As we know a circle view at an angle appears as an(adsbygoogle = window.adsbygoogle || []).push({}); ellipse,

as you see in the picture, the center of the camera aim to the center of the circle ,

the angle between the circle axis and the camera is ө,

the azimuth between mojor axis(a) and the camera is ∞,

the rotation of the camera is €,

1. How to predict an orientation of major and minor axis and the ratio of its axes(b/a) ,if we only know these ө,∞,€ angle, regardless of size of ellipses

2. Is there any theory to apply this example?

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# How to predict the shape of the circle from any point of view

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