How much do you know about starlight and low illumination

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From the camera function classification;

How much do you know about starlight and low illumination;

At minimum illumination camera is a camera that can capture clear images in low light;

But due to there are no uniform international standards;

So each large image sensor manufacturer has its own measurement standards;

As we said starlight level camera is a level of low illumination camera;

Low illumination is usually divided into: 0.1Lux-Dark level;  0.01Lux- Moonlight level;  0.001Lux and below-starlight level ;

So to speak, the starlight camera is one that does not have any auxiliary light source in the starlight environment;  the camera can still display full color images；it’s a series of cameras launched to solve the image problem in low illumination environment;

Categories of night monitoring cameras

Well, besides the starlight camera, what other common minimum-illumination cameras are there?

What are the different functional advantages of starlight cameras and other minimum-illumination cameras?

HD IR night  vision camera

Infrared night vision cameras are mainly used in a dark environment without visible light or low light.

The infrared light is used to actively project infrared light onto the object, and the infrared light is reflected by the object and enters the lens for imaging.
So this method has become the most common application solution with its most mature technology, widest application range, and highest cost performance.

White light night vision camera

However, the infrared night is regarded as a black and white picture, and the image range is limited by the irradiation distance of the infrared lamp.

In some special shooting environments, there will be the disadvantage of unclear details such as faces and license plates.

For example: the license plate in the picture below is completely invisible due to infrared reflection

Considering the above possible problems and the need for license plate shooting,  some company launch some starlight full color cameras  to solve this problem ,

Warm light  minimum illumination cameras  or super starlight full color cameras

Starlight full color camera’s feature and advantage:
In actual application scenarios, infrared light cameras are limited by black and white images and shooting distances, and white light cameras need additional light supplementary tools, which cannot really meet the shooting needs of scenes under low illumination. Therefore, many manufacturers follow

Cameras with super-sensing image sensors will be launched.

The so-called image sensor is like the retina of the human eye to the camera.

To give a familiar example, the reason why a cat can perceive the actions of a mouse in the dark is largely because its retina is very sensitive to light, except for its large pupils.

Very weak light is enough for it to see its surroundings clearly. environment of. Compared with the low illuminance of ordinary network cameras, the starlight level camera has better effect and can meet the requirements of starlight level (under the star illuminance environment of 0.001lux and below, without any auxiliary light source, it can still display clear color images. )

At the same time, in line with the current development trend of H.265, the concept of H.265+ starlight is more suitable for the needs of the current starlight market, and its effect is more popular than ordinary starlight.

For example, XZ-A6-MS10 the H.265 starlight product recently launched by Zhongwei Century.

 

Five minutes to understand the monitoring system (about camera)

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Safety is an extremely important part of our lives, however, how to choose a high-quality security monitoring products, for many consumers in need, it is a big problem, because the security manufacturers provide so many specifications, it seems mysterious, do not understand the actual quality of the product, in order to help consumers to understand the different performance of various equipment, we prepared the following article.

When purchasing security monitoring products, you must understand the current monitoring system category firstly. Current security monitoring system, can be divided into traditional analog, analog HD (analog high definition) and IP ranges. Analog system is the industry’s first development of the system, but also in the past market the most widely used goods. In order to solve the shortcomings of the analog system pixel defects, comes AHD, CVI, TVI etc Analog High Definition System. The IP system is one of the high definition system which has been promoted before above three mentioned analog HD system. IP system is relying on network streaming, it has a considerable advantage in different systems integration, which is the biggest difference compare to the analog system and AHD, CVI, TVI system.

1. Camera components
Firstly need to understand the image sensor. Image sensor also known as camera components or camera chip, it is like a solar panel, the larger the area, the greater the amount of light, the better illumination as night.

Image sensor can be divided into CCD (charge-coupled components) and CMOS (complementary metal-oxide semiconductor).As we known CMOS has the advantages of low power consumption, low cost, signal processing, but because of its line design is too dense, resulting in excessive noise interference, so the traditional analog camera use more CCD components, in recent years since the development of CMOS anti-turbid technology, the image of the interference signal has been improved a lot , the advantages began to emerge, nearly all systems began to use CMOS components, so that CMOS has been the main trend of camera chip.

2. Pixels
Pixel is also a common specification for surveillance cameras, pixels are composed of dot-like elements, the basic unit for the image display, the more dense the structure the more delicate image quality. When talking about pixels, it refers to the total image of the camera chip image, however for IP system, it refers to the camera network maximum streaming output, because the pixels are by the number of horizontal single points multiplied by the number of vertical single points. In the same technology and environment, the higher the pixel image, the better visual quality presented.
In the past, the CCD is the way of presenting the interlaced scanning, that is, scanning the odd rows first then scanning the even lines. Therefore, the horizontal lines appear with many jagged, and the CMOS is the image of the progressive scan. It is in accordance with the order of scanning, to avoid the horizontal line of the jagged phenomenon.
Although the current monitoring are competing towards more and more high-definition development, unless it is high-end application market, the need to use digital amplification, or mega pixels in fact is able to cope with most of the needs. Also must be reminded that high-quality images must be with the appropriate resolution monitoring screen, if the screen resolution is not enough, can not achieve desired monitoring effect.

3. Minimum illumination
The lower the illuminance, the better the night vision, but it must be noted that generally what we see the camera illumination, have to work with the lens through F, for example: 001LUX / F1.2 or 001LUX / F1.6, it means this low illumination is achieved in a specific light transmission ratio of the lens. The lower the light transmittance of the lens, the less the amount of light transmission on behalf of the lens.
Let’s take mall discount for example, it will be more easy to understand. For a F1.2 light ratio, the original price is 100 yuan, but because of it offers an 20% discount, so only need to pay 80% of the money, and the rest of 20% is disappearance; so for a F1.6 light ratio, 60% is disappeared, so the lower the lens light transmission ratio, the better the light. Assuming that the two cameras have the same effect of illumination, but one is with a low light transmittance ratio, that is, a good amount of light into the lens to achieve, the other is with a high light transmission ratio, that is, a poor amount of light into the lens reached, then we can say with a high transmittance than the lens camera, in the low light like the ability is more excellent. This is often overlooked in many of the industry’s low performance.

4. Signal to noise ratio
In the selection of the camera, the signal to noise ratio is also very important, the higher the value of its anti-noise ability (D-NR:Digital Noise Reduce), the better, but how to tell it is good or bad? At this point must mention the automatic gain control (AGC) firstly. This function is mainly designed for environments with insufficient illumination. When the environment brightness is not enough, the AGC will automatically start to enlarge the image signal. At this time, the user can find that the screen is brighter. However, when the image signal amplification, the noise will be followed by amplification at the same time, so when test signal to noise ratio, you must turn off the AGC function firstly. So how to test it? Firstly prepare the light brightness regulator, set the camera in full color state, when the light regulator gradually closing, at this time the first picture of noise ratio, is the statue of low signal to noise ratio, this is the most simple way to tell signal to noise ratio good or not.

5. White balance
“White Balance” is an important concept about the color of the camera. White balance is the function to balance the white light, so that the color does not look distorted, not partial yellow or reddish and bluish, the type of white balance can be divided into automatic white balance (AWB) and automatic color temperature tracking white balance (ATW). Generally speaking, automatic white balance (AWB), is automatically based on white, to adjust the white to no distortion, the other color is almost accurate.
However, the shortcoming is when sunrise and sunset, since the ambient light source changes are too much, it will cause color temperature error and distortion, must wait for the next sunrise or sunset then will have the opportunity to return to normal color temperature. ATW is the use of DSP digital processing technology, can auto track color temperature according to exposure objects, because the color temperature is in the DSP color temperature range, either less than or higher than it , the color will not be true. In summary, the two white balance has its advantages and disadvantages, but now most of the manufacturers default ATW.

 

Security Cameras, Secure Your World Together!

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1. Security Cameras for Business
For vigilant business owners, Xonz connects you to your entire property, giving you peace of mind that your life and loved ones are secure. With multiple viewing, monitoring and recording options, Xonz puts you in control, creating a security video camera system that works within your property, parameters, and preferences.
ZTV VISON gives you the confidence that every angle of your home, property or business can be covered, and that you can be alerted when you need to be, wherever your busy life takes you.

2. Keeping an eye on your business
Building a business is hard; keeping an eye on that business is easy with ZTV VISON. Protect what you’ve built with reliable recording and remote connectivity on any device.

3. Super Resolution
You never have to guess what’s going on at your place of business — day or night — with our super-resolution cameras. ZTV VISON business security cameras offer improved sharpness, clarity, and detail under all light conditions, and capture detailed video footage any time, all of the time.

4. Ultimate connectivity
With your Lorex security camera system for business, you can keep an eye on your property via your smart phone, tablet, PC, or Mac. View and control your system from anywhere in the world, and see live video within seconds. With ZTV VISON, you’ll never be in the dark again.

5. 24/7 Peace of Mind
With our fully integrated system, you can keep an eye on your business twenty-four hours a day, seven days a week. Its compact size and powerful performance, as well as its capacity for continuous recording of weeks — and even months — of activity, make it a great solution for all your surveillance needs. Easy set-up wizards, intuitive navigation, touch operation, the capability to back up your recordings, instant email alerts, and dedicated apps provide ultimate security in a simple, easy-to-use package. You need never worry about business security again.

Should a single woman install cameras in a rental house?

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According to an estimate, the total number of rental house is increasing. There could be many reasons for this kind of situation. Initially, the total rise in private home prices has made many people drop the idea of buying a house. As a single woman under 30, almost of us can’t afford to buy a house, then we always rent an apartment in a strange city. Working hard to fight for a better life. Tired, hard and lonely.

As a saying goes, if you do not get hurt or sick, you earn money. But we still live in a unstable and dangerous environment. Like our rental house, I think many people have been stolen money and valuable stuffs, like computer by unexpected thief. We also see many news, like burglary, raping, or peeking when taking a shower. And there is, single women are often the main targets of crime.

Then how to make yourself bigger and stronger? You may need a little helper. This is called cctv security cameras. You can install it in your bedroom, window and front or back door. To simplify the installation, it has the bracket, easy to install.

Why I introduce this model? Because it’s wireless connection, called wifi ip camera. 1080p, the resolution is very clear. With Ap function, the camera has the wireless spot itself, so it doesn’t need to connect with network cable. It has a mobile App, called iCute Cam, that you can watch video in your mobile.

The most important is it has alert function, even if you are 100km far from your home, when someone break your door and get into the house, you can see what happened by your mobile App, and receive an alart message. So you can know who breaks the house, what are they doing, and call the police in time.

With starlight function, the camera can show color vision even in the night.

Considering all the factors in mind, it is evident that wifi ip cameras will allow you to monitor your renting house. Only this way, you will become aware of any kind of odd activity. Additionally, you have put surveillance on someone with whom you doubt. The installation of a housing security camera will increase your initial security. Furthermore, you can keep an eye on everyone passing by and help others in the process. A security camera will act as your digital guard. It will protect you and your family from a lot of danger, it is necessary to monitor the house day and night.