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I am currently working on a small project where I am trying to automate some stuff at home. I am building a model capable of identifying my face with OpenCV. This will be a live feed.

I am making the project's estimations and have a really low budget. Therefore I am trying to identify what could be the minimum quality video feed I can pass to my algorithm to identify any face. For now I am just trying to identify mine.

I understand facial recognition works primarily on the unique pattern that could be found in the face. What is the minimum video resolution I need to identify anyone with facial recognition?

nbro
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Graphs Rodriguez
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On page 2 of Axis' web page Identification and Recognition there is an estimate of the minimum number of pixels needed for identification, recognition and detection.

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Brian O'Donnell
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This is a pretty standard minimum "quality" (better said resolution in pixels between the eyes) needed for a facial recognition system:

Ensure that the image contains a frontal view of the face, good lighting, and at least 80 pixels between the eyes.

the bare minimum to identify a human face would be 25 to 75 pixels just between the eyes

In the end it comes to a detailed study of the camara location, distance, light, etc...

Raul Alvarez
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