Method for correction of position location indicator for a large area display system

摘要: In a large area display system, multiple persons may work together with input devices for supplying and receiving information in an interactive system single display. The comprises screen wherein computer generated is projected upon one side of the screen, users interact from opposite screen. Data coordinates device corresponding to pseudo image sensed by subsystem electronics are provided controlling computer. data normalized variations due frequency dependence electronic drift. looked up calibration table account distortion detection electronics. Screen pixel locations on found interpolation From table. prepared off-line, based bicubic spline interpolating function which then compressed using delta compression scheme. During on-line operation looked-up directly jitter smoothed provide smooth path response closely conforming original locations. smoothing method uses exponential magnitude change position input.