Algorithm of terrain visualization by using scanning terrain map as texture ; 2 . the simplified algorithm of view - point related multi - resolution terrain and the extended algorithm while its data are distributed like a band ; 3 . the visual application of spatial query technique in the field of vector elements overlapping and the simulative evolution of flood 在諸多技術(shù)中,結(jié)合防汛決策支持系統(tǒng)對可視化的具體要求,本文重點論述了:以掃描地形圖為紋理的地形可視化算法;基于幾何模型的視點相關(guān)多分辨率地形簡化算法及其在數(shù)據(jù)呈帶狀分布情況下的擴展算法;空間查詢技術(shù)在矢量要素疊加和洪水模擬演進方面的可視化應(yīng)用。