Traditional Culture Encyclopedia - Photography major - What are the differences and connections between digital photogrammetry and conventional surveying, GIS and RS? Seek professional answers ~

What are the differences and connections between digital photogrammetry and conventional surveying, GIS and RS? Seek professional answers ~

Digital photogrammetry is a photogrammetry method to obtain three-dimensional digital information of objects from digital images.

Conventional survey is a kind of survey method to obtain surface landform data by measuring instruments.

GIS geographic information system

Remote sensing is a modern science and technology that collects the electromagnetic wave information of the target without touching the object itself, identifies the target after processing and analysis, and reveals its geometric and physical properties, their relationship and their changing laws.

Conventional measurement of digital photogrammetry Remote sensing is the main way of GIS data source.

GIS is a system for storing and managing remote sensing data of traditional digital photogrammetry.