My finger in front of cell phone cameras will detect your heart rate?
Measuring heart rate-mobile phone, cell phone cameras-IT news My finger in front of cell phone cameras will detect your heart rate?
Abstract: the finger in front of the cell phone camera and Flash are able to detect your heart rate?
Q: my finger in front of the cell phone camera and Flash are able to detect your heart rate?
Answer: as represented by the bracelet to wear the device gradually became popular, smart device health functions were gradually more and more people accept it. Through features such as wear measurement device measuring heart rate, exercise and practical, but, after all, need more than one device, therefore, integrate smart mobile health applications in the most recent batch of flagship models appeared with increasing frequency.
Case study of Samsung's latest Galaxy S5, iPhone adds heart rate sensing device, can be used to detect the user's heart rate. Though gimmicky sounds quite novel, but similar functionality in the iPhone application passed such intelligent machines can be realized. Specific operational procedures are: open the software, and then placed his hand on the camera, after a period of time measurement, heart rate information for the user he was presented.
The principle of operation is that when you open the software, Flash phones will also be opened automatically, when the user put his finger on the cameras, fingertip blood vessels under the skin due to blood pressure, and fingers the were lights brightness (red depth) will have a slight change. This process allows the sensor captured. Capillaries throb through the picture reflected cyclical changes in luminosity.
Through this method, heartbeat frequency will be clearly recorded. Through comparison with professional equipment, this measurement is of considerable accuracy. To users personal health exercise, therefore, is quite sufficient. But then again, then health high-tech detection methods, accurate measurement of the heartbeat mechanism, nor directly to avoid disease and even improve physical fitness, so I hope everyone has a test body functions at the same time, taken to preserve good health.
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手指放在手机摄像头前能检测心率？ - 手机测心率,手机摄像头 - IT资讯
手指放在手机摄像头前能检测心率？
摘要：手指放在手机摄像头和闪光灯前为何能检测心率？
问：手指放在手机摄像头和闪光灯前为何能检测心率？
答：从以手环为代表的可穿戴设备逐渐走红，智能设备的健康领域功能逐渐被越来越多的人接受。通过穿戴设备测量心跳、测量运动量等功能虽然实用，不过毕竟需要多戴一个设备，因此，整合在智能手机中的健康类应用也在最近一批旗舰机型中出现的频率越来越高。
以三星最新的Galaxy S5为例，这款手机新增了心率传感仪，可以用于检测用户的心跳频率。虽然噱头听起来十分新颖，不过类似的功能在iPhone等智能机型中早已通过应用得以实现。具体的操作过程是：打开相应软件，然后将手放置在摄像头上，经过一段时间的测量，用户的心跳频率信息就得意被呈现出来。
这个操作过程的原理是，当打开软件时，手机的闪光灯也会被自动打开，用户将手指放在摄像头上时，指尖皮下血管由于有血液被压入，被光源照射的手指亮度（红色的深度）会有轻微的变化。这个过程可以凭借感光元件捕捉到。这样毛细血管的搏动就能通过画面明度的周期性变化反映出来。
通过这样的方法，心跳频率就会被清晰地记录下来。经过与专业仪器的比对，这种测量方法还是具有相当的准确性的。因此对于用户个人健康锻炼来说，已然相当够用。不过话说回来，再高科技的检测健康方法，再准确的心跳测量机制，也无法直接避免疾病，甚至是提高体质，所以希望在大家拥有检测身体机能的同时，也注意维护身体健康。
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