Milestone Analytics 2.2 BOSCH VCA - Manual (Page 35)

Milestone XProtect Analytics 2.2 – BOSCH VCA; Administrator’s Manual
www.milestonesys.com Page 35 Glossary
H
Host: A computer connected to a TCP/IP network. A host has its own IP address, but may -
depending on network configuration - furthermore have a name (host name) in order to make it
easily identifiable.
Host Name: A name by which a particular computer on a network is identified. Host names are
often easier to remember than IP addresses.
HTTP: Hyper Text Transfer Protocol, a standard for exchanging files across the internet. HTTP is
the standard used for formatting and transmission of data on the world wide web.
I
I-Frame: Short name for intraframe. Used in the MPEG standard for digital video compression, an
I-frame is a single frame stored at specified intervals. The I-frame records the entire view of the
camera, whereas the following frames (P-frames) record only the pixels that change. This helps
greatly reduce the size of MPEG files. An I-frame is similar to a keyframe.
I/O: Short for Input/Output.
Interlacing: Interlacing is a method determining how an image is refreshed when shown on a
screen. With interlacing, the image is refreshed by first scanning every other line in the image,
then scanning every opposite line, and so forth. This allows for a faster refresh rate because less
information must be processed during each scan. However, in some situations, interlacing may
cause flickering, or the changes in only half of the image's lines for each scan may be noticeable.
IP: Internet Protocol; a protocol (i.e. standard) specifying the format and addressing scheme used
for sending data packets across networks. IP is often combined with another protocol, TCP
(Transmission Control Protocol). The combination, known as TCP/IP, allows data packets to be sent
back and forth between two points on a network for longer periods of time, and is used when
connecting computers and other devices on the internet.
IP Address: Internet Protocol address; the identifier for a computer or device on a network. Used
by the TCP/IP protocol for routing data traffic to the intended destination. An IP address consists of
four numbers, each between 0 and 256, separated by full stops (example: 192.168.212.2).
IPIX: A technology that allows creation and viewing of 360-degree panoramic images.
Iris: On a camera, iris refers to the adjustable opening (a.k.a. aperture) used for controlling the
amount of light coming through a lens. Iris thus has a significant effect on the exposure of images.
J
JPEG: An image compression method, also known as JPG or Joint Photographic Experts Group. The
method is a so-called lossy compression, meaning that some image detail will be lost during
compression. Images compressed this way have become generically known as JPGs or JPEGs.
JPG: An image compression method, also known as JPEG or Joint Photographic Experts Group. The
method is a so-called lossy compression, meaning that some image detail will be lost during
compression. Images compressed this way have become generically known as JPGs or JPEGs.
K
Keyframe: Used in the MPEG standard for digital video compression, a keyframe is a single frame
stored at specified intervals. The keyframe records the entire view of the camera, whereas the
following frames record only the pixels that change. This helps greatly reduce the size of MPEG
files. A keyframe is similar to an I-frame.
Km/h: Kilometers per hour.