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I have a .tiff image file with 3 bands. NDVI satellite image

I want to write a program, (python opencv?), that will find the first N densest points in the region. Densest, meaning the point with the most of its own colored points near it. For example, finding the densest points of red would look like:

enter image description here

I understand I should preprocess the image with filters. Is there any other methods I should apply to improve performance?

What algorithm would be most effective to find the densest points in this image?

Is it possible to get the set of neighbors for each dense point?

Is it possible to obtain the polygon shape from the densest point and its set of neighbor points?

closed as too broad by PolyGeo Jun 22 '16 at 2:31

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • As per the Tour there should be only one question asked per question. – PolyGeo Jun 22 '16 at 2:32