Edelman Gerda J, Hoveling Richelle J M, Roos Martin, van Leeuwen Ton G, Aalders Maurice C G
Department of Biomedical Engineering & Physics, Academic Medical Center, University of Amsterdam, P.O. Box 22700, 1100 DE, Amsterdam, the Netherlands.
Mobile Forensic Team, Netherlands Forensic Institute, P.O. Box 24044, 2490 AA, The Hague, the Netherlands.
J Forensic Sci. 2013 Sep;58(5):1156-1162. doi: 10.1111/1556-4029.12225. Epub 2013 Aug 6.
All objects radiate infrared energy invisible to the human eye, which can be imaged by infrared cameras, visualizing differences in temperature and/or emissivity of objects. Infrared imaging is an emerging technique for forensic investigators. The rapid, nondestructive, and noncontact features of infrared imaging indicate its suitability for many forensic applications, ranging from the estimation of time of death to the detection of blood stains on dark backgrounds. This paper provides an overview of the principles and instrumentation involved in infrared imaging. Difficulties concerning the image interpretation due to different radiation sources and different emissivity values within a scene are addressed. Finally, reported forensic applications are reviewed and supported by practical illustrations. When introduced in forensic casework, infrared imaging can help investigators to detect, to visualize, and to identify useful evidence nondestructively.
所有物体都会辐射人眼不可见的红外能量，这种能量可由红外相机成像，从而呈现物体温度和/或发射率的差异。红外成像对于法医调查人员来说是一项新兴技术。红外成像快速、无损且非接触的特性表明它适用于许多法医应用，从死亡时间的估计到在深色背景上检测血迹等。本文概述了红外成像所涉及的原理和仪器设备。文中探讨了由于场景内不同辐射源和不同发射率值而导致的图像解读难题。最后，对已报道的法医应用进行了综述，并辅以实际案例说明。在法医案件工作中引入红外成像技术，可帮助调查人员无损地检测、呈现和识别有用证据。
