真實感海底地形三維可視化實現(xiàn)技術(shù)
發(fā)布時間：2018-12-19 10:17
【摘要】：資源和環(huán)境是人類生存和發(fā)展的基本條件。海洋中蘊藏著各種豐富的資源。隨著陸地資源的日益短缺，沿海各國不斷加大對海洋環(huán)境的研究力度，更加重視對海洋——“藍色國土”的開發(fā)與利用，同時圍繞海島歸屬的爭端也日趨激烈，尤其是我國在東海和南海的方向與許多國家都有海上領(lǐng)土爭端的問題。 海底地形作為深海環(huán)境的基礎(chǔ)地理環(huán)境要素，對其進行逼真的模擬和再現(xiàn)，是人們對海底環(huán)境進行了解的基本手段和方法。真實的再現(xiàn)海底地形的主要特征及其可視化效果，對人類研究海洋環(huán)境、開發(fā)海洋資源、保護海洋環(huán)境、建設(shè)海底工程以及遂行海上作戰(zhàn)任務(wù)等方面有著巨大的現(xiàn)實意義。 真實感的海底地形三維可視化包括兩個方面：真實海底地形的可視化、真實海底環(huán)境效果的可視化。本文以VC++6.0平臺為基礎(chǔ)，通過運用OpenGL圖形庫，，構(gòu)建了真實海底地形的三維模型，實現(xiàn)了海底地形真實感效果的可視化。 1、分析了海底地形三維可視化的研究現(xiàn)狀，指出了目前海底地形三維可視化方面存在的問題：①針對海底地形建模方法的研究主要集中數(shù)據(jù)組織、管理和內(nèi)插算法優(yōu)化方面，對建模方法和內(nèi)插算法針對海底地形的適用性研究較少。②針對海底地形可視化真實感效果的研究較少。 2、介紹數(shù)字高程模型主要的構(gòu)建方法，通過實驗比較和分析了海底地形規(guī)則格網(wǎng)DEM和不規(guī)則三角網(wǎng)DEM的表現(xiàn)效果，決定采用規(guī)則格網(wǎng)的海底地形DEM構(gòu)建方法。 3、分析和比較了目前常見的幾種內(nèi)插方法，綜合考慮本文所使用的離散水深點數(shù)據(jù)的特點，決定采用八方向反距離加權(quán)內(nèi)插算法構(gòu)建海底地形規(guī)則格網(wǎng)DEM。 4、介紹和分析了OpenGL圖形庫的工作原理和流程，并基于OpenGL實現(xiàn)了海底地形的三維可視化，以及分層設(shè)色、光照、明暗、霧化等真實感效果。 5、設(shè)計了真實感海底地形三維可視化系統(tǒng)框架結(jié)構(gòu)，完成了系統(tǒng)的開發(fā)，并實現(xiàn)了系統(tǒng)的人機交互功能和分析應(yīng)用功能。
[Abstract]:Resources and environment are the basic conditions for human survival and development. The ocean is rich in all kinds of resources. With the increasing shortage of land resources, coastal countries have been increasing their research on marine environment, paying more attention to the development and utilization of the ocean-Blue Land, and at the same time, the disputes over the ownership of the islands are becoming increasingly fierce. In particular, China has maritime territorial disputes with many countries in the East China Sea and the South China Sea. As the basic geographical environment element of deep-sea environment, submarine topography is a basic means and method for people to understand the seabed environment by simulating and reproducing it lifelike. It is of great practical significance for human beings to study the marine environment, develop marine resources, protect marine environment, construct submarine engineering and carry out maritime combat tasks. The 3D visualization of realistic submarine terrain includes two aspects: the visualization of real submarine topography and the visualization of real seabed environmental effects. Based on the VC 6.0 platform, the 3D model of the real submarine terrain is constructed by using the OpenGL graphics library, and the visualization of the realistic effect of the submarine terrain is realized. 1. The present situation of 3D visualization of submarine terrain is analyzed, and the existing problems in 3D visualization of submarine terrain are pointed out. 1 the research on modeling method of submarine terrain mainly focuses on data organization, management and optimization of interpolation algorithm. There are few researches on the applicability of modeling methods and interpolation algorithms for submarine topography. 2. The main construction methods of digital elevation model are introduced. The performance of DEM and DEM are compared and analyzed experimentally, and the method of constructing DEM of seabed terrain with regular grid is adopted. 3. Several common interpolation methods are analyzed and compared. Considering the characteristics of the discrete depth data used in this paper, it is decided to use the octagonal inverse distance weighted interpolation algorithm to construct the seabed terrain rule grid DEM.. 4. The working principle and flow of OpenGL graphics library are introduced and analyzed, and the 3D visualization of submarine terrain is realized based on OpenGL, and the realistic effects such as layered color, illumination, light and atomization are also introduced. 5. The frame structure of the 3D visualization system of realistic submarine terrain is designed, the system is developed, and the man-machine interaction function and the analysis and application function of the system are realized.
【學位授予單位】：解放軍信息工程大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P229.1
本文編號：2386783
[Abstract]:Resources and environment are the basic conditions for human survival and development. The ocean is rich in all kinds of resources. With the increasing shortage of land resources, coastal countries have been increasing their research on marine environment, paying more attention to the development and utilization of the ocean-Blue Land, and at the same time, the disputes over the ownership of the islands are becoming increasingly fierce. In particular, China has maritime territorial disputes with many countries in the East China Sea and the South China Sea. As the basic geographical environment element of deep-sea environment, submarine topography is a basic means and method for people to understand the seabed environment by simulating and reproducing it lifelike. It is of great practical significance for human beings to study the marine environment, develop marine resources, protect marine environment, construct submarine engineering and carry out maritime combat tasks. The 3D visualization of realistic submarine terrain includes two aspects: the visualization of real submarine topography and the visualization of real seabed environmental effects. Based on the VC 6.0 platform, the 3D model of the real submarine terrain is constructed by using the OpenGL graphics library, and the visualization of the realistic effect of the submarine terrain is realized. 1. The present situation of 3D visualization of submarine terrain is analyzed, and the existing problems in 3D visualization of submarine terrain are pointed out. 1 the research on modeling method of submarine terrain mainly focuses on data organization, management and optimization of interpolation algorithm. There are few researches on the applicability of modeling methods and interpolation algorithms for submarine topography. 2. The main construction methods of digital elevation model are introduced. The performance of DEM and DEM are compared and analyzed experimentally, and the method of constructing DEM of seabed terrain with regular grid is adopted. 3. Several common interpolation methods are analyzed and compared. Considering the characteristics of the discrete depth data used in this paper, it is decided to use the octagonal inverse distance weighted interpolation algorithm to construct the seabed terrain rule grid DEM.. 4. The working principle and flow of OpenGL graphics library are introduced and analyzed, and the 3D visualization of submarine terrain is realized based on OpenGL, and the realistic effects such as layered color, illumination, light and atomization are also introduced. 5. The frame structure of the 3D visualization system of realistic submarine terrain is designed, the system is developed, and the man-machine interaction function and the analysis and application function of the system are realized.
【學位授予單位】：解放軍信息工程大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P229.1
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本文編號：2386783
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