second derivative of an image

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jan
jan on 9 May 2014
Commented: Image Analyst on 11 May 2014
Hi every body
The contour of an object in one image is known as the points with second derivative equal to zero. How can i get this characteristic knowing that I have only the image (the pixels intensity)??
Please can any one help me, thanks a lot

Answers (1)

Nitin
Nitin on 10 May 2014
There is a nice explanation on image derivative here . Please check it out, slide 23 onwards.
  4 Comments
Image Analyst
Image Analyst on 11 May 2014
Why don't you post your image to help with your explanation about what you want to measure in the image?

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