Camera classification of photographic system

Its main body is a camera, which can be roughly divided into two categories according to its use:

(1) measuring camera. Such as various aerial cameras and space cameras, which are mainly used for topographic mapping;

② 。 Such as panoramic cameras for reconnaissance and multispectral cameras for remote sensing of resources and environment. There are three types of cameras: frame camera, panorama camera camera and slit camera.

According to the different structures, the types of frames can be divided into single lens type (such as measuring camera) and multi-lens type (such as multi-spectral camera); Panorama is divided into lens rotation type and prism rotation type.

According to the structure and combination of objective lens, color filter and photosensitive film, multispectral cameras can be divided into:

① Multi-camera type. It consists of several cameras equipped with corresponding color filters and photosensitive films to obtain multi-band images;

② Multi-lens single film type;

③ Dan Toujing multi-film type, that is, beam splitting type.

No matter what type, the obtained multi-band images must have high overlapping accuracy, so that they can be registered with each other and combined into color or false color images.