Digitization method of historical aerial photos

Abstract

The embodiment of the invention discloses a digitization method for historical aerial photos, and relates to the technical fields of airport navigation station site selection and construction, urban planning, sunlight analysis, terrain analysis, public safety and photography. The digitization method is used for solving the problems that in the prior art, digitization of the historical aerial photos needs to be completed in a scanning mode, and the working efficiency is low. The digitization method of the historical aerial photos comprises the following steps: shooting a target historical aerial photo through a digital camera, wherein the pixel of the digital camera is not less than a billion level; performing image post-processing on the original image output by the camera to obtain an output image of which the resolution is not lower than 23mu, and digitally storing the output image. The high-resolution large-area-array digital camera is used for shooting the images of the historicalaerial photos, computer post-processing is combined, aerial photography data can be rapidly digitized, the historical aerial photos do not need to be scanned any more, and the digitization efficiencyof the historical aerial photos is improved.

Description

technical field [0001] The invention relates to the technical fields of site selection and construction of an airport navigation station, urban planning, sunshine analysis, terrain analysis, public safety, and photography, and in particular relates to a digitization method of historical aerial photographs. Background technique [0002] The original film of aerial photogrammetry has the characteristics of large format, small deformation and high geometric precision. The accuracy and intuitiveness of its image data have unique advantages, and its historical value is extremely high. Aerial photographic film, as a kind of historical archives, records in detail the changes of landform information such as city scale and facilities. Due to the limited shelf life of film materials, it is necessary to digitize them for permanent preservation. [0003] At present, the digital preservation of aerial photographic data mainly uses high-definition image scanners to scan aerial photograph...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a digitization method of historical aerial photographs, which is used to solve the problem that the digitization of historical aerial photographs must be completed by scanning and the work efficiency is low in the prior art. Digital cameras take images of historical aerial photographs, combined with computer post-processing, can quickly digitize aerial photography data, no longer need to scan historical aerial photographs, and improve the efficiency of digitizing historical aerial photographs

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