Detect circles by color

I am using 'imfindcircles' to detect bright circles but I am trying to refine it so that it will filter out green coloured circles. Is this possible?

Thank you

[Adam]

Can't you just filter out the green circles as a 2nd step, using the first result as a mask into the original image?

[Misha Patel]

Please can you give me some guidance or direct me to any material on how to use a 'mask'?

Thank you

[KSSV]

Attach the image....

[Misha Patel]

[Misha Patel]

The issue arises when the function begins to detect 'circles' around the object due to varous curves. I want it to only detect the yellow/green circles. I have already adjusted the sensitivity and cannot change it more without it stopping detecting certain markers. Thanks

Answer 1

[Image Analyst]

See the Color Thresholder on the Apps tab of the tool ribbon.

See my File Exchange for a few color segmentation demos.

See the attached zip file where I track a green Sharpie.