March Networks Whitepapers

Life Cycle Costs of Onboard CCTV

11/21/2007 12:00:00 AM

The true cost of video surveillance technology is considerably more than the initial procurement costs. Operating, maintaining and replacing a system adds significantly to the total life cycle cost, and ultimately determines whether an investment is a sound one or not. System performance and reliability, which are generally reflected in the initial cost, directly impact life cycle costs. This paper will help decision-makers evaluate on-board CCTV systems objectively, and make recommendations to public authorities supported by cost-benefit comparisons of different products over the duration of their planned use.

Consistency of Video Evidence

11/21/2007 12:00:00 AM

Digital video recording has largely replaced analog methods for recording video in corporate security and transaction recording applications. This document outlines procedures to ensure the admissibility of digital video images captured with a March Networks NVR / DVR system when submitted in support of evidence in a court of law.

Many of the recommendations in this document follow both the U.S. Department of Justice, Federal Bureau of Investigations document, "Definitions and Guidelines for the Use of Imaging Technologies in the Criminal Justice System" as well as the U.K. House of Lords, Science and Technology Select Committee "Digital Images as Evidence".

Introduction to Video Compression

11/21/2007 12:00:00 AM

Like any data transmission over a digital network, digital video is encoded as binary 1's and 0's. It has a source and a destination, and it requires an end-user application to manage the data. Traditional data, like spreadsheets, is different from multimedia data, such as video and audio, in the quantity of information transmitted. Like most data, video can be transmitted as a single clip, however it can also be streamed with no apparent beginning or end. Being able to handle this data over local and wide area networks presents a new challenge to enterprise IT departments today. This paper introduces the various technologies and standards related to networked digital video.

MPEG-4 Video Compression

11/21/2007 12:00:00 AM

In recent years, there has been a proliferation of video-based applications. Retailers and banks have adopted them as part of their security campaigns, and desktop-appliance and handheld-device users as part of their software libraries.

With the implementation of these tools, certain practical challenges have arisen. In the case of networked digital video in particular, storage requirements and high bandwidth consumption have created a need for more efficient, powerful compression techniques.

March Networks Global Positioning System (GPS) Accuracy

10/1/2007 12:00:00 AM

While GPS accuracy for location data is generally well known, data for velocity or speed is not as well understood. Speed data is often relied upon as important evidence when a traffic violation or an accident occurs.