# Conical Anamorphic Projection of Photographic Images

Conical Anamorphic Projection of Photographic Images

This Demonstration explores the anamorphic projection of rasterized photographic images.

Each image is divided into a set of square cells. Each cell is then mapped as a polygon with the same color as the original cell in the photograph.

The conical anamorphic projection of a point at as seen from infinity in a conical mirror with opening angle and base radius 1 is given by the mapping .

(x,y)

θ

(x,y)+(x,y)

1-sec(θ)+-1

2

x

2

y

2

x

2

y

The central image is what you see in a conical mirror placed with its base covering the central black circle and the eye at infinity above the top of the cone. Without the mirror, the image is unrecognizable.