RS204
RS204
一個球形表面反射光源的方式與平面物體不近相同。物體表面的形狀越復(fù)雜,其表面的光源變化也隨之而復(fù)雜。
對應(yīng)一個拋光的鏡面表面,光源需要在不同的角度照射。從不同角度照射可以減小光影。
光源均勻性
不均勻的光會造成不均勻的反射。均勻關(guān)系到三個方面。第一,對于視野,在攝像頭視野范圍部分應(yīng)該是均勻的。
簡單的說,圖像中暗的區(qū)域就是缺少反射光,而亮點就是此處反射太強了。不均勻的光會使視野范圍內(nèi)部分區(qū)域的光比其他區(qū)域多。從而造成物體表面反射不均勻(假設(shè)物體表面的對光的反射是相同的)。
均勻的光源會補償物體表面的角度變化,即使物體表面的幾何形狀不同,光源在各部分的反射也是均勻的。
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