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Dynamic Shadow Removal From Front Projection Displays, Christopher O. Jaynes
Dynamic Shadow Removal From Front Projection Displays, Christopher O. Jaynes
Computer Science Faculty Patents
A technique and system for detecting a radiometric variation/artifacts of a front-projected dynamic display region under observation by at least one camera. The display is comprised of one or more images projected from one or more of a plurality of projectors; the system is preferably calibrated by using a projective relationship. A predicted image of the display region by the camera is constructed using frame-buffer information from each projector contributing to the display, which has been geometrically transformed for the camera and its relative image intensity adjusted. A detectable difference between a predicted image and the display region under observation …
Monitoring And Correction Of Geometric Distortion In Projected Displays, Christopher O. Jaynes, Robert M. Steele
Monitoring And Correction Of Geometric Distortion In Projected Displays, Christopher O. Jaynes, Robert M. Steele
Computer Science Faculty Patents
A technique, and associated system and computer executable program code on a computer readable storage medium, for automatically correcting distortion of a front-projected display under observation by at least one camera. The technique may be employed in a myriad of front-projected display environments, e.g., single or multiple projectors and cameras are used. The technique includes: observing a first image, projected from at least one projector, comprising at least one target distribution of light intensities; for each conglomeration of white pixels of a difference image, compute a bounding box comprising a corresponding conglomeration of pixels in a framebuffer information of the …
Super-Resolution Overlay In Multi-Projector Displays, Christopher O. Jaynes, Divya T. Ramakrishnan
Super-Resolution Overlay In Multi-Projector Displays, Christopher O. Jaynes, Divya T. Ramakrishnan
Computer Science Faculty Patents
A technique, associated system and computer executable program code, for projecting a superimposed image onto a target display surface under observation of one or more cameras. A projective relationship between each projector being used and the target display surface is determined using a suitable calibration technique. A component image for each projector is then estimated using the information from the calibration, and represented in the frequency domain. Each component image is estimated by: Using the projective relationship, determine a set of sub-sampled, regionally shifted images, represented in the frequency domain; each component image is then composed of a respective set …