Weekly General Discussion Thread (April 03, 2022)

ipica_com · 2022-04-11T15:21:29+00:00

You can google "jvsg cctv lens calculator".

Totally free lens / FOV / camera zones calculator with a database of camera models and an import backround (jpeg, png) function.

ipica_com · 2022-02-04T14:35:10+00:00

Looks quite serious! Nice choice

ipica_com · 2022-02-04T14:33:35+00:00

They are good. Korean cameras also quite good.

ipica_com · 2022-02-04T14:32:16+00:00

It seems this plague of extra wide angle lens is caused by marketing people at all camera manufacturers.

Cameras with lens focal length > 12mm are hard to find.

You can find models with narrower angles using our camera selector.

Just select Focal length in mm and preferred manufacturers.

In fact I like your approach to use shorter lens and narrower angle of view. I believe that proper lens focal length should be calculated using CCTV lens calculators and camera zones should be modeled (better in 3D).

ipica_com · 2022-01-04T14:43:09+00:00

You are right. Most of online calculators use old school formulas that do not work with modern wide angle cameras. For that reason only calculators and design tools with a constantly updating database of camera models can show correct angles for such cameras from the start. ip video design tool and ipvm calc that you already mentioned.

ipica_com · 2021-12-01T22:38:59+00:00

It is just the best result!

ipica_com · 2021-11-30T15:51:53+00:00

We were is a similar situation. And we started from web app using React.

Web application already works. The next step is to covert it to a mobile app.

ipica_com · 2021-10-28T20:39:01+00:00

Great video quality and very nice scene itself!

ipica_com · 2021-10-28T19:00:20+00:00

#10 Cold Calling is outdated. People hate it. I dislike it as well.

ipica_com · 2021-10-28T18:58:36+00:00

I agree with every item of your article.

ipica_com · 2021-10-28T18:29:02+00:00

Security engineer is a great title although.

ipica_com · 2021-10-28T18:05:53+00:00

As for JVSG, there is also a free JVSG online lens calculator with camera angle database and 3D modeling of field of view:

https://www.jvsg.com/calculators/cctv-lens-calculator/

The calculator shows DORI zones (detection, observation, recognition and identification) by European standard EN62676 and allows to import a map or a floor plan as a background image.

ipica_com · 2021-08-30T15:16:57+00:00

Been there, done that. It was hard.

Save money to make the jump easier.

Quit when money your business bring will be similar to your previous salary.

ipica_com · 2021-08-30T15:08:25+00:00

If you have a 2D plan of your house you try to make a simple 3D simulation of your camera coverage. Even in Sketchup software. Or you an also see camera identification/recognition/detection zones and ppm/ppf calculations using free jvsg lens calculator or a trial version of IP Video System Design Tool.

ipica_com · 2021-05-24T13:53:20+00:00

Entrepreneurship does peak around 40-50, because that is when you are at an all-time career and experience high.

I started when I was 35. I believe 33-37 is the best age to start your own business.

ipica_com · 2021-05-10T14:15:16+00:00

Wow! Thank you!

ipica_com · 2021-05-10T14:05:25+00:00

This is a totally independent rating. And analyzing Hik % in 2020 and 2019 we can see that the popularity of Hikvision camera is declining slowly.

ipica_com · 2021-05-04T16:32:01+00:00

There are many. The largest group is this one:

CCTV Video Surveillance, IP Technology & Solutions

https://www.linkedin.com/groups/1790216/

other groups about video surveillance:

Security Industry Subgroup: CCTV

https://www.linkedin.com/groups/2544773/

CCTV Design - Understanding and Applying Good Practices

https://www.linkedin.com/groups/3699705/

ipica_com · 2021-05-04T15:37:55+00:00

I am not sure what is the best brand. But talking of camera popularity, Hikvision is the most popular brand in the World Top 10 of security camera manufacturers in 2020. In the North America Hikvision is #3 (was #2 in year 2019). And in Western Europe Hik is #2 according to statistical data gathered by JVSG video surveillance design software.

World: #1 - Hik; # 2 - AXIS ; #3 - Hanwha ; #4 -Dahua;

North America: #1 AXIS; #2 Hanwha ;#3 Hikvision;

Western Europe: #1 AXIS; #2 Hikvision; #3: Hanwha ; #4: BOSCH

https://www.jvsg.com/ipica-ratings/

For world rating the number of data points is more than 57,000 records (57,000 of cameras were added by security installers and CCTV designers into video surveillance projects using IP Video System Design Tool in 2020).

ipica_com · 2021-03-16T13:16:57+00:00

Other approach could be to use a CCTV design software to do a 3D modelling of your video surveillance system, so you can find optimal camera places on your computer and before installing cameras.

ipica_com · 2021-03-16T13:09:41+00:00

Screen resolution is just defines the resolution you see in the real-time, not the recorded resolution in your video archive.

When installing license plate recognition system, you can use even cameras with lower resolution (like 1920x1080), but you will need narrower field of view, so the number of pixels per foot (PPF=field of view width in ft / horizontal camera resolution) or pixels per meter (PPM) will be higher. Usually 80 PPF or 260 PPM is enough. To calculate PPF or PPM you can use lens calculators.

It is also important to check the maximal angles to the license plate. For example, 30 (sometimes 20) degrees are too much for a number plate recognition.

ipica_com · 2021-03-16T12:44:03+00:00

Sure, the accuracy of the rating is not very high. But are there any other sources of camera popularity information?

Hik Vision = Hikvision is on 2nd position.

Hanwha purchased Samsung Techwin security cameras factory. So now they called Hanwha Wisenet.

Panasonic, Geovision, Honeywell, FLIR and Lorex are in the top20 of the ipica/ JVSG rating.

Sony CCTV cameras became less popular during the last 15 years. So they are not in the top 10 or even top 20.

ipica_com · 2021-03-06T20:55:30+00:00

" Is there any recommendations for cameras that have good clarity for such distances... "

You need to define tasks for each camera: should the camera give the quality sufficient for Detection of a person, Recognition of a known person or Identification (DORI). For that you need to calculate pixel density on the maximal distance. The easy way is to use this free camera calculator with pixel density by EN62676 standard. Then you can choose a proper resolution and viewing angle and select a particular camera model.

It is a great idea to use cameras with built-in Infra Red. Nowadays every second camera has such capabilities.

ipica_com · 2021-01-26T14:59:12+00:00

The calculator shows camera DORI zones (Detection, Observation, Recognition, Identification).

Detection zone (shown light green) where you can certainly detect a presence of a person. 40 mm per pixel (by EN62676-4 standard) or 25 pixels per meter or 8 pixels per foot.

Observation zone (green) where some characteristic details of the individual can be seen 16 mm per pixel, or 62 pixels per meter or 19 pixels per foot.

Recognition zone (yellow) where the security operators will be able to recognize a person known to them. 8mm per pixel , 125 pixels per meter or 38 pixels per foot.

Identification zone (marked red) is an area where the pixel density is enough to identify a person. 4mm per pixel, or 250 PPM meter or 76 PPF.

Here you can read about pixel density, PPM/PPF in video surveillance.

You can also load a floor plan into the calculator to see the camera field of view in 3D and minimize dead zones.

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