I have a PS3 eye and can run it with FaceTrackNoIR.
The eye uses more CPU than standard webcams. I can use a cheap standard webcam (not as good quality) and the CPU as utu says, is much lower. Looking at the FTN window it drifts between 5-11% with the PS3Eye. If FTN loses your face and needs to reacquire, all cores will spike momentarily. On a multi-core processor I suggest using affinity and setting it to a single core.
The eye is much better in low light and has higher FPS. I guess it has more demanding hardware and software.
Glo
Sorry, still slightly OT.
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