I need some guidance that how to capture the face when we blink the eyes. I have seen the core Image framework, but it detects only after capturing the image. But I need it to be live capture.

  • How is that "live"? You sound like you want to detect it before you've seen it. Are you really asking for a prediction? – candied_orange Feb 24 '20 at 9:32
  • is this a question about a specific product or framework? if so, which? – Martin K Feb 24 '20 at 10:59
  • I need to capture the image when user blinks the eyes. – kumaraprasad7 Feb 24 '20 at 11:42

The only way to know if the user blinked is to capture an image then analyze it.1

You'll probably have a loop

begin loop
    capture an image
    analyze image
    if user is blinking
        do something with image
        discard image
    end if
end loop

According to Wikipedia, people blink every 2 - 10 seconds (or less, when reading) and blinks last a around 100ms or so. You'll have to figure out how often you need to capture an image to get a good chance of capturing a blink.

My guess is that you'll probably capture and throw away a lot of images before you get the one you want.

1 I suppose you could use a sensitive microphone and listen for a blink, but that's silly. Better to stick with capturing a lot of images and analyzing them.

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