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Battery life always takes a dive when you have Fb apps installed, including Instagram.

Do Instagram filters destroy battery life?

Because that’s all they need. And even less than normal because you don’t need to figure out bunny ears and exaggerated smiles. Simply whether a person is smiling or not.

Can you link to me a project hat does facial sentiment analysis in an efficient way? Actually curious if it’s possible to do this without hurting battery life much.

They can always cache the data and do the processing at a later time when your device is charging and/or when you do something resource-intensive (like uploading a video, etc) to conceal the extra resource usage.