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门锁坏了？为什么3D人脸识别歪个头就认证失败？ 发布日期：2022-04-27 10:53:00浏览量：1291 最近，有朋友在后台给我们反馈，家里的3D人脸识别智能锁歪个头就无法识别，还提出“是不是智能锁坏了”的疑问。对于这个疑问，小玥觉得必须给大家科普下，这其实与人脸姿态角度有关系的。 首先我们来个知识科普，在三维空间中人脸角度主要分成三种，分别是偏航角（yaw）、俯仰角（pitch）、翻滚角（roll），这三种角度分别对应的是左右转动、上下转动、侧面转动，行业内一般称之为人脸姿态角度。 3D人脸识别主要是采集脸部信息进行开门，试想一下，如果被采集的人左右转脸幅度太大，摄像头可能只采集到侧脸信息，或者低头抬头幅度太大，摄像头只能看到下巴或者头顶。诸如此类的情况一旦发生，意味着采集信息的不完整，摄像头采集到的是已经丢失了过多特征点的人脸，与门锁内储存的人脸三维信息相差甚远，就会导致识别失败。 一般来说，行业内的3D人脸方案商，对人脸姿态角度的限制都约在30°以内。一方面，在这个角度内可以获取的人脸有效信息比较多，容易识别成功；另一方面，减少因为识别失败引起的安全问题。 PS：各位亲爱的朋友们，有什么关于智能锁方面的问题记得后台留言告诉我们哦，我们会从中抽取任意问题回答，比心~ |
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