Design and Testing of an Underwater Microscopewith Variable Objective Lens for the Study of Benthic Communities

• 作者: Kamran Shahani Hong Song Syed Raza Mehdi Awakash Sharma Ghulam Tunio Junaidullah Qureshi Noor Kalhoro Nooruddin Khaskheli
• 来源期刊: 船舶与海洋工程学报（英文版）
• 年，卷（期）: 2021,（1）
• 页码范围: 170-178
• 页数: 9页
• 语种: 英文

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 research. To meet this requirement, an underwater microscope with an electrically controlled variable lens was designed and tested. The captured microscopic images of corals, sediments, planktons, and microplastic revealed their physical, biological, and morphological characteristics. Further studies of the images also revealed the growth, degradation, and bleaching patterns of corals; the presence of plankton communities; and the types of microplastics. The imaging performance is majorly influenced by the choice of lenses, camera selection, and lighting method. Image dehazing, global saturation masks, and image histograms were used to extract the image features. Fundamental experimental proof was obtained with micro-scale images of corals, sediments, planktons, and microplastic at different magnifications. The designed underwater microscope can provide relevant new insights into the observation and detection of the future conditions of aquatic ecosystems.