Finding tires on a car.
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I have been working on extracting information from a picture of a car. I am having trouble finding the tires on this car. I have them down to distinct circles in a BW binary image. I have tried several codes and methods online using hough transforms but with no success. When I try Tao's code: http://www.mathworks.com/matlabcentral/fileexchange/9168 I get an error. My grayscale image is not 2-D. Any suggestions on how to convert it? Thanks for your help in advance.
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Walter Roberson
on 30 May 2011
Does ndims(YourImage) show 3 ? If so and it is a grayscale image, YourImage(:,:,1) would be appropriate for processing as a 2D grayscale image.
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David Young
on 30 May 2011
Also see rgb2gray from the Image Processing Toolbox.
Note that you should not binarise your image before using Tao's code - it expects the original image, if necessary converted to grayscale.
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Walter Roberson
on 30 May 2011
Though if the image is an RGB image that appears as grayscale, then just selecting the single plane will have the same effect as rgb2gray()
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