How to classify cameras?

What are the classifications of surveillance cameras?

Divided by camera resolution:

1, the image pixel is about 250,000 pixels, the color resolution is about 330 lines, and the black and white resolution is about 420 lines.

2. Image pixels are between 250,000 and 380,000, with color resolution of 420 lines and black-and-white resolution of 500 lines.

3, the image is more than 380,000 points, the color resolution is greater than or equal to 480 lines, the black and white resolution, and the high resolution is greater than 570 lines.

Correlation difference

1, using

Ordinary cameras mainly refer to cameras used for online chat, and surveillance cameras mainly refer to security cameras specially used for video surveillance.

First of all, ordinary cameras are mainly used for video chat, photography and other activities, and are applied to daily life. Surveillance cameras are mainly used for a series of security activities such as security inspection, real-time control, investigation and evidence collection. Secondly, surveillance cameras are all remotely and wirelessly controlled, but ordinary cameras are not.

2. Function

The main target of an ordinary camera has clear directivity, and it is usually carried out with the knowledge of the other party. The monitoring camera is mainly suitable for real-time monitoring, which is usually carried out under the condition of knowing nothing or half knowledge about the object.

What kind of cameras do you have?

There are different classification methods.

1, analog camera and digital network camera 2, infrared camera, wide dynamic camera and low illumination camera.

3. Hemispherical cameras, gun cameras, ball machines and UFO cameras. 4. Construction machinery and household cameras.

5. Construction machinery and industrial machinery

Classification and characteristics of cameras?

(1) Radio and TV camera

According to their different performances and uses, they can be divided into broadcast level, business level and home level.

Broadcast camera: it is the most advanced camera, mainly used in the field of radio and television. The picture quality is the best, the color and gray level are very realistic, and there is almost no geometric distortion. It has a good dark field image. Within the allowable working range, the image quality changes little, the performance is stable, the degree of automation is high, the remote control function is comprehensive, the volume is slightly larger, and of course the price is the highest.

Business camera: mainly used in audio-visual education, closed-circuit television, industry, medical care and other fields. The picture quality is lower than the broadcast level, and it is cheap, small and light.

Home camera: mainly used for home entertainment, such as travel, weddings, birthdays, parties and other occasions, with average picture quality and low price. But it is also useful in program production, for example, amateurs encounter some unexpected events, scenes shot with home computers, or some interesting wonders.

Sometimes it is distinguished by the production method;

The camera used in the studio (ESP) has the best picture quality, the highest definition, the largest signal-to-noise ratio and a slightly larger size.

Live program production (EFP) camera. The picture quality is slightly lower than that of the camera used in the studio, and it can be powered by batteries and alternating current; It can be used for both ENG and studio.

Electronic news gathering (ENG) camera is mainly used in outdoor working environment, which requires small size, light weight, portability, flexibility and simple operation.

(2) Special camera

Besides radios and televisions, other uses can be called special cameras. Such as industry, transportation, medical care, commercial monitoring, image communication and so on.

This kind of camera is light in weight, cheap in price and average in picture quality, but it often has special functions, such as monitoring traffic at night, using a camera with high sensitivity to infrared rays and using a camera with high sensitivity to X rays in medicine.

Some aspects can also be used in the production of TV programs.

2. Classification according to camera equipment

According to the types of camera devices, cameras can be divided into two categories: camera tube cameras and solid-state cameras.

The quality of the camera tube is often measured by the target material of the camera tube. Lead oxide is often used as the target of broadcast camera, which is called alumina tube camera. It has good image quality, high sensitivity and good photoelectric conversion linearity. Se, As and Hu chalcogenides are commonly used as targets of commercial cameras, which are called Se-As weighing tube cameras. Their image quality and performance are very good, and their prices are also very low.

The photoelectric conversion of solid-state cameras is completed by semiconductor cameras, and the cameras for broadcasting and television are composed of charge coupled devices (CCD). There are three main ways: inter-row transfer, referred to as IT; Frame transmission mode, referred to as FT mode; Frame-to-line transmission mode, also called FIT mode.

3. According to the number of camera equipment

L) three tubes and three cameras

The camera uses three camera tubes or three CCD chips to generate three primary color signals respectively, which can obtain high image quality, good color reproduction, high definition and high signal-to-noise ratio, and is used in broadcast and business cameras.

2) Two picture tubes and two cameras

Its picture quality is lower than three shots, and the price is not cheap. This is a transitional mode.

3) Single tube and single chip cameras

The camera uses a camera tube or CCD chip to generate signals of three primary colors of red, green and blue by special methods. The image quality is average, and it is mostly used in monitoring systems and home entertainment cameras.

4. Classification according to the size of camera equipment

The size of camera equipment is directly related to the image quality. Large size, more effective pixels, image clarity will naturally be good, sensitivity will be high, of course, the volume will be large.

The camera tube camera is measured by the diameter of the camera tube, and the CCD camera is measured by the diameter of the tube whose photosensitive area of the CCD chip is equal to the target area of the camera tube.

5/4 inch CRT camera

The largest camera tube camera has the best sensitivity and clarity and the largest volume, so it can only be used as a studio camera.

1 inch tube camera

Its definition and sensitivity are slightly lower than that of 1 inch CRT camera, and its size is slightly smaller, so it can be used as a camera for studio and live program production.

2/3 inch CRT camera

With good image quality, small size and light weight, it can be used as a camera for studio and live program production, and is more widely used in electronic news gathering.

1/2 inch tube camera

Most of them are monocular cameras with low image quality, which are used as household cameras.

2/3 inch CCD camera

With good image quality, it is the most widely used in radio and business cameras.

1/2 inch CCD camera

Three-film format, good image quality, can be used as a business camera; Monolithic form, can be used as a home camera.

5. Integrated camera

Integrated camera is a kind of equipment that combines video camera and video recorder. Detachable camera is a kind of camera with camera accessories, which can be used as a camera alone; An inseparable camera is a complete combination of a video camera and a video recorder, and they are inseparable. Such as household palm treasures.

A detachable camera is a combination of a video camera and a professional video recorder. For example, Sony DSR- 130p is a combination of DSR-D30 camera and 1P video recorder.

6, according to the signal way points

According to signal mode, it can be divided into analog camera and digital camera.

Analog camera: The output is analog.