About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Ruan Jian Xue Bao/Journal of Software
Paper
Automatic alignment of tiled displays for a desktop environment
Abstract
Tiling an array of projectors has become a practical way to construct a high resolution display system. Unfortunately, such high-resolution display systems have limited use because they require specially developed parallel visualization programs that run on a custom-designed parallel machine or a PC cluster. This paper presents an automatic alignment mechanism for arbitrarily tiled displays running a desktop environment so that users can run ordinary applications developed for desktop PCs. The system consists of three primary procedures: detecting projector misalignment, calculating corrective transformations, and real-time warping for the desktop environment. This allows users to run any 2D, 3D or video applications without modifications or special hardware support. Our experiments indicate that the system is able to achieve sub-pixel accuracy and achieve real-time warping with minimum system performance degradation.