Geometric transformation module for determining the area of ​​circular objects from square capture frames

Abstract

Device for determining the area of ​​a circular object in an optical sensor system, comprising: an image sensor configured to detect a square bounding box with side length a around the circular object; and a computing unit coupled to the image sensor, configured to directly calculate the area A2 of a circle inscribed in the bounding box from the side length a according to A2=πa24, characterized in that the computing unit determines the area A2 without separately determining a radius, without contour recognition and without edge analysis of the circular object.