Hi,
I want to delineate the rim of this crater (refer attached image) using remote sensing software, apart from visual interpretation what are the other available techniques which i can opt for?
Note: I have zero knowledge of programming.
edge enhancement (ERDAS, Python and matlab)
I have tried Sobel edge detection, it worked well. Thank you Hein
You also have tools to extract circular features like Hough Circle transform.
You can implement a workflow as follow:
1. compute absolute gradient
2. use a ridge detection filter (e.g. hessian) to get linear feature
3. apply a threshold
4. use hough circle transform
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