计算机科学

计算机科学 ›› 2018, Vol. 45 ›› Issue (3): 58-62.doi: 10.11896/j.issn.1002-137X.2018.03.009

• 第十届全国几何设计与计算学术会议 • 上一篇    下一篇

基于色度一致性的室外场景光照参数估计

张锐,韩慧健,梁秀霞,方靖,张彩明   

  1. 山东财经大学计算机科学与技术学院 济南250014;山东省信息可视化与计算经济工程技术研究中心 济南250014,山东财经大学计算机科学与技术学院 济南250014;山东省信息可视化与计算经济工程技术研究中心 济南250014,山东财经大学计算机科学与技术学院 济南250014;山东省信息可视化与计算经济工程技术研究中心 济南250014,山东财经大学计算机科学与技术学院 济南250014,山东财经大学计算机科学与技术学院 济南250014;山东大学计算机科学与技术学院 济南250101
  • 出版日期:2018-03-15 发布日期:2018-11-13
  • 基金资助:
    本文受国家自然科学基金项目(61303089,61472221,61272431,61303090)资助

Illumination Parameter Estimation of Outdoor Scene Using Chromaticity Consistency

ZHANG Rui, HAN Hui-jian, LIANG Xiu-xia, FANG Jing and ZHANG Cai-ming   

  • Online:2018-03-15 Published:2018-11-13

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摘要： 针对不同天气情况下在同一太阳方位拍摄的室外场景图像,提出了一种基于色度一致性的光照参数估计算法。该算法基于太阳光与天空光基图像分解理论,利用色度一致性这一约束条件求解太阳光和天空光的光照系数；并利用光照色度校正模型对基图像进行光照色度校正,从而得到更准确的光照参数。 实验结果表明,所提算法是有效且正确的,根据基图像和光照系数可以准确重构原图像,从而实现虚拟物体与真实场景的无缝融合。

关键词: 光照估计,色度一致性,色度校正模型,基图像

Abstract: For the outdoor scene images shot in the same solar azimuth under different weather conditions,this paper proposed an algorithm to estimate the illumination parameters using the chromaticity consistency.In this algorithm,based on the basis image decomposition,the chromaticity consistency is used to solve the illumination parameters of outdoor scenes.And then,according to the illumination chromaticity correction model,the illumination parameters are optimized.The experimental results show that the algorithm is effective and correct,and can accurately reconstruct the origi-nal image according to the base images and the illumination parameters,so as to realize the seamless integration between the virtual object and the real scene.

Key words: Illumination estimation,Chromaticity consistency,Chromaticity correction model,Basis images

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