i search an algorithm for recognition symbols in images (made by cam).

The symbols are very easy, like circle, rectangel, hearth, or simple characters, numbers. But only 1 max. 2 symbols must be recognited.

Preferred code for c#, visual basic, java.

Important is, that the alignment of the image is free. Any angle was possible. It don't must recognize colored images. b/w is enough.

Thanks for any help,


ps: if you know a german tutorial i forever thankful ;-)