Groves Roger M, Pedrini Giancarlo, Osten Wolfgang
ITO Institut für Technische Optik, Universität Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany.
Appl Opt. 2008 Oct 20;47(30):5550-6. doi: 10.1364/ao.47.005550.
Extended dynamic range (EDR) imaging is a postprocessing technique commonly associated with photography. Multiple images of a scene are recorded by the camera using different shutter settings and are merged into a single higher dynamic range image. Speckle interferometry and holography techniques require a well-modulated intensity signal to extract the phase information, and of these techniques shearography is most sensitive to different object surface reflectivities as it uses self-referencing from a sheared image. In this paper the authors demonstrate real-time EDR imaging in shearography and present experimental results from a difficult surface reflectivity sample: a wooden panel painting containing gold and dark earth color paint.
扩展动态范围（EDR）成像通常是一种与摄影相关的后处理技术。相机使用不同的快门设置记录场景的多个图像，并将它们合并成一个具有更高动态范围的单一图像。散斑干涉测量法和全息技术需要一个调制良好的强度信号来提取相位信息，在这些技术中，剪切散斑干涉术对不同物体表面反射率最为敏感，因为它使用了剪切图像的自参考。在本文中，作者展示了剪切散斑干涉术中的实时EDR成像，并给出了一个具有挑战性的表面反射率样本的实验结果：一幅包含金色和深土色颜料的木板画。
