Crime Scene

Low-cost computing power and capture devices, as well as advances in machine learning tools, allow for rapid and affordable photogrammetry tools.  These tools dramatically improve crime scene documentation by producing highly accurate, three-dimensional representations of crime scenes in high resolution.  

This webinar was presented by the NIJ Forensic Technology Center of Excellence on October 14, 2021.

Dr. Julie L. Valentine introduces the application of touch DNA in sexual assault cases through a case study. A literature review on touch DNA is summarized to provide contextual information and research on touch DNA analysis findings in groping sexual assault cases is discussed. The webinar concludes with recommendations for multidisciplinary partners to collect, submit, and analyze evidence in sexual assault cases for touch DNA.

This webinar was hosted by the NIJ Forensic Technology Center of Excellence on April 18, 2023.

It is well-known that bloodstain pattern analysis (BPA) on textiles is difficult and subject to many errors or misinterpretations. In this webinar, we probe the reason for this and suggest useful information that a bloodstain pattern analyst may be able to extract from the observed bloodstains. The data set demonstrates the roles of drop volume and impact speed in bloodstain formation on textiles.

This webinar was hosted by the NIJ Forensic Technology Center of Excellence on December 12, 2023. 

The National Institute of Justice’s Terrestrial LiDAR Scanning (TLS) Working Group was convened to create consensus-based best practices that standardize and improve the use of TLS in criminal justice applications. This webinar is intended to serve as a general overview of the technology, its use in scene documentation and reconstruction, and key takeaways of the resulting best practice guidelines.

This webinar was hosted by the Forensic Technology Center of Excellence on  May 3, 2022.

What does science tell us about case factors that can lead to a wrongful conviction? Dr. Jon Gould of American University will discuss the findings of the first large-scale empirical study that has identified ten statistically significant factors that distinguish a wrongful conviction from a "near miss." (A "near miss" is a case in which an innocent defendant was acquitted or had charges dismissed before trial). Following Dr. Gould's presentation, Mr. John R.

Bill King discusses the operations of the National Integrated Ballistic Information Network (NIBIN), a program through which firearms examiners at state and local crime laboratories compare tool marks on fired bullets or cartridges found at a crime scene to digitized images of ballistic evidence in a nationwide database.

The NIJ-sponsored Expert Working Group on Human Factors in Latent Print Analysis is clarifying potential sources of error in pattern recognition analysis. It will develop best practices to remove or minimize these sources. NIJ is addressing recommendations in the 2009 National Academy of Sciences' report titled "Strengthening Forensic Science in the United States: A Path Forward." Specifically, the panelists focus on recommendation 5, which encourages research programs on human observer bias and sources of human error in forensic examinations.

The strength of our criminal justice system depends on its ability to convict the guilty and clear the innocent. But we know that innocent people are sometimes wrongfully convicted and the guilty remain free to victimize others. The consequences of a wrongful conviction are far-reaching for the wrongfully convicted and the survivors and victims of the original crimes. 

Forensic science research and development is critical to improving the efficiency and effectiveness of the nation's crime laboratories. Watch how the National Institute of Justice takes an idea from a need to a reality in the laboratory. 

You may also be interested in our video Why Is There an Evidence Backlog?

This webinar will inform the audience of the changes to three programs available for publicly funded forensic laboratories and introduce a new program for FY 2017. Changes to existing programs will be highlighted and presenters will discuss the background and goals of the solicitations, recommendations for successful applications, application expectations and requirements, the review process, and the application checklist. There will also be time for questions and answers at the end of the webinar.

Solicitations discussed include:

This webinar will provide details and guidance for potential applicants to the National Institute of Justice's Research and Evaluation of Drugs and Crime FY 2017 solicitation. The presenters will discuss the purpose and goals of this funding opportunity and address frequently asked questions. A Q&A session will conclude this webinar.

NIJ Office of Investigative and Forensic Sciences Director Gerald LaPorte and Deputy Director Heather Waltke, along with Heather LaSalle, Forensic Examiner, DNA Casework Unit, and Tina Delgado, Chief, Biometrics Division from the FBI Laboratory discuss how scientific advances can help jurisdictions process a large number of previously unsubmitted sexual assault kits.