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Add one or more training images to each face that you want to recognize.
HPE recommends using images that are representative of how you will use face recognition. For example, if you intend to use face recognition in a situation that is not controlled for facial expression, add several images to each face showing different facial expressions.
It is better to use fewer high-quality images, rather than many low-quality images, because low-quality images can reduce accuracy.
A good training image for a face:
has not been converted from another file format to JPEG. Converting images to JPEG introduces compression artifacts. If you have JPEG images, avoid making many rounds of edits. Each time that a new version of the image is saved as a JPEG, the image quality degrades.