A fast detection method for the garland area of ​​aerial orthophoto panorama

Abstract

The invention discloses a rapid detection method for the garland area of ​​a panorama of an aerial orthophoto image, which includes loading the original aerial photographic image of the survey area and its inner and outer azimuth elements and the digital elevation model DEM of the survey area, and detecting the corresponding orthonormal of the image one by one. The garland area on the orthoimage, and generate the corresponding binary image of the garland area detection result; simplify the mosaic line network of the orthophoto panorama, and binary the detection result of the garland area in a single orthophoto The image is mosaiced; the binary image of the detection result of the orthophoto panorama is morphologically processed, and it is vectorized and stored as vector data to realize the automatic detection of the orthophoto panorama. Its remarkable effect is: it solves the problems of time-consuming and labor-intensive and artificial omissions of traditional manual visual identification and search, and improves the search efficiency of the garland area in the aerial orthophoto panorama.

Description

technical field [0001] The invention relates to the technical field of aerial photogrammetry image processing, in particular to a rapid detection method for a patterned area in a panorama of an aerial orthophoto image. Background technique [0002] The orthophoto map (DOM) not only has accurate location information but also has rich texture information, and is widely used in the fields of land resources monitoring, geographical and national conditions survey, urban and rural planning, and urban fine management. The digital image of the ground can be taken from the air by aerial cameras, ordinary digital cameras and other equipment on aerial platforms such as drones and large aircraft, and then the orthophoto panorama of the target area can be obtained through aerial photogrammetry internal data processing. [0003] In the office processing, due to the small size of the aerial photographic image and the large image sequence, it is necessary to perform orthorectification on ea...

AI Technical Summary

Problems solved by technology

[0005] However, in the current technology, there are few automatic detection methods for the garland area of ​​the aerial orthophoto image. The existing methods only discuss the automatic detection method of the garland area on a single orthophoto image, and do not solve the problem of the mosaic orthophoto panorama. The problem of automatic detection of the garland area cannot meet the needs of the automatic detection of the garland area in the orthophoto panorama of the measurement area. At the same time, the missing detection rate of the existing method is also very high, and the reliability of the automatic detection results of the garland area cannot be guaranteed.

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