The Original Scan Printed Document Inspection Of Empirical Research

With the popularization and development of electronic office computers, a variety of convenient daily life electronic equipment common in social life, in which the scanner is formed as a daily file electronic versions of common office equipment,it has become an essential office or living. With the continuous prosperity of our country and improve the socio-economic and legal system, an increasing number of social activities will be used to scan a printed document, thus becoming one of the important objects of Forensic research instruments. Scan print document examination for Forensic Examination practice test tampering forgery of documents, copies of inspection and appraisal mechanism has a significant role in promoting the identification document examination is an important part of providing technical support for the implementation of judicial fairness and justice.On the basis of existing literature, a study is divided into five parts, the first overview of the research background, clarify concepts to scan a printed document for the study erected theoretical support; second is to scan files and print files test overview, because in the process of scanning printed documents may be examined relates to image processing, for which there are concepts and techniques of image preprocessing introduction; third part is characterized by scanning an original printed documents related experiment, to find the law of feature points; fourth and fifth part isthe results of previous experiments and image pre-processing technology analysis and appraisal, analysis and appraisal carried out from two aspects, one is the practical application of inspection and identification of specific practical activities, on the other hand is related to the case were discussed and summarized.