Laplacian edge operator
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i coded up Laplacian edge operator using MFC c++ .. now i want to varify the result using matlab..
Laplacian Operator and Campass Gradient Operator: result is given below website: http://imm.io/626r
I used Prewitt for Compass Gradeint Operator ... How can i apply this in matlab ?
how can i apply laplacian operator in maltab.. is there any function for that ? i need a sample or example for laplacian operator in matlab.. any one can help me please ?
Thanks in Advace
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David Young
2011-5-30
I assume that the mask you applied in C++ was
0 -1 0
-1 4 -1
0 -1 0
and not what you gave in your comment to Oleg's reply.
If that's the case, then all you'd need to do in Matlab is to call the conv2 function, something like this:
mask = [0 -1 0; -1 4 -1; 0 -1 0];
result = conv2(image, mask);
You may need to select the right option for what to do at the boundaries of the image, to match what you did in C++.
4 个评论
Tina
2011-5-30
Tina
2011-5-30
Tina
2011-5-30
David Young
2011-5-30
You will need to show the results so I can see what the difference is. I suggest you apply both your C++ code and Matlab code to a very small array, and show the input and the results here.
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Harsha Vardhan Rao Avunoori
2011-5-30
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If you are interested in applying a Laplacian mask to determine the edges then you can try this
BW = edge( I,'log');
where I is your input image you can also search for edge in your MATLAB Help
1 个评论
David Young
2011-5-30
This also does zero-crossing detection, so you can't compare the results directly to your C++ code.
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