light

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

Radiometry – measurement of light (L) per unit area

On: May 10, 2019

In: AI, Autonomous Vehicles, Cars, Computer Vision, Drones

Radiance (L)- light carried by a ray from a light source. 1 Watt(W) = 1 Joule per second. A radian(r) is a measure of an angle, a steradian/ square radian[(sr) is a measure of a solid angle. e.g. In a cone it’s the amount of the radian area of the cone. IrradianceContinue Reading