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The enumeration contains face photo image source types.

Constant Variable Description
1 DOCUMENT_PRINTED Image with a visual zone “document“.
2 DOCUMENT_RFID Image from the RFID document.
3 LIVE Live picture from a web camera.
4 DOCUMENT_WITH_LIVE Compares all faces on one image with each other, for example, a photo of a person showing their passport (or any other document) photo.
5 EXTERNAL Any other type or type is not defined.
6 GHOST Shadow image.

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