Computer display and input system comprised of a digital projector, camera and computer software for displaying images and detecting objects, user gestures and commands; computerized systems comprised of hardware, firmware and software for capturing coordinate inputs, namely, graphics, script, drawings and gestures, for interaction with a computer generated display utilizing a pen, stylus, finger or hand for use in classrooms, offices and meeting rooms and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail; coordinate input capturing devices, namely, interactive flat panel display screens for use with front projection, rear projection, and direct view displays for use in classrooms, offices and meeting rooms, and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail; absolute and relative position detection devices, namely, interactive flat panel display screens that utilize mechanically and optically based sensors which enable interaction with a digitizer, touch surface, touch panel, image display, or within a region of interest relative to a display for use in offices, meeting rooms, and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail; scalable position detection systems comprised of hardware, firmware and software with input generated via passive and active input tools; imaging systems comprised of hardware, firmware and software for capturing text and graphical images for use in offices, classrooms and meeting rooms, and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail; software for processing text and graphical images, and sharing and storing text and graphical images over a computer network for use in classrooms, offices, meeting rooms, and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail; software for sharing collaboration data and images locally or in geographically dispersed locations for use in offices, meeting rooms, and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail; software for viewing, editing, and sharing data and images locally or in geographically dispersed locations for use in classrooms, offices, meeting rooms, and other shared spaces across industries, namely, corporate, education, energy exploration, finance, healthcare, military and retail