摘要：目标物体的光谱反射率是水下光谱检测中重要的物理特性。复杂的水下环境,尤其是浑浊水体对光有较强的吸收与散射作用,增大了光谱探测的难度。文中在比对测量法的基础上,提出了引入黑、白板对测量结果进行矫正的光谱反射率探测方法。利用基于液晶可调谐滤光片的水下光谱成像仪快速稳定地采集多浊度、多光照条件下的光谱图像数据。数据分析结果证明了浊度增加会使得黑、白板的像素响应比值非线性增加,尤其在400~500 nm范围内。且基于黑白板的光谱反射率探测方法可以有效去除水体散射对光谱反射率重建的影响,使得不同浊度条件下得到的目标物光谱反射率最大绝对误差为5.3%。

摘要：Monitoring the ecology and physiology of corals,sediments,planktons,and microplastic at a suitable spatial resolution is of great importance in oceanic scientific *** meet this requirement,an underwater microscope with an electrically controlled variable lens was designed and *** captured microscopic images of corals,sediments,planktons,and microplastic revealed their physical,biological,and morphological *** studies of the images also revealed the growth,degradation,and bleaching patterns of corals;the presence of plankton communities;and the types of *** imaging performance is majorly influenced by the choice of lenses,camera selection,and lighting *** dehazing,global saturation masks,and image histograms were used to extract the image *** experimental proof was obtained with micro-scale images of corals,sediments,planktons,and microplastic at different *** designed underwater microscope can provide relevant new insights into the observation and detection of the future conditions of aquatic ecosystems.