Table 2.

Percentage of frames correctly identified by classifier: Azure (Azure Cognitive Services), AWS (Amazon Web Services), SH (Sighthound), and Google (Google Cloud Vision). These results only include frames in which there was a face, and the two manual raters agreed on the class. Google Vision API does not support the neutral label.

Classifier	Frame type
	Emotive (n=1209), n (%)	Neutral (n=1393), n (%)	All (n=2602), n (%)
Azure	798 (66.00)	744 (53.40)	1542 (59.26)
AWSa	829 (68.56)	679 (48.74)	1508 (57.95)
Google	785 (64.92)	N/Ab	N/A
Sighthound	664 (54.92)	902 (64.75)	1566 (60.18)

^aAWS: Amazon AWS Rekognition.

^bN/A: not applicable.