In-Car Video Technical Support

• NCJ Number: 235578
• Author(s): Herbert Blitzer
• Date Published: July 2009
• Length: 10 pages
• Grant Number(s): 2006-IJ-CX-K003
• Agencies: NIJ-Sponsored
• Publication Type: Report (Study/Research)

Annotation

This project assisted in the preparation of a requirements document for in-Car Digital Video Systems to be published by the International Association of Chiefs of Police (IACP), and this effort was followed with the development of a National Institute of Justice Standard based somewhat on the IACP document.

Abstract

In providing technical support for the multi-agency, multi-disciplinary effort involved in the development of the requirements document, the grantee assisted with measurement of conditions expected in the field, the determination of a reasonable set of image-quality requirements, the development of means to measure candidate systems against the image quality requirements, the calibration of the measurements process in order to certify candidate systems, and engagement in the start-up of system measurement. The requirements document developed encourages improvement in in-car digital video systems and means to measure the image-quality components. A set of field measurements on incoming light at a typical traffic stop was made in New Mexico. This was followed by an additional set of measurements of reflected light from a variety of police stop situations. The information was intended for use by the National Institute of Standards and Technology in the development of a complex scene simulator. The simulator was to be used to test candidate video systems. Tests used in measuring image quality are described, along with the draft audio system testing procedure and the basic elements of the microphone transmission test.