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本文讨论了纹影法的刀口位置,指出用一维刀口不能有效地显示二维位相梯度.在点光源情况下改用直角刀口就可对位相物进行二维显示。
In this paper, we discuss the blade position of the smear method, and point out that the 2D phase gradient can not be displayed effectively by one-dimensional cutting edge.