基于虚拟曝光图像的立体高动态范围图像合成算法

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。

Stereoscopic high dynamic range image synthesis using virtual exposure images

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 stereos copic high dynamic range image synthesis algorithm based on multi view and multi-exposure images is proposed.Firstly,c onsidering the characteristics of multi-view multi-exposure image and camera response function curve,a virtual exposure ima ge rendering algorithm is proposed to render different exposure images to the same viewpoint.Then,in order to preser ve more details and structure,it is necessary to fill the holes and repair the edges of the virtual exposure image,so the edg e 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 betw een the rendered exposure image and the reference exposure view image is over 0.99,and the synthesized high dynamic ran ge image has high quality.