麻省理工学院发现了一个简单网络摄像头的另一种用途：测量脉搏率。它是一个小单元中的桌面视频聊天和心脏医师。
这项工作是研究生Ming-Zher POH研究的结果，这一切都与聪明的算法有关，该算法着眼于您的脸部网络摄像头饲料，并测量随着时间的推移，皮肤的细微亮度变化。POH发现，有可能通过使用公共域面部跟踪解决方案来计算相机上的人的脉搏率，然后在视频供稿中检查面部的不同颜色通道。最棘手的部分甚至不是脉搏检测，而是考虑到受试者在环境照明条件下自然移动的所有照明和颜色效果。克服这一点涉及调整语音识别系统中的算法，这些算法将特定声音与其他声音的房间隔离开来。
Ming-Zher的结果足够可靠，以至于它们产生的脉搏率在每分钟3次以内的脉冲率不超过FDA批准的脉冲测量设备报告的结果。而且由于该研究正在进行，我们可以预期，该系统的未来版本将被收紧。实际上，我们可能会期望的不仅仅是：科学表明，应该有可能跟踪呼吸率和您的血氧水平。有一天，即使是血压计算也是可能的。
该技术有什么用？Firstly the team behind it thinks it’s so cheap and reliable it’s the sort of thing that could easily be adapted into interactive furniture, like a bathroom mirror–the idea being that you’d get a quick’n’dirty heart health check-up as you brushed your teeth in the morning. Apart from the (potentially) heart-stopping horror that you may feel if enough of the display showed up in flashing red alerts, directing you to your GP rather than the office that morning, it sounds like a sensible idea.
But with future adaptations, companies could use it to monitor the stress levels of their employees in real time (especially interesting since the prototype system can already detect three people’s pulses simultaneously–meaning there may be law-and-order uses for this in crowd monitoring) and people with concerns about their heart health may benefit from an analytical feed displayed on their smartphone, as its webcam may also work with the tech.
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