摘要
随着光学成像技术的发展,越来越多的成像技术应用于文物保护分析领域。其中,高光谱成像以其无损、非接触以及“图谱合一”的特点受到广泛关注。然而,受成像传感器的物理限制,现有高光谱图像空间分辨率远不及RGB三通道的高清数码相机,极大阻碍了文物高光谱数字化的应用。针对此问题,该文首先设计了一套文物高光谱数字化采集流程,便于规范化采集同一场景的RGB和高光谱图像数据,为后续融合增强带来便利。其次,提出了基于多尺度多支路的RGB和高光谱图像融合方法,通过设计空间光谱融合模块和细化模块,获取具有高空间和高光谱分辨率的数字化影像。实验结果表明,无论从主观视觉还是客观指标,提出的方法在保持光谱分辨率的同时,更好地提高了空间分辨率。
With the development of optical imaging technology,more and more imaging technologies have been applied in the field of cultural relics protection and analysis.Among them,hyperspectral imaging has received extensive attention due to its non-destructive,non-contact and"integration of image and spectral".However,due to the physical limitations of imaging sensors,the spatial resolution of existing hyperspectral images is far less than that of RGB three-channel high definition digital cameras,which greatly hinders the application of hyperspectral digitization of cultural relics.To solve this problem,this paper firstly designs a set of hyperspectral digital acquisition process for cultural relics to facilitate the standardized acquisition of RGB and hyperspectral image data in the same scene,and facilitate the subsequent fusion and enhancement.Secondly,a multi-scale and multi-branch image fusion method based on RGB and hyperspectral images is proposed.By designing a spatial-spectral fusion module and a refine module,digital images with high spatial and high spectral resolution are obtained.The experimental results show that the proposed method can improve the spatial resolution while maintaining the spectral resolution.
作者
彭进业
张涵毓
付毅豪
张群喜
刘璐
王珺
PENG Jinye;ZHANG Hanyu;FU Yihao;ZHANG Qunxi;LIU Lu;WANG Jun(School of Information Science and Technology, Northwest University, Xi′an 710127, China;Shaanxi History Museum, Xi′an 710061, China;Shaanxi Province Silk Road Digital Protection and Inheritance of CulturalHeritage Collaborative Innovation Center, Xi′an 710127, China)
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第5期768-777,共10页
Journal of Northwest University（Natural Science Edition）
基金
国家自然科学基金资助项目(62101446)
陕西省科技计划重点项目(2021ZDLGY15-06)
西安市智能感知与文化传承重点实验室(2019219614SYS011CG033)。
关键词
高光谱图像
RGB图像
采集流程
图像融合
hyperspectral images
RGB images
acquisition process
image fusion
