Face Recognition demo - Baidu's face-enabled entrance

@machinelearnbot 

Instead of 1-to-1 matching, where the task is to verify if you are who you say you are, this requires the harder 1-to-N matching, where we have to check if you're any one of N persons. Here, N is over 10,000. This also has to have very high accuracy, given that this is a security-critical application.