U.S. flag
      An official website of the United States government, Department of Justice.
        Here's how you know
      Here's how you know**Official websites use .gov**
            
            A **.gov** website belongs to an official government organization in the United States.
      **Secure .gov websites use HTTPS**
            
            A **lock** (
            A locked padlock
            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Menu

      
        close

            
            
                                              About NIJ
        
                    
  
          About NIJ
      
    
          The NIJ Director
          How NIJ Is Organized
          Mission and Guiding Principles
          Research and Development Process
          Strategic Framework
          Assessments of NIJ
          Annual Reports & Reports to Congress
          Staff Directory
          Funding & Awards
        
                    
  
          Funding & Awards
      
    
          Current Funding
          Forthcoming Funding
          Expired Funding
          Awards: Listing of Funded Projects
          Guidance for Applicants and Awardees
          Fellowship & Student Programs
          Travel Scholarships
          NIJ Challenge Program
          Library & Multimedia
        
                    
  
          Library & Multimedia
      
    
          NIJ Journal
          Podcasts
          Publications Listing
          Multimedia Listing
          Rated Practices on CrimeSolutions
          Rated Programs on CrimeSolutions
          Software & Databases
          Datasets
          Patents
          Topics
        
                    
  
          Topics
      
    
          Article Listing
          Corrections
          Courts
          Crime Prevention
          Crimes
          Drugs and Crime
          Equipment and Technology
          Forensic Sciences
          Youth Justice
          Justice System Reform
          Law Enforcement
          Tribal Crime and Justice
          Victims of Crime
          Events
        
                    
  
          Events
      
    
          NIJ 2024 Research Conference
          Scheduled Events
          On-Demand Events
          Research Meetings & Workshops
          NIJ-Hosted Online Training

                            
                                About
          Contact Us
          Subscribe
          Topics A-Z
                  Share
FacebookXLinkedInRedditPinterestEmail Home
                            Library & Multimedia
 Research on Videoconferencing for Pretrial Release Hearings, Version 1.0
NCJ Number
              252945

Date Published

December 2018
Length
              115 pages
Annotation
              The overall objective of this research by the National Criminal Technology Research, Test, and Evaluation Center was to conduct experimental quantitative and qualitative research to determine whether quantitative metrics for video quality in the video teleconferencing (VTC) for pretrial-release hearings could be found that correlate highly with human subjects' perceived video quality.
Abstract
              The study team identified reference videos that would test conditions that might influence the VTC system's ability to capture digitally and display scenes reasonably found in a courtroom. Such scenes might influence viewer's perception of demeanor, including variation in contrast between subject and the background, initial white balance, angle of the lighting on the subject, distance or angle between camera and subject, and reflective surfaces. A total of 138 clips representing various levels of introduced jitter and packet loss were created. The study found that participant viewers believed they were able to discern adequately facial expressions of the subject in the video despite noticeable levels of jitter and packet loss distortions. Thus, there was usefulness in videos with some levels of apparent noise; therefore, subjective rating of the utility of VTC should be further explored to determine a threshold of acceptability for automated video quality assessment tools. Although more study of this issue is needed, objective measures are apparently more conservative than human participants in the scoring of videos. Consequently, if the objective measure determines that a video is bad or poor, there is a high likelihood the video is not usable; however, if the objective measure determines that the video is fair, good, or excellent, it is likely the video is usable for pretrial release hearings. 27 tables, 6 figures, and 38 bibliographic listings
      
  
          Additional Details
Grant Number(s)
        2013-MU-CX-K111


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)
                                Program/Project Evaluation
                                Program/Project Description


  
  
        
  Award
        Establishing a National Criminal Justice Technology Research, Test and Evaluation Center
    
  
  
Date Published: December 1, 2018
    
          Downloads
        
                      PDF

Side navigation
  

        

  
  
              NIJ Journal
    
      
            
            
            
      Podcasts
    
      
            
            
            
      Publications Listing
    
      
            
            
            
      Multimedia Listing
    
      
            
            
            
      Rated Practices on CrimeSolutions
    
      
            
            
            
      Rated Programs on CrimeSolutions
    
      
            
            
            
      Software & Databases
    
      
            
            
            
      Datasets
    
      
            
            
            
      PatentsRelated Topics
        
                Corrections
        Court Procedures
        Courts
        Evaluation Measures
        Information technology



  
Similar Publications
        
                      Direct-Injection Mass Spectrometric Method for the Rapid Identification of Fentanyl and Norfentanyl in Postmortem Urine of Six Drug-Overdose Cases
                  Selecting Microhaplotypes Optimized for Different Purposes
                  Police Culture and Officer Behavior: Application of a Multilevel Framework
 Top

      National Institute of Justice

        
        
                        About NIJ
                    About NIJ
      
    
                  How NIJ Is Organized
      
    
                  NIJ Director
      
    
                  Research Disclaimer
      
    
                  Funding & Awards
                    Funding & Awards Home
      
    
                  Awards Listing
      
    
                  Current Funding
      
    
                  Guidance for Applicants and Awardees
      
    
                  Resources
                    Events
      
    
                  Podcasts
      
    
                  Publications
      
    
                  Topics
      
    
                  Multimedia
      
    
                  Reuse Policy
      
    
                  Contacts
                    Contact NIJ
      
    
                  Staff Directory
      
    
                  Submit a FOIA Request
      
    
                  File a Civil Rights ComplaintFacebook
          
                      X
          
                      YouTube
  

      810 7th St. NW, Washington, D.C. 20531
      
              Secondary Footer link menu
            Accessibility
              Plain Language
              Privacy Policy
              Legal Policies and Disclaimer
              No FEAR Act
              Freedom of Information Act
              USA.gov
              Justice.gov