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Does there exist a freely-accessible API for recognizing non-faces? Or is there a way to use the faces.detect call on the face.com API for non-faces?

I'd like something that could recognize what state a picture of a license plate was from.

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OpenCV has a general purpose object detector which can be trained with Haar cascades. This is generalization to object detection of Viola & Jones' seminal approach for fast and accurate face detection.

For a tutorial on training the Haar classifier, see this. The link shows training for face recognition but you can use a similar process for any project (coming up with positive/negative examples, building up invariances, etc.)

peakxu
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You could have a look at OpenCV or other libraries for computer vision... there have been many questions about license plate recognition here on StackOverflow:

License plate recognition using OpenCV

https://stackoverflow.com/questions/1048130/license-plate-recognition

License Plate recognition using AForge.Net

I am sure you can find something useful in there...

OpenCV offers quite a lot of tools for detection and segmentation.

Hope it helps...

Community
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florianbaethge
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