Cropping Image With Edge Detection Results

[Michael Alonge]

Hello,

I have produced a 2D binary edge map from the canny edge detection tool that identifies circle-like edges in my photo. 

My question is if my binary edge map has many edges that enclose a space, how can I use this map to crop the original photo to make many smaller photos of those enclosed spaces. 

In the image above, one can see 6 circle-like objects whose perimeter has been detected. From this, I would like to create 6 arrays that represent the portions of the original image enclosed by these edges.

What tools might I use to achieve this? 

Thank you

[François Boulogne]

Hi Michael,

I think you want to label your features
(http://scikit-image.org/docs/dev/auto_examples/segmentation/plot_label.html#sphx-glr-auto-examples-segmentation-plot-label-py)
and then use their properties
(http://scikit-image.org/docs/dev/auto_examples/segmentation/plot_regionprops.html#sphx-glr-auto-examples-segmentation-plot-regionprops-py).

With that, you can crop the way you want. You can have a look to this
example:
https://github.com/scikit-image/skimage-demos/tree/master/digits_recognition
where I separated digits on images like this one:
https://github.com/scikit-image/skimage-demos/blob/master/digits_recognition/modern_digits_to_detect/small00000000.png

Best,

--
François Boulogne.
http://www.sciunto.org
GPG: 32D5F22F

[Michael Alonge]

Thank you, this looks like it's going to work great!