HCNet:为编码光圈快照光谱成像提供多曝光高动态范围重建网络.
Hang Shi1,2, Jingxia Chen1, Yahui Li2
1School of Electronics Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, China.
Sensors (Basel, Switzerland)
|January 10, 2026
概括
本研究引入了一种多曝光融合方法,以提高编码孔径快照光谱成像 (CASSI) 重建质量. 这种新方法克服了动态范围的限制,在具有挑战性的高动态范围场景中提高了超光谱图像保真度.
科学领域:
- 光学工程是指光学工程.
- 图像处理 图像处理
- 频谱学是一种光谱学.
背景情况:
- 编码孔径快照光谱成像 (CASSI) 是一种快速的高光谱成像技术.
- 现有的CASSI系统由于压缩测量的有限动态范围而面临限制,降低了重建质量.
- 硬件限制和数据采集模式有助于这些动态范围问题.
研究的目的:
- 开发一种高质量的超光谱重建方法,解决CASSI的动态范围限制.
- 为了提高超光谱数据重建在空间和光谱两个维度的保真度.
- 为了提高CASSI在高动态范围 (HDR) 场景中的测量能力.
主要方法:
- 一个多曝光数据采集策略,捕获低,中,高曝光低动态范围 (LDR) 测量.
- 基于多曝光聚变的高动态范围 (HDR) CASSI测量重建网络 (HCNet) 的设计.
- HCNet采用多级特征融合架构,具有局部-全球卷积联合注意力和残余增强,用于融合多次曝光信息.
主要成果:
- 与单次曝光策略相比,拟议的方法显著提高了超光谱图像重建质量.
- 在实际的CASSI系统中,HCNet显示出对多次暴露间隔动和射击噪声的高稳定性.
- 重建显示了明亮和黑暗细节的增强对比,以及更高的光谱相关性,特别是在HDR场景中.
结论:
- 多曝光融合方法有效重建物理一致的HDR CASSI测量结果.
- 开发的HCNet非常适合CASSI系统,使得高保真度的超频谱数据重建成为可能.
- 该方法验证了在HDR场景中增强的CASSI重建和有效的测量能力.
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