Axis 2400+ Manuale Utente Scaricare il pdf (Pagina 19)

Applications that display several cameras at the same time

are easy to design. To grasp the basics, just refer to one of

the many books about using the Internet and HTML.

Using Visual Basic, you can create small applications,

storing images and showing them in a simple way. Axis

can provide you with templates and examples to help

create such applications.

For other more sophisticated applications, extra

Web pages or dedicated client software is required. In

this case, you might turn to a specialized company for

assistance. See also AXIS Camera Explorer, on page 46.

Application development

To make it easier for developers to integrate Axis video

products into their applications, Axis has developed

and now supports a standardized instruction suite of

CGI (Common Gateway Interface) programs. These

instructions collectively comprise Axis’ Application

Programming Interface (API).

In their simplest form CGI instructions for motion

detection, event triggering, alarm notiﬁ cation via e-mail,

remote picture storage and so forth, can be typed

directly into the URL of a Web browser.

Example

The following URL entry instructs an AXIS 2400 Video

Server (with IP address 121.222.222.222) to return a

single image from camera 1 at a speciﬁ ed resolution

and image size.

http://121.222.222.222/axis-cgi/jpg/image.cgi?camera=

1&resolution =320x240&compression=25

HTML, Java, Visual Basic

or C++ programming

Given the amount of information that is now available

on HTML and Java, it is quite simple to create unique

Web pages with a variety of different functions. For

example, showing images from several cameras, or

creating multi-client access and control.

By using Visual Basic and C++ programming you can

develop more sophisticated ‘client application’ software.

(A client application is a program, or set of programs,

that is installed and runs the computer to display the

video images). These ‘client applications’ communicate

at the same basic level with the Web server, using CGI.

A collection of useful application examples and

documentation is available on the Camera and

Video Developer pages on Axis’ Website at: http://

www.axis.com/techsup/cam_servers/dev/index.htm.

Embedded scripting

The Linux-based operating system combined with

the standard ‘ﬂ ash memory ﬁ le system’ inside Axis

network video products, enables advanced users and

application developers to create embedded scripts.

These are additional ﬁ les that are written and added

into the read-write area of ﬂ ash memory within the

product. They tailor the functionality of network video

products to meet speciﬁ c needs. For example, you could

create scripts for storing a predeﬁ ned number of images

in a network camera. These could then be uploaded to a

computer over the network using FTP or SMTP.

Application software

A standard Web browser provides adequate viewing software for

many basic video applications.

U SER INTERFACE

A typical example of a ‘custom’ Web page displaying images from several

cameras.

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Axis 2400+ Manuale Utente Pagina 19

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