Mark trees in an image using MATLAB

I want to mark trees present in an image. I tried many color-based segmentation methods like RGB Vector space & HSI Color Space, L*a*b* color space, Watershed segmentation,NDVI methods, but most of the tree areas are missing.

Does anybody know more color detection (or) segmentation procedures..?

Answer 1

[Image Analyst]

I've never done tree detection myself, so check out section 22.1.2 here for papers by people who have : http://iris.usc.edu/Vision-Notes/bibliography/contentscartog.html#Cartography,%20Aerial%20Images,%20Remote%20Sensing,%20Buildings,%20Roads,%20Terrain,%20ATR

[raviraja]

Thanks for the link.. I will go through that..:)