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Images as Light Projections

On: July 15, 2020

In: AI, Algorithms, Computer Vision, Image Formation

Exposing a sensor to a light – projects points that project to all the sensor – and so all locations on the sensor see light from all the points. Aperture(small hole) – seeing light from only one point(inverted and reduced). How big should the aperture be ? until diffraction happensContinue Reading

Coordinate System Modeling – Perspective Projection

On: May 12, 2018

In: Uncategorized

COP center of projection on origin. Using Similar Triangles – X,Y are projected to -d*X/Z, -d*Y/Z – which is the focal length. Homogeneous coordinates enable linear multiplication,and are invariant under scale. We use them to not worry about the division of z until after the heavy math and inContinue Reading