• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Pattern Analysis and Machine Intelligence >Photometric Stereo in a Scattering Medium
【24h】

Photometric Stereo in a Scattering Medium

机译：散射介质中的光度立体

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

Photometric stereo is widely used for 3D reconstruction. However, its use in scattering media such as water, biological tissue and fog has been limited until now, because of forward scattered light from both the source and object, as well as light scattered back from the medium (backscatter). Here we make three contributions to address the key modes of light propagation, under the common single scattering assumption for dilute media. First, we show through extensive simulations that single-scattered light from a source can be approximated by a point light source with a single direction. This alleviates the need to handle light source blur explicitly. Next, we model the blur due to scattering of light from the object. We measure the object point-spread function and introduce a simple deconvolution method. Finally, we show how imaging fluorescence emission where available, eliminates the backscatter component and increases the signal-to-noise ratio. Experimental results in a water tank, with different concentrations of scattering media added, show that deconvolution produces higher-quality 3D reconstructions than previous techniques, and that when combined with fluorescence, can produce results similar to that in clear water even for highly turbid media.
机译：光度立体声被广泛用于3D重建。但是，由于来自源和物体的正向散射光以及从介质向后散射的光（反向散射），到目前为止，它在诸如水，生物组织和雾等散射介质中的使用一直受到限制。在稀介质的常见单一散射假设下，我们在这里做出三点贡献，以解决光传播的关键模式。首先，我们通过广泛的仿真表明，来自光源的单散射光可以由具有单个方向的点光源近似。这减轻了显式处理光源模糊的需要。接下来，我们对由于物体散射光而造成的模糊建模。我们测量对象点扩展函数，并介绍一种简单的反卷积方法。最后，我们展示了如何在可用的情况下成像荧光发射，消除了反向散射分量并增加了信噪比。在水箱中添加不同浓度的散射介质的实验结果表明，反卷积比以前的技术产生更高质量的3D重建，并且与荧光结合使用时，即使对于高度混浊的介质，其产生的结果也可以与清澈的水中相似。

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