Guide to Defining Video Quality Requirements
Recommendations Tool for Video Requirements
Use this tool to get recommendations for a single use case, or follow the Generalized Use Class Questionnaire steps to get recommendations that apply to multiple use cases belonging to one or more use classes.
Answer these questions and then click Get Recommendations.
Usage Timeframe
Will you use the video for real-time applications or record for later use?
Discrimination Level
What do you need to recognize a target of interest?
Target Size
How much of the frame does the object or person of interest occupy?
Motion
How much movement (of the target or the camera) and spatial detail occupies the frame?
Lighting Level
Is lighting uniform, or will near-black to daylight ranges occur in the frame?
Storage Calculator:
How long would you like to store captured video? (days:hours:minutes)
How many cameras are being used?
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Recommendations from outside sources are referenced. Match the reference number (as in [1], [8, 10], and so on) with the references in this list (click here).
Video Requirements Tool Reference List
Selection of a reference cited neither implies that the information, products, or services of its source are better than those of another for a given parameter, nor does it imply that all claims made by these sources are accurate. Before procuring any product or service, research as many options as possible.
[1] – Web document, link cited April 2011. CCTV Lab Test Charts Instruction for Setup and Usage, pp. 4, CCTV Labs Pty. Ltd. Castle Hill, Australia, 2006.
http://www.vidilabs.com/cctv_test_chart_instructions_latest.pdf
[2] – V. Damjanovski, CCTV Networking and Digital Technology, pp. 38–39 (cited for narrow/small-aperture in bright light), 160–172 (cited for camera specifications), pp. 260 (cited for analog television lines to digital resolution conversion), Elsevier Butterworth-Heinemann, Burlington, MA 01803, USA, 2005.
[3] – Web page, link cited April 2011. “How do I select a camera lens?” Webcam Corp. Specify scene object distance, the horizontal and vertical view you require, and the tool returns focal length in millimeters.
http://www.webcamsoft.com/en/faq/lens_calc.html
[4] – Web page, link cited April 2011. “Lens Field of View Comparison Tool,” ApexCCTV. Click tab for Inside or Outside, then position mouse over lens sizes to see examples for illustrative purposes.
http://www.apexcctv.com/Lens-Field-of-View-Comparison.html
[5] – Web page, link cited April 2011. J. Mesenbrink, “Seeing the Light with CCTV Cameras.” Security Magazine, January 4, 2002. Specifically, see the first five paragraphs under “Camera Improvements.”
http://www.securitymagazine.com/articles/seeing-the-light-with-cctv-cameras-1
[6] – Web page, link cited April 2011. “Commercial Security Newsletter,” Altec Systems. Specifically, see the first four paragraphs under “Determining the Appropriate Camera.”
http://www.altecsys.com/Articles/commercial-security-newsletter.html
[7] – Web page, link cited April 2011. “FAQ,” Sentry Security Systems Inc. Specifically, see the fourth paragraph, “Why don’t I need 30 frames per second video recording on all security cameras?.”
http://www.sentry-resellers.com/faq.htm
[8] – Web page, link cited April 2011. “Selecting the Resolution of the Camera and the Lens,” Technology Notes, Kintronics.
http://www.imakenews.com/kin2/e_article000345318.cfm?x=b8v5FDQ,b25tl0b3,w
[9] – Web document, link cited April 2011. U.S. Department of Justice Office of Justice Programs, September 1999. “The Appropriate and Effective Use of Security Technologies in U.S. Schools, A Guide for Schools and Law Enforcement Agencies,” Chapter 2, Video Surveillance.
http://www.ncjrs.gov/school/ch2a_9.html
[10] – Web document, link cited April 2011. ITU-R. 2011 March. Recommendation BT.601-7. Studio encoding parameters of digital television for standard 4:3 and wide-screen 16:9 aspect ratios. BT Series, Broadcasting service (television). Provides technical formulas concerning the conversion of analog television lines to digital resolution. See also [2] (pp. 260), [8, 9] above for less technical conversions.
http://www.itu.int/rec/R-REC-BT.601-7-201103-I/en
[11] – Web page, link cited April 2011. “HDTV – Digital Television Formats” HDTV.biz.
http://hdtv.biz/resolution.shtml
[12] – Web document, link cited April 2011. Theia Technologies. 2009. “How to calculate image resolution.” Explains how to use pixel-per-foot values to calculate the view angle to use. pp. 1 (defines pixel per foot), pp. 2 (provides picture examples illustrating how pixel-per-foot values correlate to resolution quality).
http://www.theiatechnologies.com/files/Resolution%20calculation.pdf
