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In the early days of personal imaging, a specific location was selected from which a measurement space or the like was constructed. From this single vantage point, a collection of differently illuminated/exposed images was constructed using the wearable computer and associated illumination apparatus. However, this approach was often facilitated by transmitting images from a specific location (base station) back to the wearable computer, and vice versa. Thus, when the author developed the eyeglass-based computer display/camera system, it was natural to exchange viewpoints with another person (., the person operating the base station) | Intelligent Image Processing. Steve Mann Copyright 2002 John Wiley Sons Inc. ISBNs 0-471-40637-6 Hardback 0-471-22163-5 Electronic 6 VIDEOORBITS THE PROJECTIVE GEOMETRY RENAISSANCE In the early days of personal imaging a specific location was selected from which a measurement space or the like was constructed. From this single vantage point a collection of differently illuminated exposed images was constructed using the wearable computer and associated illumination apparatus. However this approach was often facilitated by transmitting images from a specific location base station back to the wearable computer and vice versa. Thus when the author developed the eyeglass-based computer display camera system it was natural to exchange viewpoints with another person . the person operating the base station . This mode of operation seeing eye-to-eye made the notion of perspective a critical factor with projective geometry at the heart of personal imaging. Personal imaging situates the camera such that it provides a unique first-person perspective. In the case of the eyeglass-mounted camera the machine captures the world from the same perspective as its host human . In this chapter we will consider results of a new algorithm of projective geometry invented for such applications as painting environmental maps by looking around wearable tetherless computer-mediated reality the new genre of personal documentary that arises from this mediated reality and the creation of a collective adiabatic intelligence arising from shared mediated-reality environments. VIDEOORBITS Direct featureless methods are presented for estimating the 8 parameters of an exact projective homographic coordinate transformation to register pairs of images together with the application of seamlessly combining a plurality of images of the same scene. The result is a single image or new image sequence 233 234 VIDEOORBITS THE PROJECTIVE GEOMETRY RENAISSANCE of greater resolution or spatial extent. The .