Laser point cloud ground object automatic identification method fusing line channel orthoimage
An orthophoto and automatic recognition technology, applied in character and pattern recognition, knowledge-based computer systems, machine learning, etc. Point cloud classification efficiency and other issues
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[0075] S1: Affected by weather, time, UAV flight conditions, etc., there will be color differences within a single image of UAV orthophoto data or between multiple images, as well as shadows of ground objects or orthophotos. Unnecessary shading that affects the classification, for the display of the towers and wires in the orthophoto of the transmission line channel on the image, the classification of the image will produce a huge image. For this reason, it is necessary to perform uniform light and color before classification. Correction of shadows and masked image preprocessing; including:
[0076] S11: Orthophoto uniform light and color, the process is as follows figure 2 shown;
[0077] In the process of orthophoto uniform light and color, an adaptive global-to-local color balance method is chosen to eliminate the influence of color differences between adjacent optical images. This method combines global and local optimization strategies. In the case of specifying a refe...
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