Research On Bubble Image Analysis And Reconstruction Based On Cold Spring Simulation System

The study of cold seep activity is an important part of modern ocean research.Obtaining the characteristic parameters of submarine cold seep gas has important research significance in natural gas hydrate exploration,ecological environment research and global greenhouse effect response.The detection of cold spring activity is based on the different acoustic attenuation characteristics and acoustic amplitude of cold spring bubbles with different shapes and densities.The characteristic parameters of cold spring bubbles obtained by simulation experiments provide a theoretical model for cold spring acoustic detection.It is very important to improve the accuracy of acoustic detection.Based on the overflow characteristics of submarine cold springs,a simulation observation system for submarine cold springs is developed.Obtain simulated cold spring bubble images under different working conditions.The simulation observation system is divided into three modules.They are simulated bubble generation modules that accurately adjust the gas flow rate.A bubble observation module that synchronously photographs bubbles through an orthogonally placed binocular camera.The energy and control module is responsible for the operation and power supply of the whole system.Each module cooperates to complete the generation and observation of simulated bubbles.It provides a cold spring bubble image more in line with the real environment for the analysis of bubble characteristics.In order to realize the accurate extraction of simulated cold spring bubble feature information.The bubble image is processed by digital image processing methods such as filtering denoising,image enhancement,threshold processing and edge detection.Excluding the interference information in the bubble image,a useful image that can effectively extract the bubble feature information is obtained.Preprocessing work is done for the subsequent simulation of two-dimensional characteristic parameter extraction and three-dimensional data analysis of cold spring bubbles.Based on 2D bubble image information.By using digital processing technology,extract the motion characteristic parameter information and morphological characteristic parameter information of simulated bubbles separately.The effects of gas flow rate,nozzle diameter,force and temperature on bubble characteristic parameters were analyzed.A slice method for 3D reconstruction is proposed.The double-view bubble images are sliced by MATLAB software.The shape of each slice is equivalent to an elliptical cylinder,and the long axis and short axis of the elliptical cylinder are obtained respectively.The three-dimensional model of simulated bubbles is restored by stacking thin elliptical slices.Based on the three-dimensional reconstruction model,the three-dimensional characteristic parameters of the simulated bubbles are extracted.More accurate bubble characteristic information is obtained.The realization of this method provides a efficient and simple research method and idea for the study of bubble characteristics of submarine cold springs.It provides more accurate theoretical model data for acoustic detection of submarine cold seeps.