From Digital Photogrammetry Workstation(DPW) to Digital Photogrammetry Grid(DPGrid)

The existing problems of current digital photogrammetry workstation(DPW) are pointed,current development of digital photogrammetry theory is summarized,including the independency rule of image matching and observations,close ranging photogrammetry with multiple bases and the concept of general points.Combining the progress of digital photogrammetry hardware and theory,the ideal,that DPW to digital photogrammetry grid(DPGrid),is educed.The structure and function of a DPGrid are explained,including cluster processing system based on blade computer,fully seam-less mapping system based on network and their features.The relationship of digital photogrammetry and computer vision is discussed too.Moreover acquired achievement of DPGrid is introduced.The conclusion,that "digital photogrammetry is relative young and fast growing field",is emphasized.