Labels:book | daily | reckoner | sky OCR: Sensors which map the brightness infom ation 1na three dimensional scene onto atwo- dimensional image necessarily lose infomation during the mapping namely the depth of points in the scene Effects of Perspective In pinhole camera (which is an approximation to a traditional camera), this mapping 15 called the perspective transform. Under the perspecti ive trans formation, parallel lines in the image converge to point at infinity classic ex ample of this 1c the famili ar view down railroad track. In the sene the tracks are parallel vet in the projection they converge t.o point on the horizon. In the ex ample image 3D World the road lines converge to two different points, Yet in many cases like this one it. 1S difficult to determine where the road surface actu ally changes directi on. The per ...
