According to the classification standard, the classification is as follows:
1. According to different transmission signals, it can be divided into analog cameras and digital cameras;
2. According to the different screen resolutions, it can be divided into the standard-definition camera and high-definition camera;
3. According to the shape of the camera, it can be divided into the spherical camera, hemispherical camera, and gun camera;
4. According to different installation environments, it can be divided into indoor cameras and outdoor cameras;
5. According to different sensors, it can be divided into a CCD camera and a COMS camera.