第五章 結論與未來方向
5.2 未來方向
針對本論文所提出的基於多層次精細度的預先計算區域輻射轉換方 法，未來有幾個可能的發展方向：
1. 在建立階層式網格模型的過程中，我們使用二次方誤差評量決定邊 線摺疊的順序。由於這個方法是基於幾何上的考量來決定順序，未來可以 將光效結果納入考量之中。
2. 我們的光源相依還原基準是以物體表面的幾何特性決定兩頂點的 光效差異程度，由於我們使用球諧係數來進行顯像，或許可以基於球諧係 數的考量改善光源相依還原基準。
3. 由於預先計算區域輻射轉換是以頂點作為計算基礎，為了表現圓滑 的陰影輪廓，地表必須畫分成極細小的多邊形。未來或許可以不光只在頂 點上進行計算，甚至在多邊形內部也能進行預先計算區域輻射轉換。
4. 未來可以發展出根據場景特性自動調整幾何誤差比重的方法，適應 場景的變化，以方便推廣於更多的應用之中。
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