ABSTRACT
Guo, G., 2019. Video image acquisition technology of underwater vehicle based on 3D sensor. In: Hoang, A.T. and Aqeel Ashraf, M. (eds.), Research, Monitoring, and Engineering of Coastal, Port, and Marine Systems. Journal of Coastal Research, Special Issue No. 97, pp. 112–121.
The video image acquisition method of underwater vehicle based on the three-dimensional sensor is proposed to further probe ocean information. The underwater vehicle uses the CMOS three-dimensional sensor to capture underwater video images. The CMOS three-dimensional sensor designs the hardware structure of the node by softening the hardware function, and controls the mode configuration of the CMOS three-dimensional sensor by using the CCI interface. The bilinear interpolation algorithm is used to implement upsampling of CMOS three-dimensional sensors to improve image resolution. The OpenCV calibration algorithm is used to calibrate CMOS 3D sensor parameters and analyze the errors. Then, the underwater video images are acquired by the DCS-ULM algorithm. The experimental results show that the internal and external parameter errors of the proposed video image acquisition method are less than 10%. This indicates the proposed method can significantly improve the accuracy of underwater video image acquisition and effectively extend the life cycle of the three-dimensional sensor nodes underwater.
