Matching Noisy Silhouettes

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Hi all,

What is the best way of matching small, noisy silhouettes, with very limited features? Matching against a template would be ideal, but most of the algorithms seem to be non-resilient to noise, or require significant features for successful matching.

Preferably, I would like to apply the recognition algorithm to a gray-scale, non-thresholded image. OCR algorithms seem to match my needs - any recommendations?

Thanks!