How does face recognition work on Google Cloud Function?

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Face recognition on Google Cloud Function likely involves using Google's Cloud Vision API, which includes facial recognition capabilities. The process typically involves uploading an image containing one or more faces to the Cloud Vision API, which then uses machine learning algorithms to detect faces and identify specific features such as the eyes, nose, and mouth. Based on this information, the API can match the face to known individuals or perform facial analysis, such as determining age or gender. The results of the facial recognition process can then be returned to the calling application or service using Google Cloud Function.