Edge data processing of orthophoto

Aug 22, 2023

Digital orthophoto (DOM) is a set of digital orthophoto that is generated by digital differential correction and Mosaic of aerial (or aerospace) photos, and cropped according to a certain map range. It is an image with both map geometric accuracy and image characteristics. Digital orthographic image has the advantages of high precision, rich information, intuitive and realistic, fast acquisition, etc. It can be used as the background control information of map analysis, and can also extract the information of natural resources and social and economic development from it, providing a reliable basis for disaster prevention and control and public facilities construction planning and other applications. It can also extract and derive new information from it to realize the revision and update of maps.

In order to improve production efficiency, it is sometimes necessary to produce digital orthographic images in batches due to the influence of flight time, measuring area and other factors. At this time, the measurement area needs to be divided into regions, and overlapping photos and common control points need to be left between different regions. In order to ensure the seamless splicing and color consistency of the digital orthophoto between different partitions in the test area, we need to use the retouching software to process the digital orthophoto between different partitions.

In general, in the same survey area, the digital orthophoto is the same scale. The digital orthophoto of the same scale is processed with retouching software to preserve one side of the surface and make the color transition as natural as possible.