Skin perfusion photography

Skin perfusion photography
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皮肤灌注摄影

DOI:
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发表时间:
2014
期刊:
International Conference on Computational Photography
影响因子:
--
通讯作者:
R. Raskar
R. Raskar
中科院分区:
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文献类型:
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作者:
Guy Satat;C. Barsi;R. Raskar

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场景的全局光分量和直射光分量的分离对于场景分析非常有用,因为每个分量提供关于照明-场景-检测器交互的不同信息。依赖于射线光学,该技术在计算摄影中很重要,但在利用波干涉效应的生物医学成像领域,它往往被低估。然而,由于散斑干涉图案的高空间频率性质,这种相干光学系统自然地适用于全局直接分离方法。在这里,我们扩展全球直接分离激光散斑对比成像(LSCI)系统重建速度地图的血液流动在皮肤中。我们比较实验结果与斑点形成模型的运动物体,并表明,重建的地图的皮肤灌注比传统的情况下得到改善。
The separation of global and direct light components of a scene is highly useful for scene analysis, as each component offers different information about illumination-scene-detector interactions. Relying on ray optics, the technique is important in computational photography, but it is often under appreciated in the biomedical imaging community, where wave interference effects are utilized. Nevertheless, such coherent optical systems lend themselves naturally to global-direct separation methods because of the high spatial frequency nature of speckle interference patterns. Here, we extend global-direct separation to laser speckle contrast imaging (LSCI) system to reconstruct speed maps of blood flow in skin. We compare experimental results with a speckle formation model of moving objects and show that the reconstructed map of skin perfusion is improved over the conventional case.
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