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how to solve a simultaneous equation of 2 variables.
A = [1 3;... 2 4;]; b = [5;... 4]; %Solve Ax=b as A\b X = A\b >> A\b ans = -...

거의 13년 전 | 0

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How to clear objects connected to the lower borederof the image?
You could use the <http://www.mathworks.com/help/images/ref/imclearborder.html imclearborder> function. There's a blog articl...

거의 13년 전 | 0

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Local-self similarity descriptor
Here are some options: 1. Take a histogram after converting your image to log polar coordinates. The following thread has some ...

거의 13년 전 | 0

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how to find center point coordinates of circles in an image file
You can use imfindcircles to find the circles. The function returns circle centers and radii. If the circles can't be found usin...

거의 13년 전 | 1

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dice similarity index between segmented image and ground truth
How about this: dice = 2*nnz(segIm&grndTruth)/(nnz(segIm) + nnz(grndTruth)) This expects segIm and grndTruth to be of th...

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How to design a 5by5 ,5cross and X-1 median filter
You can use the following two functions: <http://www.mathworks.com/help/images/ref/medfilt2.html medfilt2> and <http://www.m...

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Matching an image with a database
save idx.mat idx; save centers.mat centers;

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smoothening disparity
You might want to try some edge-preserving smoothing filters like anisotropic diffusion. This link might be useful: <http://...

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How do I circularly shift the alphabet without using circshift function?
alphabet = 97 : 122; >> char(alphabet) ans = abcdefghijklmnopqrstuvwxyz shifted_alphabet = alphabet-3;...

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Error in running the Scene change detection example in CV system toolbox
Replace the following line: mean_blks_prev = zeros([15, 1], 'single'); with mean_blks_prev = zeros([numel(X),1], 's...

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how to detect eye location?
You could follow the following general approach. Note that a lot will depend on your image, noise and kind of data. Use imf...

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Hiiii...I found trouble in dividing the image into different scale space and smoothing it by gaussian filter
If you don't have the Computer Vision System Toolbox and want to compute the scale space, why don't you just do the smoothing yo...

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A function that calculates how many entries' value and location are the same between two matrices
Try this: nnz(A==B) Ideally, you should be taking into account differences arising from floating point precision by defi...

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A function that calculates how many entries' value and location are the same between two matrices
Shouldn't the answer be 4? The 2's at location(3,1) also match.

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How to evaluate image segmentation results?
Two of the standard metrics used for image segmentation are dice overlap coefficient and jaccard index. These metrics measure th...

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Matching an image with a database
BoF seems like a reasonable approach to this problem. Usually, you are working with a much larger set of images than just 5. Cru...

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