Image control point acquisition method and device based on CORS station
An acquisition method and image control point technology, which is applied in the field of image control point acquisition based on CORS stations, can solve the problems of many acquisition sources, redundant information, and inability to directly apply image control points, so as to improve acquisition efficiency and reduce Get Difficulty Effects
Pending Publication Date: 2022-03-29
河北省自然资源档案馆
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The continuous and stable operation of the CORS station has produced a large amount of high-precision positioning point data. These positioning point data are different from the positioning data obtained by traditional positioning applications. The plane accuracy is better than 3cm, and the elevation accuracy is better than 6cm. Ground base station erection and image control point requirements, but CORS station continuous positioning points have problems such as large amount of data, redundant information, and many collection sources, which cannot be directly applied to image control points. Therefore, how to mine and extract high-precision usable Image control points, replacing manual selection of image control points or field surveying and mapping, have important application value
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[0054] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.
[0055] In the present disclosure, the described embodiments are some of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.
[0056] In the description of the present disclosure, it ...
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The invention provides an image control point acquisition method and device based on a CORS station, electronic equipment and a storage medium. The method comprises the following steps: acquiring an initial track sequence of a plurality of CORS station receivers, wherein the initial track sequence comprises a plurality of positioning points sorted according to acquisition time; performing trajectory simplification on each initial trajectory sequence to obtain a plurality of simplified trajectory sequences, wherein the simplified trajectory sequences comprise positioning points located at the head, the tail and the inflection points of the initial trajectory sequences; performing clustering processing on the positioning points in the simplified track sequence, and taking a clustering center as an initial image control point; and carrying out thinning processing on the initial image control points by utilizing a grid optimization method to obtain the image control points. According to the method, the positioning points are obtained through the CORS station, automatic extraction of the image control points can be achieved through merging, thinning and clustering, the obtaining difficulty of the image control points is reduced, and the obtaining efficiency of the image control points is improved.
Description
technical field [0001] The present disclosure relates to the technical field of image control point acquisition, in particular to a CORS station-based image control point acquisition method and device. Background technique [0002] Image control points are basic surveying and mapping control data for remote sensing image correction, photogrammetry analysis, aeronautical three-dimensional measurement, and UAV aerial survey correction. The number and accuracy of image control points directly affect the usability of basic surveying and mapping products. How to collect image control points is a Research focus for those skilled in the art. [0003] At present, the image control point data is usually obtained by the method of field collection and internal correction. This method requires a large number of field surveyors to carry out field surveying and mapping in the survey area, and at the same time requires a large number of data corrections from internal data producers. Image...
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Login to View More IPC IPC(8): G01S19/07G01S19/41G01S19/43G06V10/762G06K9/62
CPCG01S19/071G01S19/43G01S19/41G06F18/23
Inventor 王新广梁丽芳王燕云张恒才吴文坛李保宁张娜耿云峰
Owner 河北省自然资源档案馆