CN108596153A - Remote sensing image defends piece vertical control point extraction method and data processing method - Google Patents
Remote sensing image defends piece vertical control point extraction method and data processing method Download PDFInfo
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- CN108596153A CN108596153A CN201810444027.8A CN201810444027A CN108596153A CN 108596153 A CN108596153 A CN 108596153A CN 201810444027 A CN201810444027 A CN 201810444027A CN 108596153 A CN108596153 A CN 108596153A
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- G06V10/24—Aligning, centring, orientation detection or correction of the image
- G06V10/247—Aligning, centring, orientation detection or correction of the image by affine transforms, e.g. correction due to perspective effects; Quadrilaterals, e.g. trapezoids
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Abstract
The invention discloses a kind of remote sensing images to defend piece vertical control point extraction method and data processing method, includes the following steps：The first step, acquisition survey area's high score remote sensing image and defend piece and analyzed, and count its attribute information and are stored in tables of data；Second step is defended piece to high score remote sensing image and is pre-processed；Third step defends high score remote sensing image panel region net adjusted data, obtains the orientation parameter after tentatively refining；4th step defends on piece extraction laser facula region in high score remote sensing image；5th step has laser light macular area the high score remote sensing image of overlapping to defend piece progress dense Stereo Matching, generates DSM；6th step, the System level gray correlation for calculating each facular area DSM elevations；7th step, according on facular area DSM three-dimensional coordinate point and orientation parameter calculate the three-dimensional point corresponding picpointed coordinate on image, and the height value of the three-dimensional point is modified.This invention removes the harmful effects such as radiation error, deformation of image, reduce workload and complexity that field operation measures work.
Description
Technical field
The present invention relates to Surveying Science and Technology fields more particularly to remote sensing image to defend the piece vertical control point side of automatically extracting
Method and data processing method.
Background technology
With the development of the social economy, three-dimensional geography information is in urban planning, environmental protection and geological prospecting
Etc. be widely used.And with the high speed development of remote sensing satellite technology so that space photogrammetry becomes after boat
The means of another empty photogrammetric rear quick obtaining three-dimensional geographic information.Currently, the research of satellite altimetry is mainly concentrated
In developed countries such as America and Europes, and the development of other countries' technology falls behind relatively, and China is loaded with the satellite for surveying high sensor at present
There are No. three satellites of HY-2A and resource, wherein No. three satellites of resource are the high-precision civilian stereoplotting satellites in first of China, it
It succeeds in sending up and has broken the situation that China relies on foreign high-precision satellite image for a long time.But due to optical stereo satellite stereoplotting
The reason of mode, Satellite Attitude rail measurement accuracy and camera distortion etc., cause it under conditions of Pillarless caving, it is high
Journey measurement accuracy is difficult to meet the needs of high-precision is surveyed and drawn.
Ground control point is generally divided into horizontal control point and vertical control point, as number of patent application is
CN201310143369.3, patent name are the patent of invention of " multi-source heterogeneous remote sensing image control point automatic acquiring method ",
Technical solution is：Include obtaining remote sensing image from the multiple data sources handled by geometric exact correction；Remote sensing to the acquisition
Image carries out analytic induction, counts and analyzes its attribute information；Grid design, root are optimized to the remote sensing image of the acquisition
Image is divided into various sizes of grid according to image resolution, breadth；It is converted to the image in each grid using Wallis
It is pre-processed；Image after Wallis conversion process is enhanced, integrated use Moravec operators, Harris operators,
Forstner operators, SUSAN operators, scale invariant feature and most stable extremal region detection algorithm extract characteristic point；With control
Image film acquisition window is put to traverse the number of statistical nature point, it is pickup area to select the maximum window of characteristic point quantity；Needle
Preservation is cut to selected pickup area progress remote sensing control point image film, while the number for obtaining its corresponding region is high
Journey model data.The patent can automatically extract remote sensing control imaging point from multi-source heterogeneous image, improve control data acquisition
Precision, but its essence still be a kind of automatic acquiring method of horizontal control point.
Invention content
In order to overcome in the prior art remote sensing image defend defect existing for the extraction and data processing of piece vertical control point, this
Invention provides a kind of remote sensing image and defends piece vertical control point extraction method and data processing method, greatly reduces field operation
The workload and complexity for measuring work, have saved manpower and financial resources.
In order to achieve the above-mentioned object of the invention, technical scheme is as follows：
A kind of remote sensing image defends piece vertical control point extraction method and data processing method, includes the following steps：
The first step, acquisition survey area's high score remote sensing image, which defends piece and defends piece to high score remote sensing image, to be analyzed, its attribute letter is counted
Breath is stored in tables of data；
Second step is defended piece to high score remote sensing image and is pre-processed, including atmospheric correction, just penetrates correction and topographical correction；
Third walks, and defending piece to high score remote sensing image carries out block adjustment, obtains the orientation parameter after tentatively refining；
4th step defends on piece extraction laser facula region in high score remote sensing image；
5th step has the high score remote sensing image of overlapping to defend piece laser light macular area and carries out dense Stereo Matching, generate DSM；
6th step calculates the System level gray correlation of each facular area DSM elevations according to time offset and laser propagation speed, according to DSM
Elevation system is poor, refines and extracts the characteristic point on DSM as vertical control point；
7th step, according to the three-dimensional coordinate point and orientation parameter on facular area DSM, using the geometrical model of image calculate this three
Dimension point corresponding picpointed coordinate on image, and the height value of the three-dimensional point is modified, after image picpointed coordinate and amendment
Height value partner image vertical control point.
The attribute information includes image format, image resolution and coordinate system.
The atmospheric correction uses ATCOR3 atmospheric correction models, just penetrates correction and rational function model, landform is used to correct
Using cosine correction method.
Transmitting and reception waveform to laser carry out smooth and denoising, waveform feature parameter are extracted, according to laser
Defeated time interval calculates laser one-way transmission initial distance value.
Beneficial effects of the present invention：
（1）The present invention defends piece to high score remote sensing image and has carried out atmospheric correction, just penetrates correction and topographical correction, eliminates radiation and misses
Difference, the influence of deformation of image and landform to Remote Sensing Reflectance.
（2）The present invention provides remote sensing images to defend piece vertical control point extraction method and data processing method, significantly
Reduce workload and complexity that field operation measures work, saves manpower and financial resources.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1
A kind of remote sensing image defends piece vertical control point extraction method and data processing method, includes the following steps：
The first step, acquisition survey area's high score remote sensing image, which defends piece and defends piece to high score remote sensing image, to be analyzed, its attribute letter is counted
Breath is stored in tables of data；
Second step is defended piece to high score remote sensing image and is pre-processed, including atmospheric correction, just penetrates correction and topographical correction；
Third walks, and defending piece to high score remote sensing image carries out block adjustment, obtains the orientation parameter after tentatively refining；
4th step defends on piece extraction laser facula region in high score remote sensing image；
5th step has the high score remote sensing image of overlapping to defend piece laser light macular area and carries out dense Stereo Matching, generate DSM；
6th step calculates the System level gray correlation of each facular area DSM elevations according to time offset and laser propagation speed, according to DSM
Elevation system is poor, refines and extracts the characteristic point on DSM as vertical control point；
7th step, according to the three-dimensional coordinate point and orientation parameter on facular area DSM, using the geometrical model of image calculate this three
Dimension point corresponding picpointed coordinate on image, and the height value of the three-dimensional point is modified, after image picpointed coordinate and amendment
Height value partner image vertical control point.
Embodiment 2
A kind of remote sensing image defends piece vertical control point extraction method and data processing method, includes the following steps：
The first step, acquisition survey area's high score remote sensing image, which defends piece and defends piece to high score remote sensing image, to be analyzed, its attribute letter is counted
Breath is stored in tables of data；
Second step is defended piece to high score remote sensing image and is pre-processed, including atmospheric correction, just penetrates correction and topographical correction；
Third walks, and defending piece to high score remote sensing image carries out block adjustment, obtains the orientation parameter after tentatively refining；
4th step defends on piece extraction laser facula region in high score remote sensing image；
5th step has the high score remote sensing image of overlapping to defend piece laser light macular area and carries out dense Stereo Matching, generate DSM；
6th step calculates the System level gray correlation of each facular area DSM elevations according to time offset and laser propagation speed, according to DSM
Elevation system is poor, refines and extracts the characteristic point on DSM as vertical control point；
7th step, according to the three-dimensional coordinate point and orientation parameter on facular area DSM, using the geometrical model of image calculate this three
Dimension point corresponding picpointed coordinate on image, and the height value of the three-dimensional point is modified, after image picpointed coordinate and amendment
Height value partner image vertical control point.
The attribute information includes image format, image resolution and coordinate system.
The atmospheric correction uses ATCOR3 atmospheric correction models, just penetrates correction and rational function model, landform is used to correct
Using cosine correction method.
Transmitting and reception waveform to laser carry out smooth and denoising, waveform feature parameter are extracted, according to laser
Defeated time interval calculates laser one-way transmission initial distance value.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention to any simple modification, equivalent variations made by above example, the protection of the present invention is each fallen within
Within the scope of.
Claims (4)
1. a kind of remote sensing image defends piece vertical control point extraction method and data processing method, it is characterised in that including as follows
Step：
The first step, acquisition survey area's high score remote sensing image, which defends piece and defends piece to high score remote sensing image, to be analyzed, its attribute letter is counted
Breath is stored in tables of data；
Second step is defended piece to high score remote sensing image and is pre-processed, including atmospheric correction, just penetrates correction and topographical correction；
Third walks, and defending piece to high score remote sensing image carries out block adjustment, obtains the orientation parameter after tentatively refining；
4th step defends on piece extraction laser facula region in high score remote sensing image；
5th step has the high score remote sensing image of overlapping to defend piece laser light macular area and carries out dense Stereo Matching, generate DSM；
6th step calculates the System level gray correlation of each facular area DSM elevations according to time offset and laser propagation speed, according to DSM
Elevation system is poor, refines and extracts the characteristic point on DSM as vertical control point；
7th step, according to the three-dimensional coordinate point and orientation parameter on facular area DSM, using the geometrical model of image calculate this three
Dimension point corresponding picpointed coordinate on image, and the height value of the three-dimensional point is modified, after image picpointed coordinate and amendment
Height value partner image vertical control point.
2. a kind of remote sensing image as described in claim 1 defends piece vertical control point extraction method and data processing method,
It is characterized in that：The attribute information includes image format, image resolution and coordinate system.
3. a kind of remote sensing image as described in claim 1 defends piece vertical control point extraction method and data processing method,
It is characterized in that：The atmospheric correction uses ATCOR3 atmospheric correction models, just penetrates correction and rational function model, landform is used to entangle
Just use cosine correction method.
4. a kind of remote sensing image as described in claim 1 defends piece vertical control point extraction method and data processing method,
It is characterized in that：Transmitting and reception waveform to laser carry out smooth and denoising, waveform feature parameter are extracted, according to laser
Transmission Time Interval calculates laser one-way transmission initial distance value.
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| CN110631555A (en) * | 2019-08-27 | 2019-12-31 | 桂林理工大学 | Historical image ortho-rectification method based on adjustment of second-order polynomial control-point-free area network |
| CN110659369A (en) * | 2019-03-22 | 2020-01-07 | 西安电子科技大学 | On-orbit high-precision lightweight global image control point database construction method and system |
| CN112765095A (en) * | 2020-12-24 | 2021-05-07 | 山东省国土测绘院 | Method and system for filing image data of stereo mapping satellite |
| CN114549648A (en) * | 2022-04-25 | 2022-05-27 | 环球数科集团有限公司 | RPC model positioning system based on high-resolution remote sensing satellite stereoscopic image |
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| CN114549648A (en) * | 2022-04-25 | 2022-05-27 | 环球数科集团有限公司 | RPC model positioning system based on high-resolution remote sensing satellite stereoscopic image |
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Application publication date: 20180928 |