海军航空大学教练机模拟训练中心, 辽宁 葫芦岛 125001
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。
飞行模拟训练 视景仿真 曲面校正 拼接融合 色彩过渡 flight simulation training visual simulation curved-surface correction mosaicing and fusion color transition
Author Affiliations
Abstract
1 School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
2 Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, Fujian Normal University, Fuzhou 350007
A new method based on gray-natural logarithm ratio bilateral filtering is presented for image smoothing in this work. A new gray-natural logarithm ratio range filter kernel, leading to adaptive magnitude from image gray distinction information, is pointed out for the bilateral filtering. The new method can not only well restrain noise but also keep much more weak edges and details of an image, and preserve the original color transition of color images. Experimental results show the effectiveness for image denoising with our method.
图像平滑 双边滤波 细节保持 色彩过渡 图像去噪 100.0100 Image processing 110.4280 Noise in imaging systems Chinese Optics Letters
2008, 6(9): 648
