hi all,

I want to analyze these images. See links below. The background and the crystals have the same color thus, making it difficult to segment. And since the background and crystals have the same color, it is difficult to simply subtract the background. Please, I need ideas on how to proceed with this analysis. Thanks.

Raphael.

https://drive.google.com/file/d/0B6nj1d7RmQ7TRmNwZzI1ajdhbFk/edit?usp=sharin...

https://drive.google.com/file/d/0B6nj1d7RmQ7TUUNpNEl4VzlWOEE/edit?usp=sharin...

https://drive.google.com/file/d/0B6nj1d7RmQ7TcHpoNjM0ZFhSZ1U/edit?usp=sharin...