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門鎖壞了？為什么3D人臉識別歪個頭就認證失敗？ 發布日期：2022-04-27 10:53:00瀏覽量：2382 最近，有朋友在后臺給我們反饋，家里的3D人臉識別智能鎖歪個頭就無法識別，還提出“是不是智能鎖壞了”的疑問。對于這個疑問，小玥覺得必須給大家科普下，這其實與人臉姿態角度有關系的。 首先我們來個知識科普，在三維空間中人臉角度主要分成三種，分別是偏航角（yaw）、俯仰角（pitch）、翻滾角（roll），這三種角度分別對應的是左右轉動、上下轉動、側面轉動，行業內一般稱之為人臉姿態角度。 3D人臉識別主要是采集臉部信息進行開門，試想一下，如果被采集的人左右轉臉幅度太大，攝像頭可能只采集到側臉信息，或者低頭抬頭幅度太大，攝像頭只能看到下巴或者頭頂。諸如此類的情況一旦發生，意味著采集信息的不完整，攝像頭采集到的是已經丟失了過多特征點的人臉，與門鎖內儲存的人臉三維信息相差甚遠，就會導致識別失敗。 一般來說，行業內的3D人臉方案商，對人臉姿態角度的限制都約在30°以內。一方面，在這個角度內可以獲取的人臉有效信息比較多，容易識別成功；另一方面，減少因為識別失敗引起的安全問題。 PS：各位親愛的朋友們，有什么關于智能鎖方面的問題記得后臺留言告訴我們哦，我們會從中抽取任意問題回答，比心~ |
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