| 基于色度一致性的室外场景光照参数估计 |
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| 引用本文： | 张锐,韩慧健,梁秀霞,方靖,张彩明. 基于色度一致性的室外场景光照参数估计[J]. 计算机科学, 2018, 45(3): 58-62, 82 |
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| 作者姓名： | 张锐 韩慧健 梁秀霞 方靖 张彩明 |
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| 作者单位： | 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 |
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| 基金项目： | 本文受国家自然科学基金项目(61303089,61472221,61272431,61303090)资助 |
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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。
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| 关 键 词： | 光照估计 色度一致性 色度校正模型 基图像 |
| 收稿时间： | 2017-07-18 |
| 修稿时间： | 2017-09-15 |
Illumination Parameter Estimation of Outdoor Scene Using Chromaticity Consistency |
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| ZHANG Rui,HAN Hui-jian,LIANG Xiu-xi,FANG Jing and ZHANG Cai-ming. Illumination Parameter Estimation of Outdoor Scene Using Chromaticity Consistency[J]. Computer Science, 2018, 45(3): 58-62, 82 |
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| Authors: | ZHANG Rui HAN Hui-jian LIANG Xiu-xi FANG Jing ZHANG Cai-ming |
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| Affiliation: | School of Computer Science and Technology,Shandong University of Finance and Economics,Jinan 250014,China;Shandong Province Research Center of Information Visualization and Computational Economy Engineering Technology,Jinan 250014,China,School of Computer Science and Technology,Shandong University of Finance and Economics,Jinan 250014,China;Shandong Province Research Center of Information Visualization and Computational Economy Engineering Technology,Jinan 250014,China,School of Computer Science and Technology,Shandong University of Finance and Economics,Jinan 250014,China;Shandong Province Research Center of Information Visualization and Computational Economy Engineering Technology,Jinan 250014,China,School of Computer Science and Technology,Shandong University of Finance and Economics,Jinan 250014,China and School of Computer Science and Technology,Shandong University of Finance and Economics,Jinan 250014,China;School of Computer Science and Technology,Shandong University,Jinan 250101,China |
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| 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. |
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| Keywords: | Illumination estimation Chromaticity consistency Chromaticity correction model Basis images |
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