How to implement region growing method in an image ??

i am doing a project on image processing background. for this project i want to implement region growing method for image segmentation.

[Ankurdeep Kaur]

@Image Analyst , Can you tell me how do I segment a leaf spot on the basis of the change in its colour? (According to my knowledge, a region growing code would help.) I need a code which separates the provided image into probably 5 regions. 1.The inner region which is whitish brown. 2.The region which is light brown. 3.The region which is dark brown. 4.The region which is blackish. 5. The outer region which is greenish yellow.

Answer 1

[Image Analyst]

Did you search the File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/index?utf8=%E2%9C%93&term=%22region+growing%22

[Ankurdeep Kaur]

@Image Analyst , Can you tell me how do I segment a leaf spot on the basis of the change in its colour? (According to my knowledge, a region growing code would help.) I need a code which separates the provided image into probably 5 regions. 1.The inner region which is whitish brown. 2.The region which is light brown. 3.The region which is dark brown. 4.The region which is blackish. 5. The outer region which is greenish yellow.

[Image Analyst]

You should calibrate your system with an x-rite ColorChecker chart. Then you can do calibrated color segmentation. Otherwise we don't know how far out to go to take the colors. If it's calibrated then you can have predefined CIELAB color that define each color gamut.

[Ankurdeep Kaur]

@Image analyst Can you help me with the code?