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Side-Profile-Detection
Detecting face profiles (i.e., frontal, left, and right) using face detection model MTCNN
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WorkOS
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side profile detection, but only with frontal/left/right, no differentiation between 45º and 90º
I have some code doing this in an open source C++ project here: https://github.com/bsenftner/ffvideo Towards the bottom of the README on that page you'll see an image titled "demonstrating tilted head registration" describing what you're trying to do here.
Doable? Certainly! This is the first step in most face recognition pipelines, to detect the face and then crop and align the face chip before generating a face recognition feature vector. Have a look at the insight face GitHub repo as they demonstrate how to do this step: https://github.com/deepinsight/insightface