HOG Descriptor function Error

2012 11 7
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Hi can any one help me i am running the function HOG but getting an error which is
??? Input argument "Im" is undefined.
Error in ==> HOG at 11 [L,C]=size(Im); % L num of lines ; C num of columns
you can find the function from the link below. http://www.mathworks.com/matlabcentral/fileexchange/index?term=tag%3A%22i+run+your+code%22

回答（1 个）

Walter Roberson
Walter Roberson 2012-11-7

0 个投票

How are you invoking the code? Are you passing in a grayscale image
Im = rgb2gray( imread('YourFile.jpg') );
hog(Im)

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Algorithms Analyst
Algorithms Analyst 2012-11-7
Thank you for your response..I am applying the function on a rgb image but I am not finding any result and getting the error
here is my code A=imread('lena.bmp'); X=HOG(A); imshow(X) when I apply the function imshow the window appears but no results..Solve it plz..Its very urgent or can we apply it on a video clip?thanks
Algorithms Analyst
Algorithms Analyst 2012-11-7
give me some suggestions Mr walter.
Walter Roberson
Walter Roberson 2012-11-7
The function is not defined for RGB images. Read the first line of the code where it says "grayscale".

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