thanks for the help it worked. I have been struggling with the file format for example firstReconstruction in rtf examples. I managed to build it.
it seems that I have to run it as follows:
FirstReconstruction.exe outputimage.xxx outputgeometry.rtk
question: what would be the format for output image.xxx?
secondly is that correct to set geometry file format to .rtk?
thirdly, it seems that the output image is a 3D image I assume! but how to view this image?