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Understanding Forensic Digital Imaging offers the principles of forensic digital imaging and photography in a manner that is straightforward and easy to digest for the professional and student. It provides information on how to photograph any setting that may have forensic value, details how to follow practices that are acceptable in court, and recommends what variety of hardware and software are most valuable to a practitioner. In addition to chapters on basic topics such as light and lenses, resolution, and file formats, the book contains forensic-science-specific information on SWGIT and the use of photography in investigations and in court. Of particular note is Chapter 17, Establishing Quality Requirements, which offers information on how to create a good digital image, and is more comprehensive than any other source currently available. - Covers topics that are of vital importance to the practicing professional - Serves as an up-to-date reference in the rapidly evolving world of digital imaging - Uses clear and concise language so that any reader can understand the technology and science behind digital imaging
This report describes the results of a National Institute of Justice (NIJ)-sponsored research effort to identify and prioritize criminal justice needs related to digital evidence collection, management, analysis, and use. With digital devices becoming ubiquitous, digital evidence is increasingly important to the investigation and prosecution of many types of crimes. These devices often contain information about crimes committed, movement of suspects, and criminal associates. However, there are significant challenges to successfully using digital evidence in prosecutions, including inexperience of patrol officers and detectives in preserving and collecting digital evidence, lack of familiarity with digital evidence on the part of court officials, and an overwhelming volume of work for digital evidence examiners. Through structured interaction with police digital forensic experts, prosecuting attorneys, a privacy advocate, and industry representatives, the effort identified and prioritized specific needs to improve utilization of digital evidence in criminal justice. Several top-tier needs emerged from the analysis, including education of prosecutors and judges regarding digital evidence opportunities and challenges; training for patrol officers and investigators to promote better collection and preservation of digital evidence; tools for detectives to triage analysis of digital evidence in the field; development of regional models to make digital evidence analysis capability available to small departments; and training to address concerns about maintaining the currency of training and technology available to digital forensic examiners.
"This title addresses the legal issues relating to digital evidence collected during the course of a criminal investigation and its subsequent use at trial. It surveys key technologies (cookies, web-cases, recovery methods) and explains them in a simple, easy to understand fashion.
Crime Scene Photography is a book wrought from years of experience, with material carefully selected for ease of use and effectiveness in training, and field tested by the author in his role as a Forensic Services Supervisor for the Baltimore County Police Department.While there are many books on non-forensic photography, none of them adequately adapt standard image-taking to crime scene photography. The forensic photographer, or more specifically the crime scene photographer, must know how to create an acceptable image that is capable of withstanding challenges in court. This book blends the practical functions of crime scene processing with theories of photography to guide the reader in acquiring the skills, knowledge and ability to render reliable evidence. - Required reading by the IAI Crime Scene Certification Board for all levels of certification - Contains over 500 photographs - Covers the concepts and principles of photography as well as the "how to" of creating a final product - Includes end-of-chapter exercises
The digital revolution over the past several decades has advanced every facet of evidence detection, photography, optimization, and interpretation. Forensic scientists and practitioners have benefited tremendously from the move from film to digital. With proper procedures in place, digital images and casework capabilities have increased tremendously in both complexity and range due to a vast array of tools to enhance evidence and photography. Forensic Digital Image Processing: Optimization of Impression Evidence provides the forensic investigator with the tools and understanding to extract, optimize, and interpret the maximum evidence possible from crime scenes to increase identifications. The book begins by examining the emergence of forensic digital image processing, and the gradual improvement and acceptance of the science over the past four decades. Coverage includes looking at the issues of image integrity and authentication including forensic image optimization and the manipulation of images. Chapters explore techniques exploiting color theory, modes, and channels to optimize signal-to-noise ratio in images. One of the greatest assets of digital image technology is the ability to combine multiple images of the same subject to create a final, blended image: one that displays the desired evidence and is especially useful for fingerprint or footwear impression. Later chapters demonstrate image subtraction, focus stacking, and high dynamic range, utilizing images in optimum focus and with substrate interference diminished or removed entirely. The authors look at fast Fourier transform as an optimal tool for noise removal, addressing basic theory and diagnosis of the noise signatures. The book discusses the history of digital imaging techniques and their treatment within the court system. Forensic Digital Image Processing: Optimization of Impression Evidence serves as an invaluable resource and tool for practicing professionals–as well as those new to the field—to look at best practices, the latest technology, and advances in utilizing the increasing array of tools of the trade.
Visual and multimedia digital technologies are transforming the practice of law: how lawyers construct and argue their cases, present evidence to juries, and communicate with each other. They are also changing how law is disseminated throughout and used by the general public. What are these technologies, how are they used and perceived in the courtroom and in wider culture, and how do they affect legal decision making? In this comprehensive survey and analysis of how new visual technologies are transforming both the practice and culture of American law, Neal Feigenson and Christina Spiesel explain how, when, and why legal practice moved from a largely words-only environment to one more dependent on and driven by images, and how rapidly developing technologies have further accelerated this change. They discuss older visual technologies, such as videotape evidence, and then current and future uses of visual and multimedia digital technologies, including trial presentation software and interactive multimedia. They also describe how law itself is going online, in the form of virtual courts, cyberjuries, and more, and explore the implications of law’s movement to computer screens. Throughout Law on Display, the authors illustrate their analysis with examples from a wide range of actual trials.
The use of image-based evidence in international criminal prosecutions is at a tipping point. In his pioneering book on the topic, Jonathan W. Hak, KC provides critical insight into the authentication and interpretation of images, setting out how images can be effectively used in the search for the truth. While images can convey vital information more efficiently and effectively than words alone, the biases of photographers, the use of image-altering technology, and the generation of images with artificial intelligence can lead to mischief and injustice. In this context, images must be effectively authenticated and interpreted to establish their true meaning. Addressing the growing need for visual literacy, Jonathan W. Hak's Image-Based Evidence in International Criminal Prosecutions systematically explores the value of images as probative and didactic evidence in international criminal law. It analyses existing challenges in the creation, acquisition, processing, and use of image-based evidence, making recommendations for how those challenges might be addressed. In particular, the book investigates emerging technical frontiers in image-based evidence and the potential uses for advanced visual representations like virtual reality, immersive virtual environments, and augmented reality. Ultimately, the book argues that advanced visual representations may have sufficient probative value and proposes cautious parameters for their application in the international courtroom. An essential resource for anyone working with image-based evidence, the book offers significant guidance, relevant legal and technical detail, and recommendations for the use of image-based evidence in investigations and the courtroom.
Section 1: What is Digital Forensics? Chapter 1. Digital Evidence is Everywhere Chapter 2. Overview of Digital Forensics Chapter 3. Digital Forensics -- The Sub-Disciplines Chapter 4. The Foundations of Digital Forensics -- Best Practices Chapter 5. Overview of Digital Forensics Tools Chapter 6. Digital Forensics at Work in the Legal System Section 2: Experts Chapter 7. Why Do I Need an Expert? Chapter 8. The Difference between Computer Experts and Digital Forensic Experts Chapter 9. Selecting a Digital Forensics Expert Chapter 10. What to Expect from an Expert Chapter 11. Approaches by Different Types of Examiners Chapter 12. Spotting a Problem Expert Chapter 13. Qualifying an Expert in Court Sections 3: Motions and Discovery Chapter 14. Overview of Digital Evidence Discovery Chapter 15. Discovery of Digital Evidence in Criminal Cases Chapter 16. Discovery of Digital Evidence in Civil Cases Chapter 17. Discovery of Computers and Storage Media Chapter 18. Discovery of Video Evidence Ch ...