报告题目：基于激光脉冲的透明物体3D门控成像与单像素成像 （3D Range Gated Imaging and single-pixel 3D imaging of transparent objects based on laser pulse）
This talk will present our research on 3D Range gated imaging and 3D transparent object detection with laser pulse. Range gated technique is a laser ranging approach which measures the round trip time between emitted laser pulse and the pulse echo reﬂected oﬀ the target. This approach has been applied in surveillance, military and oceanic etc. In recent years, range gated approach has also become more cost effective due to the development in lasers, sensors, signal processing and computer technology. Transparent object detection is a challenge due to the complex nature of light interacting with it. The characteristics of light such as absorption, transmission, reflection, and refraction in transparent objects makes its acquisition challenging. We introduce a fixed multi-viewpoint approach to ascertain the shape of transparent objects that obviates the rotation or movement of the object while imaging. Also, a simple and cost-effective experimental setup is presented that employs two single-pixel detectors and a Digital Micromirror Device (DMD) for imaging transparent objects by projecting binary patterns. By triangulating the light path from the object, surface shape is recovered neither considering the reflections nor the number of refractions. It can, therefore, handle transparent objects with a relatively complex shape with the unknown refractive index.
· Sensors doi: 10.3390/s17092031
· Sensors doi: 10.3390/s18030798
· Laser Physics Letters doi: 10.1088/1612-202X/aae216
· Applied Optics doi: 10.1364/AO.55.000153
· Applied Optics doi: 10.1364/AO.55.006588