Japan has developed a new way to accurately identify pedestrians with on-board sensors

Ritsumeiguanuniversityandmitsubishielectrichavedevelopedanewinfraredsensortechnologythatcanaccuratelydistinguishpedestriansfromroadsandbuildings.Byapplyingspecialmicro-processingtothesurfaceofthesenso...

　　Ritsumeiguan university and mitsubishi electric have developed a new infrared sensor technology that can accurately distinguish pedestrians from roads and buildings. By applying special micro-processing to the surface of the sensor chip, artificial objects can be distinguished from other objects by the presence or absence of polarized light, rather than by the use of optical filters. What can detect polarized light are "plasma absorbers" that selectively absorb light deflected in a particular direction. The absorber is a muon class periodic concave and convex Au film, which can selectively absorb light of a specific periodic wavelength. This time, the concave and convex holes are designed as elliptic holes, so that the absorption characteristics only exist in the short diameter direction. Even if a polarized light is incident, as long as it is not consistent with the direction of the short diameter, it will not be absorbed and thus will not be detected by the sensor.