Image Processing

Question

Hi Friends,

               I am try to write a code for Image processing using c#.net windows forms.
In my database or drive I have 5 plant images. At the runtime of my application I captured new Image for plant. My Questions are
1. How to compare Captured Image and database Images are identical or not?
2. How to Compare Image Object(i.e Image with in the image)?
3. How to Calculate Plant height & Width for plant in Image?

Please help me. Thanks in advance...

Thanks,
Pavan Kumar