Jumps to site home page. Jumps to site home page. Jumps to the campus home page U.S. Department of Commerce Labs in Boulder, Colorado. Jumps to U.S. Department of Commerce home page.
Site Map | Contact | Opportunities

Outreach

Guide to Defining Video Quality Requirements

Revised May 29, 2012
Section 11 of 11 of step 3 -- Understand System Tasks and System Functions -- in the bar chart highlighing the 4-step process for definfing video quality requirements.

Display

Public safety analysts are dependent on the good-quality display of video display that presents realistic imagery to aid accurate target identification and informed tactical decisions.

Increasingly, public safety responders are using high-quality video displays for:

  • Medical diagnosis

  • Firefighting research, training, and tactical command

  • Law enforcement forensic evidence and tactical command

Equipment: Video Decoder (player)

If a video has been compressed (or encoded), a decoder must be used to view (play) the video. There are many open-source video encoders/decoders, but there are also many proprietary systems. If a proprietary system is used, and a decoder (player) is not provided, the video cannot be viewed. An NVR, a DVR, or a VCR can perform both display and storage functions. Features:

  • Type of decoding (playback) supported — as in, H.264, MPEG-2, M-JPEG.

  • Delay — if video is being used for real-time decisions, the decoding processing can delay the delivery of the video to the decision maker.

Equipment: Monitor

Selecting the proper display equipment is as important to the achievement of specific video application goals as selecting the appropriate camera equipment. Video display monitor might be either CRT or LCD. Features:

  • “Trueness” of the colors displayed

  • Aspect ratio used

Button advances to the previous or next step in the process for determining video requirement recommendations.
Try the Recommendations Tool

 


Jumps to use case page. Jumps to use classes page. Jumps to the video system tasks page. Jumps to the video system functions page. Jumps to the recommendations tool for video requirements. Button advances to the previous step in the process for determining video requirement recommendations. Button advances to the next step in the process for determining video requirement recommendations.