ortho-rectify needed

[Grass]

Hi 

I need to ortho-rectify several scanned aerial photographs.
I have tried i.rectify.blk but it seems to miss following programs:
i.ortho.control, i.ortho.initial, i.ortho.rectify and 
i.ortho.reference.

if anybody could tell me where I can find/get those programs I
would appreciate it.

thanks

Ron Store 				Ari Turkia
university of joensuu                   university of joensuu                   
faculty of forestry                     faculty of forestry

email: store at gisula1.joensuu.fi         email: turkia at cs.joensuu.fi