The resolution IP cameras. How to choose?
How to define a sufficient resolution IP camera? About it in our video
Nowadays with the advancement of technology the video camera with high resolution more and more popular in projects. Given the fact that camera, for example 1Mpix and 2Mpix is not much difference in price there is temptation everywhere to install mnogokasatelnoy camera.
Advantages high resolution:
- more information about what is happening in the frame
- above detail of objects
- the ability to identify objects (persons, cars, etc.
Everything seems to be fine. But working with high resolution has a number of difficulties:
1. The increase in the load on the local network;
2. The increase in the load on the equipment of video surveillance system;
3. Increasing the size of disk space for storing video archives.
All this leads to additional costs for the system, the cost of switching and server equipment, the cost of the storage subsystem.
If to speak about surveillance on the perimeter or in the dark, it should be mentioned that the camera with high resolution and less sensitive at night can be very "noisy".
In summary: how to choose the right resolution?
There is a clear criterion is the pixel density. It is accepted to allocate three tasks of video surveillance:
1. Detection
To locate an object at a given distance and determining their type: person, vehicle, animal, etc.
Here of 20 pixels/m
2. Recognition
Discernment will object: the color and type of clothing, gender, hair color and hairstyle
In this case, you need at least 100 pixels/m
3. Identification
The identification of the person in the image
This task requires a density of 500 pixels/m
After determining the resolution for each camera based on the task, you can select the camera resolution.
Based on our experience we can formulate the following specific recommendations on the choice of resolution depending on the task to be solved:
• if you have a corridor in the office, interior, emergency exits, utility room, one is enough megapixels, or even less;
• if this is the entrance to the business centre, survey camera surveillance in the warehouse, production, you will need two or three megapixels;
• for standard surveillance on the perimeter will be enough one, a maximum of two megapixels. Good fast lens, and not a permission;
• camera 5 Mpix and 8 let us leave for the Palace of congresses, a well-lit large spaces, and other specific tasks.
I hope that these tips will help you and your customers to make more informed and reasoned decision when ordering or designing video surveillance systems.
We have previously talked about optimizing the speed of video capture • Оптимальная скорость видеоввода с IP-... . With the release of this video from specialists in the installation of video surveillance systems has the complete picture and necessary information to build a really effective and optimal security systems.
Subscribe for new videos http://www.youtube.com/subscription_c...
All for the designer IP video surveillance: http://www.videomax-server.ru/support...
Web page http://www.videomax-server.ru/
Our page on facebook / videomax.server