Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Software » comp.soft-sys.matlab

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

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
khoo

Posts: 63
Registered: 8/9/08
Re: How to calculate the angle between two images?
Posted: Apr 6, 2009 10:48 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

> > Bro Dave, when i rotate the images, i don't think the actual image boundaries will rotate...ABout the other spikes bear, i no sure about it but how to set the zero degree spike to zero??
>
> im8(0) = 0;
>
> Maybe
>
> Regards
>
> Dave Robinson


Bro Dave, still cannot...this is my currently code after i set zero spike to zero...but the graph still like the graph i get jz now..


clear all;clc

im1=imread('image1.jpg');
im11=rgb2gray(im1);
im111=im2double(im11);
[dx,dy]=gradient(im111);
p1=atan2(dy,dx);
im1111=edge(p1,'canny');
bw1 = bwmorph(im1111,'dilate');
im11111=p1.*bw1;
im6=hist(im11111(:),256);
im66=fft(im6);

im2=imread('image2.jpg');
im22=rgb2gray(im2);
im222=im2double(im22);
im333=zeros(size(im111));
im333(1:size(im2,1),1:size(im2,2))=im222;
[dx,dy]=gradient(im333);
p2=atan2(dy,dx);
im2222=edge(p2,'canny');
bw2 = bwmorph(im2222,'dilate');
im22222=p2.*bw2;
im7=hist(im22222(:),256);
im77=conj(fft(im7));
im8=real(ifft(im66.*im77));
plot(im8)
im8(1)=0;

izit my FFT there got problem?? cause normally FFT graph, the peak will at left side..but after IFFT the graph should be back like before FFT..but my graph's peak still at left side..can help me check my code got wrong at anywhere??


Date Subject Author
4/3/09
Read How to calculate the angle between two images?
khoo
4/3/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/3/09
Read Re: How to calculate the angle between two images?
khoo
4/3/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/3/09
Read Re: How to calculate the angle between two images?
khoo
4/3/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/3/09
Read Re: How to calculate the angle between two images?
khoo
4/3/09
Read Re: How to calculate the angle between two images?
khoo
4/4/09
Read Re: How to calculate the angle between two images?
khoo
4/4/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/4/09
Read Re: How to calculate the angle between two images?
khoo
4/4/09
Read Re: How to calculate the angle between two images?
khoo
4/5/09
Read Re: How to calculate the angle between two images?
khoo
4/5/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/5/09
Read Re: How to calculate the angle between two images?
khoo
4/5/09
Read Re: How to calculate the angle between two images?
khoo
4/5/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/5/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/7/09
Read Re: How to calculate the angle between two images?
khoo
4/7/09
Read Re: How to calculate the angle between two images?
khoo
4/7/09
Read Re: How to calculate the angle between two images?
Dave Robinson
12/8/12
Read Re: How to calculate the angle between two images?
Jeff
4/3/09
Read Re: How to calculate the angle between two images?
Skeptic
4/3/09
Read Re: How to calculate the angle between two images?
Dave Robinson
4/3/09
Read Re: How to calculate the angle between two images?
Roger Stafford
4/3/09
Read Re: How to calculate the angle between two images?
khoo
4/3/09
Read Re: How to calculate the angle between two images?
Roger Stafford
4/3/09
Read Re: How to calculate the angle between two images?
ImageAnalyst
4/3/09
Read Re: How to calculate the angle between two images?
khoo
4/4/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
Matt
4/6/09
Read Re: How to calculate the angle between two images?
khoo
4/6/09
Read Re: How to calculate the angle between two images?
Matt

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.