Geometry Calibration for Multi-projector Display Automatically Based on the Feedback of Camera Algorithm
An algorithm is proposed for automatic geometric correction based on feedback of camera for multi-projector display system to address the problems exist in interactive manual geometric correction.The method is implemented in two steps.The first step performs an approximate correction which does not involve manual interaction.This step establishes geometric relations involving the screen space,camera space,projector buffer space,the original image and the sub-image by using pre-defined correction parameters.A pre-distortion is conducted on the original image with respect to the three relations to ensure the geometric continuity of the output image.To ensure the accuracy and robustness of the geometrical correction process,we proposed the second step to perform a further,accurate correction.The experimental results show that the proposed method is able to perform geometric correction quickly and accurately and fulfill the requirements for application.
multi-projector display system geometric correction camera calibration pre-distorting transformation
Meihua Chen Binwen Fan Huanyu Song
Key Laboratory of IOT Terminal Pivotal Technology Harbin Institute of Technology Shenzhen Graduate School Shenzhen,China
国际会议
厦门
英文
579-583
2014-08-19（万方平台首次上网日期，不代表论文的发表时间）