18 August 1998 Comparing experiments of digital photography visiometer
Author Affiliations +
This paper reports a digital photography visiometer (DPV), an automatic digital photography visibility system, that can directly measure and monitor horizontal visibility during daytime through digital shooting. After shooting a scene of given black object and background via its CCD digital camera, the system can capture and transfer photographic images in the camera to a computer, as well as process the digital images and calculate the value of visibility. The formulas for calculating visibility with this method and analyzing the effect of non-black object on measured result are also given. And then the comparison of DPV observations with a lidar-visibility measurements and visual observations are carried out. The results show that the average deviation and relative average deviation of visibility acquired by DPV from lidar-visibility measurements are respectively within 0.927 km (and 0.26 km) and 6.68 percent (and 7.99 percent).
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
XingSheng Xie, ShangChang Tao, XiuJi Zhou, "Comparing experiments of digital photography visiometer", Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); doi: 10.1117/12.317726; https://doi.org/10.1117/12.317726


Back to Top