Effect of a translation on cross correlation
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Hello,
To find displacement of a particle, I calculated the cross correlation between two instants (represented by two images with the same size). Then, I padded the images with zeros to see if a translation will have an effect on the displacement. Thus I found a difference in displacement vector( the difference can reach 1.5 pixel and the size of image is 56x56 pixels)
Is it normal to find a difference after padding?
N.B: To pad the image, I used
new_image(end+1:56,end+1:56)=0;
Thank you in advance
EDIT
The difference can even be more (22 px)
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