Milestone XProtect Smart Client 2013 - Manual (Page 169)

Milestone XProtect ® Smart Client
2014
User's Manual
www.milestonesys.com 169 Glossary of Terms
system for triggering actions. Depending on
surveillance system configuration, events may
be caused by input from external sensors, by
detected motion, by data received from other
applications, or manually through user input.
The occurrence of an event could, for
example, be used for making a camera record
with a particular frame rate, for activating
outputs, for sending e-mails, or for a
combination thereof.
F
FPS
Frames Per Second, a measure indicating the
amount of information contained in video. Each
frame represents a still image, but when
frames are displayed in succession the illusion
of motion is created. The higher the FPS, the
smoother the motion will appear. Note,
however, that a high FPS may also lead to a
large file size when video is saved.
Frame Rate
A measure indicating the amount of
information contained in motion video.
Typically measured in FPS (on page 169)
(Frames Per second).
G
GOP
Group Of Pictures; individual frames grouped
together, forming a video motion sequence.
H
H.264
A compression standard for digital video. Like
MPEG (on page 171), the standard uses so-
called lossy compression as it stores only the
changes between keyframes, removing often
considerable amounts of redundant
information: Keyframes stored at specified
intervals record the entire view of the camera,
whereas the following frames record only
pixels that change. Together with a very large
degree of compression, this helps greatly
reduce the size of video in the H.264 format.
The very large degree of compression in
H.264, however, can use considerable
resources on the devices involved in the data
communication. For example, the computer
running the Smart Client should be capable of
using considerable resources on de-
compressing H.264 video when it receives it
from the surveillance system.
Hexadecimal
A numeral system with a base of 16, meaning
that it uses 16 distinct symbols. Here used for
defining color nuances in the map view's color
tool.
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 (see "IP
Address" on page 170).
Hotspot
A particular position for viewing magnified
and/or high quality camera images in a Smart
Client view (on page 173).
HTML
Hyper Text Markup Language; a common
format used when creating web pages.
HTML Page
A document, such as a web page, created
using Hyper Text Markup Language (HTML
(on page 169)). HTML pages, for example an