Building facade measurement is not only the core project of upgrading old buildings and building 3D model construction in digital city construction, but also the urgent demand of ancient building protection and obtaining new building facade results. At present, the difficulties of building facade measurement are mainly reflected in the following two points: first, the building facade measurement requires a high degree of detail refinement, it is difficult to obtain data and the measurement efficiency is low due to the various features of architecture. Second, the building facade measurement task is large and the time cycle is short. Traditional building measurement methods such as theodolite intersection method, total station prism-free measurement, rangefinder and steel ruler measurement have serious shortcomings of low efficiency.

With the development of 3D laser scanner technology, TLS360 3D laser scanner brings new solutions for building facade measurement. Its compact, portable and fast scanning characteristics can effectively improve the scanning efficiency.

The main steps of building facade measurement based on TLS360 portable 3D laser scanner include: field survey -- design frame site, data collection -- data scanning of each site, internal mapping -- manual drawing. TLS360 can quickly obtain fine and dense surface point cloud data of building facades, meeting the requirements of measuring precision, efficiency and accuracy of building facades measurement.