How to separate the given segmented image based on the region produced and save as separate image

Here is the image of segmentation I have done,

Now I want to separate the last image from the given result based on the region which is

 produced  and save as separate region image and do further work on it
How can I do it?

Answer 1

[Image Analyst]

I have no idea what the last image is, but you can save images with imwrite() into standard image file formats, or you can use save() if you want to save a floating point image in MATLAB proprietary format .mat file. Images must be rectangular.