• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Algorithms and technologies for multispectral, hyperspectral, and ultraspectral imagery XX >Experimental characterization of the quality of image reconstruction from a chromotomographic system
【24h】

Experimental characterization of the quality of image reconstruction from a chromotomographic system

机译：色谱系统中图像重建质量的实验表征

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A fieldable hyperspectral chromotomographic imager has been developed at the Air Force Institute of Technology to refine component requirements for a space-based system. The imager uses a high speed visible band camera behind a direct-vision prism to simultaneously record two spatial dimensions and the spectral dimension. Capturing all three dimensions simultaneously allows for the hyperspectral imaging of transient events. The prism multiplexes the spectral and spatial information, so a tomographic reconstruction algorithm is required to separate hyperspectral channels. The fixed dispersion of the prism limits the available projections, leading to artifacts in the reconstruction which limit the image quality and spectrometric accuracy of the reconstructions. The amount of degradation is highly dependent on the content of the scene. Experiments were conducted to characterize the image and spectral quality as a function of spatial, spectral, and temporal complexity. We find that in general, image quality degrades as the source bandwidth increases. Spectra estimated from the reconstructed data cube are generally best for point-like sources, and can be highly inaccurate for extended scenes. In other words, the spatial accuracy varies inversely with the spectral width, and the spectral accuracy varies inversely with the spatial width. Experiment results also demonstrate the ability to reconstruct hyperspectral images from transient combustion events.
机译：空军技术学院已经开发了一种可现场使用的高光谱色谱成像仪，以完善天基系统的组件要求。该成像仪在直视棱镜后面使用高速可见带照相机，以同时记录两个空间尺寸和光谱尺寸。同时捕获所有三个维度可以对瞬态事件进行高光谱成像。棱镜对光谱和空间信息进行多路复用，因此需要层析成像重建算法来分离高光谱通道。棱镜的固定色散限制了可用的投影，导致重建过程中出现伪像，从而限制了重建的图像质量和光谱精度。降级的程度在很大程度上取决于场景的内容。进行了实验，以将图像和光谱质量表征为空间，光谱和时间复杂度的函数。我们发现，通常，图像质量会随着源带宽的增加而降低。从重建的数据立方体估计的光谱通常最适合于点状源，对于扩展场景可能会非常不准确。换句话说，空间精度与光谱宽度成反比，并且光谱精度与空间宽度成反比。实验结果还证明了从瞬时燃烧事件中重建高光谱图像的能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号