第五章 結論與建議
第二節 建議
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立 政 治 大 學
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N a tio na
l C h engchi U ni ve rs it y
第二節 建議
(1) 本研究的實驗方法首先為平面擬合，然而平面方程式的通式為𝐴𝑋 + 𝐵𝑌 + 𝐶𝑍 + 𝐷 = 0 的型式，此為較嚴謹描述平面的方程式，且能表達 任何型式的平面，本研究的出發點僅討論屋頂面並假設其為水平的平 面，所以將平面方程式簡化為 𝑧 = 𝑎𝑋 + 𝑏𝑌 + 𝑐 的型式，建議未來如 有相關研究應使用通式進行擬合，並比較兩式成果的差異。
(2) 有關模擬資料實驗中，本研究僅考慮含粗差的點雲皆位於平面範圍裡 面，且加入的粗差值皆相同。然而真實資料出現粗差的可能情況更為 複雜，例如地面點、鄰近地物的點，甚至是牆面點，粗差值不盡相同。
建議未來的研究應模擬多種粗差出現的位置及大小，以使模擬資料的 實驗更具說服力。
(3) 本研究以既有矩形建物之水平屋頂面執行空載光達系統點雲精度評估 實驗為例，雖然測試成果顯示，加入最小一乘法有助於提升李德仁法 的偵測能力。然而粗差偵測的方法，也就是穩健估值法，種類相當多，
例如 RANSAC。另外有關權迭代法的權函數設定也很多種，建議未 來的研究能夠進一步測試其他粗差偵測的方法，以完整說明不同穩健 估值法定位粗差的能力。
(4) 本研究發展之空載光達系統點雲半自動精度評估程序，為人工選取包 含矩形平屋頂面上之點雲，再以自動化偵測及剔除非屋頂點雲。建議
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