Discussion Multispectral imaging is used oven an extremely wide spectral domain . It started with NASA using the technique for satellite imaging using kilometer-length radio waves , to the technique being used by forensic science using light in the visible to the near infrared region , to medical forensics using MeV gamma rays (National Research Council 1998 )The use of Multispectral imaging in forensics and law enforcement for the examination of a wide variety of evidences is a field that is growing but has not yet reached the state of being a universally accepted practice . The technique is being used for analyzing photographic and video based evidence , and also for DNA analysis in recent times (Lanir 2005 )Using Multispectral imaging has both advantages as well as certain disadvantages in the analysis of a scene . In addition , there are some pre-requisites needed which make the approach limited to certain situations . All these points are discussed subsequently in this section .Advantages of Multispectral Imaging Technique Advantage over naked-eye viewing – While a human eye has the capability of differentiating between millions of colors and various combinations it is obvious that the perception is usually dependant on a mixture of different wavelength . In other words , the complete spectral information as received by eyes is still incomplete . The reason for this is because the visible portion of light , no matter the degree of its complexity , is still divided into the three basic colors – red , green and blue .Multispectral imaging can generate the accurate and complete optical spectra at every pixel . Finally and image processing software can be used for getting the maximum information from each of the pixels (Condea , Haneishia , Yamaguchia , Ohyama Baaz J 2007 )This might not be very important and might seem like overkill for regular vision . But in case of forensics , where the actual and precise data is necessary , this capability becomes very helpful as the data is completely analyzed . Differences in spectra can be used for the accurate detection of foreign particles in a terrain or differences in finger prints from different individuals Advantage over cameras – Forensic science is the capture and preservation of accurate image . Conventional color films and digital color cameras also break the various colors combinations in RGB , so the information is just as inaccurate as seen with a naked eye . Hence ,multispectral imaging scores over using these equipments also (Chieu 2001 )In addition , multispectral imaging can be used in areas which are inaccessible ad can give simple multi-temporal readings . The area range of the scene is also more than what is for a digital camera . Also , until very recently the use of numerical processing was fairly restricted in the camera systems . Finally , Multispectral imaging also offers light attenuation techniques (Westland Ripamonti 2004 )Avoid Contamination of the crime scene – One of the advantages provided by using multispctral imaging is that there is no need for constant physical contact with the crime scene . This characteristic helps in two types of investigations .In case of analyzing a crime scene for evidence , the constant…