Hi All,
I've read in the book "Learning OpenCV" by O'REILLY press and from "OpenCV 2 Computer Vision Application Programming Cookbook" by Robert Laganière (PACKT publishing) that when calibrating camera from chessboard pattern they use for 3D world coordinates the cornder indices with z = 0.
for example suppose chesboard cornders in vertical dimension is 4 and horizontal dimension 5 so the corresponding 3D world coordinates for calibration become:
(0,0,0), (0,1,0), (0,2,0),(0,3,0), (0,4,0), (1,0,0),(1,1,0),(1,2,0)...and so on. I understand we we can pick Z= 0 but I dont understand the one unit for each cornder coordinates I mean what if each sqaure in my image is say for example 44 cm? How does it reflects in the above calibration process?
Thank u in advance