设计了一种水下气泡高速成像探测系统实验方案,模拟深水中暗光的情况,采用主动成像方式,以532 nm绿光激光器作为光源,高速相机在距离气泡3 m远处进行拍摄,成像速率约为500 fps。在气泡后放置合作目标和没有合作目标的两种情况下进行实验,得到了气泡图像,对两种图像进行图像处理后发现,在有合作目标的情况下能得到更清晰、对比度更高的气泡运动图像。

An experimental research on underwater high-speed imaging detecting system is discussed in this paper. In low-light situations, a 532 nm green laser is used as the light source. A high-speed camera is employed to shoot the bubbles underwater. The high-speed camera is 3 m away from the bubbles. Imaging rate of the camera is about 500 fps. Under the conditions of with or without cooperative target behind the bubbles, by changing the rate of the high-speed camera, a lot of images of moving bubbles have been acquired. The bubbles are identified with edge detection techniques. It can be concluded that in the case of with a cooperative target behind the bubbles, the images are clearer and higher in contrast.