20 Desember 2014
Difference Between DIS, CCD and CMOS
DIS = Digital Image Stabilization
CCD = Charged Coupling Device
CMOS = Complimentary Metal Oxide Semiconductor
19 Juli 2014
Understanding HD & Megapixel Cameras
The fastest growing segment of the security video market is the network or IP camera. And the fastest growing IP camera technologies are HD and megapixel. Therefore, it is important to understand the difference between standard definition (SD), high definition (HD), and megapixel cameras.
5 Juni 2014
Planning and Design IP Surveillance
Planning and Design
This chapter introduces the concepts of why an enterprise network should consider migrating from a standalone analog network to a converged IP network supporting voice, video, and data. The following topics are addressed:
•Introduction to the concepts of video resolutions, codecs, aspect ratios, frame rates and requirements for camera placement to achieve the required number of pixels per-foot to provide sufficient video quality to meet the needs of the physical security manager.
•Network deployment models and the IP transports used by IP video surveillance cameras.
•The network requirements, video traffic flows between endpoints, bandwidth requirements are discussed.
•A design checklist to help the physical security and network manager achieve the goal of integrating IP video surveillance on the IP network.
•A case study for implementing IP video surveillance on a campus deployment.
1 Januari 2014
MJPEG, MPEG4 or H.264 which one is better?
Selecting the proper imaging technology up front will be one of your most important decisions you will face designing and implementing your network video project. When considering compression options for network video solutions, the following video related issues should be reviewed and carefully considered.
Minimum and Maximum Frame Rates (FPS)
Number of Cameras (Scalability)
Overall Latency (time difference between live and displayed video)
The compression logic used in both MJPEG, MPEG4 and H.264 are beyond the scope of this white paper. Suffice it to say that MJPEG, MPEG4 and H.264 compression algorithms are the most common forms of video compression currently used in the network video industry.
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