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March 26, 2011

How to Compare the Min Lux Levels in the dataSheet of the Camera

Time and again this question is asked, if a 0.002 Lux Camera is better than a Camera with a Specification of 2Lux. This mail and Work `sheet is a attempt to address this.
The Pdf Attached provided the formula for the maths which proves which camera is better than the other for the similar light conditions and similar FPS. If you look at most data sheets the Min Lux level is mentioned as 0.65 Lux @ F1.0, what is not mentioned is the the following data
1. Reflectance of the test Subject
2. Shutter Speed Used
3. AGC used or Not
4. IRE at which the Lux Level was measured

March 5, 2011

How to Analyze the TCP/IP Network for IP Video Surveillance

Over the year i have worked as a system Integrator, later with the distributor and now at the OEM's.. and these are my observations

The system Integrators expectation from the OEM's to resolve the issues faced, helped each OEM's to squarely blame the other for the problems.. by pointing out the immediate cause for the trouble but not analyzing the full issue and concerns. HOW CAN the SI or WHAT MUST the SI Do in such a situation?

March 1, 2011

People Counting Application using the VM1 & VM2 long with IP Notifications

This application was written to demonstrate the use of IP Notify to Count the events triggered. The setup of Alarm Notification (Message 1 and Message 2).

download the files from

People Counting Using IP Notify.zip:
http://mxdemo.dyndns.biz:5000/fbsharing/OSMZ8TDA
http://mxdemo.dscloud.biz:5000/fbsharing/OSMZ8TDA


pls email to tsk.kamath(at)gmail.com for the application or the source code

February 13, 2011

How To Decide The Nos Of Disk on The NAS Or Storage Server Should Have

After working for a Year and studying the various method used by SI to Size a NAS and also noticing the problems they face. I have documented the following
The parameters that are essential for Selecting the NAS or Storage server
The normal process is to use the storage calc and find the total TB for total Nos of Camera and then study the spec of the NAS for the TB of storage.. The difficulty with this approach is that some NAS perform as required and most do not.. We end up blaming the NAS for non Performance but fail to understand that we have sized the NAS incorrectly..
The important param which is very very clear from the various post on the Internet on storage calculations is IOPS.. Unfortunately there is no documentation on this for Video surveillance.
I shall attempt to do so.. pls kindly note I am not an expert in Storage and have no great experience with the various NAS available in the Market.
All expert on storage are welcome to point out any error or technical issues with my documentations