摘要
本文提出基于多视点多曝光图像的立体高动态范围图像合成算法。首先,考虑多视点多曝光图像以及相机响应函数曲线的特性,提出一种虚拟曝光图像绘制算法,将不同曝光的图像绘制到同一视点;然后,为了使绘制曝光图像保留更多细节和结构,需要对绘制虚拟曝光图像进行空洞填补及边缘修复,故引入了边缘差值掩膜图,对图像边缘信息进行校正平滑处理;最后利用绘制的虚拟曝光图像合成立体高动态范围图像。实验结果表明,获得的绘制曝光图像与参考曝光视点图像之间的结构相似性高达0.99以上,且合成的高动态范围图像质量高。
High dynamic range imaging typically rely on same-exposure images as inputs,while stereoscopic high dynamic range imaging using multi-view multi-exposure images.In this paper,a stereoscopic high dynamic range image synthesis algorithm based on multi view and multi-exposure images is proposed.Firstly,considering the characteristics of multi-view multi-exposure image and camera response function curve,a virtual exposure image rendering algorithm is proposed to render different exposure images to the same viewpoint.Then,in order to preserve more details and structure,it is necessary to fill the holes and repair the edges of the virtual exposure image,so the edge difference mask is introduced to correct and smooth the image edge information.Finally,the stereoscopic high dynamic range image is synthesized by using the virtual exposure image.The experimental results show that the structure similarity between the rendered exposure image and the reference exposure view image is over 0.99,and the synthesized high dynamic range image has high quality.
作者
徐雅丽
郁梅
陈恳
蒋刚毅
XU Ya-li;YU Mei;CHEN Ken;JIANG Gang-yi(Faculty of Information Science and Engineering,Ningbo University,Ningbo 315211,China;National Key Labof Software New Technology ,Nanjing University, Nanjing 210093,China)
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2019年第7期768-778,共11页
Journal of Optoelectronics·Laser
基金
国家自然科学基金项目(61671258,61871247)资助项目
关键词
多视点多曝光图像
绘制曝光图像
边缘差值掩膜
立体高动态范围图像
multi-view multi-exposure image
virtual exposure images
edge difference mask
stereoscopic high dynamic range image
