4/6/09 Dave Robinson
4/6/09 khoo
4/6/09 Dave Robinson
4/6/09 khoo
4/6/09 khoo
4/6/09 khoo
4/7/09 khoo
4/7/09 khoo
4/7/09 Dave Robinson
12/8/12 Jeff
4/3/09 Skeptic
4/3/09 Dave Robinson
4/3/09 Roger Stafford
4/3/09 khoo
4/3/09 Roger Stafford
4/3/09 ImageAnalyst
4/3/09 khoo
4/4/09 khoo
4/6/09 Matt
4/6/09 khoo
4/6/09 Matt