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  2. Closed-circuit television camera - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television...

    These cameras do not require a video capture card because they work using a digital signal which can be saved directly to a computer. The signal is compressed 5:1, but DVD quality can be achieved with more compression (MPEG-2 is standard for DVD-video, and has a higher compression ratio than 5:1, with a slightly lower video quality than 5:1 at best, and is adjustable for the amount of space to ...

  3. File:Pentagon Security Camera 1.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Pentagon_Security...

    Date/Time Thumbnail Dimensions User Comment; current: 17:17, 9 June 2012: 3 min 11 s, 312 × 212 (5.89 MB): Ras67: cropped, silent sound track removed: 17:05, 3 October 2010

  4. Abstract photography - Wikipedia

    en.wikipedia.org/wiki/Abstract_photography

    Abstract photography, sometimes called non-objective, experimental or conceptual photography, is a means of depicting a visual image that does not have an immediate association with the object world and that has been created through the use of photographic equipment, processes or materials.

  5. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    There is a cost in the retention of the images produced by CCTV systems. The amount and quality of data stored on storage media is subject to compression ratios, images stored per second, and image size, and is affected by the retention period of the videos or images. [156] DVRs store images in a variety of proprietary file formats. CCTV ...

  6. HDcctv - Wikipedia

    en.wikipedia.org/wiki/HDcctv

    [1] [2] [3] HDcctv uses the SMPTE HD-SDI protocol and can transmit 720p or 1080p video over at least 100 m of RG59 cable. The HDcctv Alliance is a non-profit, global consortium that develops and promotes the HDcctv standard. Advantages over IP video surveillance are claimed to include low latency and zero configuration.

  7. Surveillance art - Wikipedia

    en.wikipedia.org/wiki/Surveillance_art

    Surveillance art is the use of technology intended to record human behavior in a way that offers commentary on the process of surveillance or the technology used to surveil.