I have done a lot of research and found out methods like adaptive thresholding , watershed etc that can be used of detecting veins in leaves . However thresholding isn't good as it introduces a lot of noise
All my images are gray image please could anyone suggest what approaches to adopt while considering this problem in urgent need of help
EDIT:My original image
After thresholding
As suggested by the answer i have tried the following edge detection
- Canny
Too much noise and unwanted disturbances
- Sobel
- Roberts
EDIT: Tried one more operation i get the following result its better than what i tried with canny and adaptive What do you feel?