Transforming captured co-ordinates into screen co-ordinates

Question

I think this is probably a simple maths question but I have no idea what\'s going on right now.

I\'m capturing the positions of \"markers\" on a webcam and I have a

Answer 1

Due to perspective effects linear or even bilinear transformations may not be accurate enough. Look at correct perspective mapping and more from google on this phrase, may be this is what you need...