matching template with image

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lama riad
lama riad 2012-6-16
I = imread('man.bmp'); % Load initial figure
a = imcrop(I,[50 40 150 100]);
m=imrotate(a,180);
%(Convolution is equivalent to correlation if you rotate the convolution kernel by 180.) To match the template to the image, use the fft2 and ifft2 functions.
C = real(ifft2(fft2(I).* fft2(m(a,2),256,256)));
I'm getting this error: ??? Subscript indices must either be real positive integers or logicals.
how to fix it ????

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回答（2 个）

Walter Roberson
Walter Roberson 2012-6-16
You are trying to index your rotated image at your cropped image -- m(a,2)
I do not know what you intend that to mean.
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lama riad
lama riad 2012-6-16
pardon me I mean I was seeking for help in matlab from people not necessarily in mathworks only n no one is replying I donno why I'm not professional in matlab that's why I'm asking..... some people published their works in mathwork n since I ask them regarding such a point in their work they r not replying
lama riad
lama riad 2012-6-16
n thank u for the reply

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Image Analyst
Image Analyst 2012-6-16
"a" is a matrix. So is "m" - in fact it is the rotated version of "a". So you cannot do m(a,2). The first index must be an integer number or array or a logical value or array. You cannot have a 2D or 3D matrix (an image) for an index. I haven't replied to anyone in the past 8 days because I was way out in the wilderness. I don't work for Mathworks, by the way.

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