What Is Oblique Photography?

May 12, 2023

Oblique photography technology is a high-tech developed in the field of international surveying, mapping and remote sensing in recent years. By carrying multiple sensors on the same flight platform and collecting images from different angles such as vertical and oblique, more complete and accurate information on ground objects can be obtained.

Main features of oblique photography technology:

(1) Reflect the real situation around the ground objects

Compared with orthophotos, oblique images allow users to observe ground objects from multiple angles, more realistically reflect the actual situation of ground objects, and greatly make up for the shortcomings of applications based on orthophotos.

(2)Oblique image can realize single image measurement

Through the application of supporting software, the measurement including height, length, area, angle, slope, etc. can be directly based on the result image, expanding the application of oblique photography technology in the industry.

(3)The side texture of the building can be collected

For various 3D digital city applications, using the characteristics of large-scale mapping of aerial photography, coupled with the method of batch extraction and texture pasting from oblique images, can effectively reduce the cost of urban 3D modeling.

(4) The amount of data is small and easy to publish on the Internet

Compared with the huge amount of 3D data applied by 3D GIS technology, the data volume of the image acquired by oblique photography technology is much smaller, and the data format of the image can be quickly published on the Internet using mature technology to realize shared applications.