Curvature and Perspective

There are various reasons you might want to perform a perspective transform on an image, but in the case of road images taken from our front-facing camera on a car, why are we interested in doing a perspective transform?

Because it is more straightforward to take a gradient on a top-down view of the road image.

Because ultimately we want to measure the curvature of the lines, and to do that, we need to transform to a top-down view.

Because transforming the perspective removes the effect of curvature from our measurement.

Because transforming the perspective removes the effect of shadows and color differences from our road image.

SOLUTION:

Because ultimately we want to measure the curvature of the lines, and to do that, we need to transform to a top-down view.

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