If you need more detection than the pre-packaged detectors are able to give you (i.e.: you need to detect glasses), you can always implement your own detectors.
If your detector can be found using python’s import mechanism, thumbor will be able to use it. Just add its full name to the detectors Configuration.
Creating a Custom Detector¶
As you can see here https://github.com/thumbor/thumbor/blob/master/thumbor/detectors/face_detector/__init__.py it is pretty easy to implement your own custom detector.
All you have to do is create a class that inherits from BaseDetector and implement a detect method that receives a context dictionary.
In the context dictionary there’s a key called “focal_points” to which you should append any focal points you found in the picture (using the FocalPoint class).
If your detector does not find any points, simple call the next() method passing in the context, so further detection can occur.