CS 381 HW1--Camera Basics

Here's a cross-section (along the x==0 plane) of a simple 3D projection setup. The camera's aperture is centered at the origin, facing in the +z direction. It's looking at an object at coordinates (x,y,z), where x is zero and z is positive. The image is focused onto a film plane at z==-1, one unit away from the origin, where the image sits at coordinate Yw (Y in the film window).

Straight lines described above

The question is, what's the equation for Yw in terms of y and z? Please write the mathematical equation on a sheet of paper. Due in class on Tuesday, September 5th.

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