Can you help me to identify these shapes?

I am working on a project where i have to identify shapes on the pictures taken from a webcam.

This is the picture I have.

The thing is that i am not able to convert it properly into a binary image from where I can use it to identify the shapes. Please can anybody assist.

[Walter Roberson]

What error do you get when you attempt to convert it to a binary image?

[ROMIL]

Not particularly an error Walter. There is a lot of noise in the image and also edges aren't sharp so my binary image is like this

Answer 1

[Walter Roberson]

Your threshold is too high for the one on the left. The one on the right is going to be a problem, so imclose() it so you can get the boundary, then when you have extracted the region you can start doing edge processing.

Answer 2

[ROMIL]

Walter that's where I'm stuck. A code or an excerpt will be very useful.