Let's say that we want to find the area of an ellipse with semi-axes a and b. OK, so that means an ellipse is just like a squished circle.
现在需要计算一个以a，b为半轴的椭圆的面积,其实椭圆就是一个被压扁的圆。
Instead of using point sampling, elliptical filtering USES an area (an ellipse) to perform an image lookup.
替代了点采样，椭圆形过滤使用一个椭圆形区域来执行图像检查。
In this paper, an area formula of polygon of inscribed or circumscribed ellipse is presented and the condition that the area reaches maximum value or minimum value is discussed.
提出了椭园内接或外切多边形面积公式，并讨论了其面积达到最大值与最小值的条件。
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