CAJ | 학술논문

应用基于人眼视觉系统的高动态范围实时渲染技术处理交会对接仿真场景，可以为航天员手控交会对接训练提供高逼真度的电视图像。文中结合交会对接电视图像的特点，分析了交会对接航天员训练电视图像高动态范围实时渲染的关键技术；根据两航天器相对距离，将交会对接过程分为远、中和近3个距离段，采用S-curve算法、自适应对数算法和 Reinhard算法分别对每个距离段进行调和映射处理；改进了自适应对数算法和 Reinhard算法，并基于 GPU处理技术实现仿真电视图像的实时显示。实验结果表明，采用基于距离变化调整调和映射算法的方法处理交会对接仿真电视图像可以高逼真地模拟实录视频场景，为航天员手控交会对接训练提供了视景支持。
응용기우인안시각계통적고동태범위실시선염기술처리교회대접방진장경，가이위항천원수공교회대접훈련제공고핍진도적전시도상。문중결합교회대접전시도상적특점，분석료교회대접항천원훈련전시도상고동태범위실시선염적관건기술；근거량항천기상대거리，장교회대접과정분위원、중화근3개거리단，채용S-curve산법、자괄응대수산법화 Reinhard산법분별대매개거리단진행조화영사처리；개진료자괄응대수산법화 Reinhard산법，병기우 GPU처리기술실현방진전시도상적실시현시。실험결과표명，채용기우거리변화조정조화영사산법적방법처리교회대접방진전시도상가이고핍진지모의실록시빈장경，위항천원수공교회대접훈련제공료시경지지。
Real-time human visual system (HVS)-based high dynamic range (HDR) rendering technology pro-vides high fidelity, and therefore can be used in the simulated TV-graphics for the astronaut rendezvous and docking (RVD) training. In this paper, first, according to the characteristics of the real video recorded from outer space in RVD mission, we analyzed key HDR rendering techniques used in the simulated RVD scene for real-time astronaut’s training. Then, based on the distance between two spacecraft, we employed three tone map-ping operators (TMO), the S-curve algorithm, the adaptive logarithmic algorithm and the Reinhard algorithm to reproduce the tone of the RVD scene at the far distance, the middle distance and the near distance respectively. To ensure the real-time computation, we improved the adaptive logarithmic algorithm and the Reinhard algorithm, and accelerated them by GPUs. By comparing the simulated RVD scene with the real video recorded from outer space in RVD mission, our distance-based method has a high fidelity, and supports the astronaut RVD training.