How to distinguish photos in photogrammetry line

Photogrammetry lines distinguish photos: The images obtained by aerial photogrammetry can clearly see different objects with different accuracy.

The ground resolution of (1) image is better than 20cm, and it can be used for projects such as 1:2000 scale surveying and mapping, and can identify objects such as stationary cars on the image.

(2) The ground resolution of the image is better than 10cm, and it can be used for projects such as 1: 1000 scale surveying and mapping, and can identify stationary electric vehicles and other objects on the image.

(3) The ground resolution of the image is better than 5cm, and it can be used for projects such as 1:500 scale mapping, and people can still be identified on the image.

biographical notes

Photogrammetry is to obtain the shape, size, position, characteristics and their relationship of objects by processing the photos obtained by optical cameras. The main task of photogrammetry is to make topographic maps of various scales, establish topographic databases, provide spatial basic data for various geographic information systems, land information systems and various projects, and serve non-topographic fields, such as industry, architecture, biology, medicine and archaeology.