Color-based image segmenting with convolutional network

How can I segment an image by colors (for example by blue color) with convolutional network.

How to define the colors and these definitions (or labels) to be used by CNN to segment an image.

Thank you

Answer 1

[Image Analyst]

We've done this. We used segnet. To get ground truth images, be used traditional color segmentation and then manually "repaired" the few mistakes it made by painting over them. See the Color Thresholder on the Apps tab of the tool ribbon, or see my File Exchange.