基于球带幕的多通道投影拼接融合技术研究  

Image Mosaic and Fusion Technology of Multi-channel Projection Based on Spherical Screen

作　　者：刘剑超 林亚军 汪节 王伟 孔庆波 LIU Jianchao;LIN Yajun;WANG Jie;WANG Wei;KONG Qingbo(Flight Simulation Training Center of Trainer,Naval Aviation University,Huludao 125001,China)

机构地区：[1]海军航空大学教练机模拟训练中心,辽宁葫芦岛125001

出　　处：《电光与控制》2020年第5期112-115,共4页Electronics Optics & Control

摘　　要：为满足飞行模拟训练需求,建立逼真的视景仿真环境,需要对多通道投影进行拼接融合,现有技术多依赖于投影机本身硬件支持。为降低硬件环境要求,对现有的拼接算法进行研究和改进,设计出合理高效的算法步骤,将场景绘制模块生成的图像进行曲面生成和投影变换,使其经过投影机投射到球带幕上后刚好可以生成正常的图像,将位于多个投影机的投影区域重合部分的画面亮度做由明到暗的过渡处理,使得不同投影机生成的图像可以平滑过渡。经过验证,拼接融合系统处理后的图像,可以实现多通道投影在球带幕上的无缝显示效果,达到了预期指标要求。In order to satisfy the demand of flight simulation training and establish a realistic visual simulation environment,it is necessary to make image mosaic and fusion to multi-channel projection.Most of the existing technologies depend on the hardware support of the projector itself.In order to lower the requirement to the hardware environment,we studied the existing mosaic algorithms and made some improvements.A more reasonable and efficient method was used to accomplish curved-surface generation and projection transformation to the images produced by scene rendering module,thus to make the image projected onto the spherical screen through the projector be a normal image.Then,transition processing was made from bright to dark to the brightness of overlapped part of the images from several projectors,to make sure of the smooth transition of images of different projectors.The verification result showed that,the image processed by the mosaicing and fusion system can achieve a seamless display effect of multi-channel projection on the spherical screen,which achieves the expected qualification.

关 键 词：飞行模拟训练 视景仿真 曲面校正 拼接融合 色彩过渡 

分 类 号：V216.7[航空宇航科学与技术—航空宇航推进理论与工程] E926[军事—军事装备学]