CN105430378A - Image quality evaluation system and method - Google Patents
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Abstract
The invention discloses an image quality evaluation system and an image quality evaluation method, which overcomes the problem in operational running of the existing remote sensing satellite application system, that capacity for evaluating quality of a visible light/infrared remote sensing image product and content related to quality evaluation are insufficient, and provides a visible light/infrared remote sensing image product quality evaluation system, for solving the problem about quality evaluation during automatic production processes of visible light/infrared remote sensing image 0-4 grade products, and meanwhile solving the problem of judging whether the satellite visible light/infrared camera load has calibration requirement during the on-orbit period.
Description
Technical field
The application relates to image processing technique field, particularly relates to a kind of video quality evaluation system and method.
Background technology
Camera space is most important remote sensor in space remote sensor, and the quality of the remote sensing image quality that camera space obtains can reflect the performance of remote sensor, and therefore video quality evaluation is very important, and video quality evaluation can also evaluate the performance of image processing algorithms.The quality evaluation of remote sensing image, generally has subjective evaluation method and method for objectively evaluating two kinds.Subjective evaluation method carries out quality evaluation by people to image, and method for objectively evaluating is by carrying out characteristic parameter extraction to image, sets up the Mathematical Modeling between characteristic parameter and the quality of image, by the Mathematical Modeling objective evaluation quality of image.Method for objectively evaluating kind is more, has and carries out image quality evaluation from statistics angle, have and carry out image quality evaluation etc. from image zooming-out characteristic parameter.
The major function of the visible ray in satellite remote sensing ground application system/infrared remote sensing video quality evaluation system checks 0-4 level visible ray/infrared remote sensing audio and video products, this system is responsible for carrying out quality evaluation to data product at different levels, files evaluation result simultaneously.Because satellite remote sensing date imaging link is complicated, the quality of image is more by each side influencing factor, relate to visible ray/infrared spectral coverage many, be difficult to quantitative evaluation, System Integration Automation degree is lower.
Summary of the invention
Embodiments provide a kind of video quality evaluation system and method, in order to solve the prior art Satellite quality of image more by each side influencing factor, relate to visible ray/infrared spectral coverage many, be difficult to quantitative evaluation, problem that System Integration Automation degree is lower.
Its concrete technical scheme is as follows:
A kind of video quality evaluation system, described system comprises:
Data integrity checking module, for carrying out metadata and auxiliary data reading to visible ray/infrared remote sensing image, and carries out file integrity detection to metadata and auxiliary data, generates data integrity examining report;
Image radiation quality checking module, for carrying out the detection of image radiation quality to full figure or selected zone image, and generates image radiation quality audit report;
Almost T-stable checks computing module, carries out Ground control point matching for or how secondary reference picture secondary to one, adopts measuring tool to carry out splicing the measurement of precision, generates image geometry quality examination report;
Space-time transformation analysis module, radiation quality audit report is generated according to described image radiation quality checking module, carry out radiation quality space-time transformation analysis, generate radiation quality space-time transformation chart, and according to the almost T-stable audit report that described almost T-stable detection module generates, carry out almost T-stable space-time transformation analysis, generate almost T-stable space-time transformation chart;
Wave band registration checking module, for detecting the registration accuracy of how general section of visible ray/infrared remote sensing image wave band part, and carries out the calculating of wave band registration precision, and generates wave band registration accuracy checking report;
Quality inspection result profiling module, for data integrity report, image radiation quality audit report, almost T-stable audit report, almost T-stable space-time transformation chart, wave band registration accuracy checking report being merged, generates Quality evaluation report.
Optionally, described data integrity checking module, specifically for input visible ray/infrared remote sensing audio and video products data carry out metadata and auxiliary data reads, utilize data integrity checking module to carry out filename inspection, Organization of Data and format checking, data integrity inspection, metadata inspection, auxiliary data inspection and error code and frame losing inspection to data and generate audit report according to check result.
Optionally, described image radiation quality checking module, specifically for the image to the full figure inputted or selected zone, carry out, based on the image radiation quality inspection of gray scale or the image radiation quality inspection based on texture, generating based on the image amount of radiation inspection of gray scale or the image radiation quality audit report based on texture.
Optionally, described almost T-stable checks computing module, Ground control point matching is carried out with reference to image specifically for utilizing examine image and a width or several, export the checkpoint of proposition to data, by geometry location, image resolution, the image fabric width of checkpoint to data checks image, adopt survey tool to carry out splicing precision measure, generate image geometry quality examination report.
Optionally, described system also comprises:
Scaling requirements judge module, for comparing according to described comprehensive quality audit report and the pre-configured quality critical condition of system, if described comprehensive quality audit report does not meet described quality critical condition, then generate information, described information is used for prompting and carries out radiation or geometric calibration.
Optionally, described system also comprises:
Human-computer interaction module, for providing graphical human-computer interaction interface, and shows described comprehensive quality audit report according to from the operation of user in described human-computer interaction interface.
A kind of video quality evaluation method, comprising:
Read image to be detected;
Data integrity inspection is carried out to described image, generates data integrity check result;
The inspection of image radiation quality is carried out to described image, generates image radiation quality check result;
According to described image with reference to image, carry out geometric distortion precision and geometry splicing precision checks, and obtain Ground control point matching check result;
Judge that check result is the need of filing;
If desired, then described data integrity check result, described image radiation quality check result, described Ground control point matching check result are filed, generate video quality evaluation report, and process ends;
If do not need filing, then direct process ends.
Optionally, data integrity inspection is carried out to described image, comprising:
0 grade of image is read in described image;
Organization of Data and format checking are carried out, data integrity inspection, metadata inspection, auxiliary data inspection to described 0 grade of image, and generates described data integrity check result.
Optionally, the inspection of image radiation quality is carried out to described image, generates image radiation quality check result, comprising:
0 grade to 1 grade image is read in described image;
Carry out checking based on the image radiation quality of gray scale to described 0 grade to 1 grade image or based on the image radiation quality inspection of texture, generate based on gray scale or based on the image radiation quality check result of texture.
Optionally, according to described image with reference to image, carry out geometric distortion precision and geometry splicing precision checks, and obtain Ground control point matching check result, be specially:
Carry out Ground control point matching by connection control point storehouse, geometric positioning accuracy, geometric distortion precision and geometry splicing precision is checked, generates Ground control point matching check result.
Optionally, described data integrity check result, described image radiation quality check result, described Ground control point matching check result are being filed, after generating video quality evaluation report, described method also comprises:
According to quality evaluation report and quality critical condition, judge that present satellites visible ray/infrared payload is the need of calibrating;
If desired, then again calibrate.
The invention provides a kind of video quality evaluation system, this system comprises: data integrity checking module, image radiation quality checking module, almost T-stable check computing module, space-time transformation analysis module, wave band registration checking module, quality results profiling module, data integrity checking module, for carrying out metadata and auxiliary data reading to visible ray/infrared remote sensing image, and file integrity detection is carried out to metadata and auxiliary data, generate data integrity examining report; Image radiation quality checking module, for carrying out the detection of image radiation quality to full figure or selected zone image, and generates image radiation quality audit report; Almost T-stable checks computing module, carries out Ground control point matching for or how secondary reference picture secondary to one, adopts measuring tool to carry out splicing the measurement of precision, generates image geometry quality examination report; Space-time transformation analysis module, radiation quality audit report is generated according to described image radiation quality checking module, carry out radiation quality space-time transformation analysis, generate radiation quality space-time transformation chart, and according to the almost T-stable audit report that described almost T-stable detection module generates, carry out almost T-stable space-time transformation analysis, generate almost T-stable space-time transformation chart; Wave band registration checking module, for detecting the registration accuracy of how general section of visible ray/infrared remote sensing image wave band part, and carries out the calculating of wave band registration precision, and generates wave band registration accuracy checking report; Quality inspection result profiling module, for data integrity report, image radiation quality audit report, almost T-stable audit report, almost T-stable space-time transformation chart, wave band registration accuracy checking report being merged, generates Quality evaluation report.Data integrity checking module in system can be embedded in visible ray/infrared remote sensing image automated production flow process, avoids defective image to add follow-up high-level data processing link.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of video quality evaluation system in the embodiment of the present invention;
Fig. 2 is the flow chart of a kind of video quality evaluation method in the embodiment of the present invention;
Fig. 3 is the data integrity information check method flow diagram of image data in the embodiment of the present invention;
Fig. 4 is the method flow diagram that in the embodiment of the present invention, image radiation quality checks;
Fig. 5 is the method flow diagram that in the embodiment of the present invention, Ground control point matching checks.
Embodiment
More by each side influencing factor in order to solve the prior art Satellite quality of image, relate to visible ray/infrared spectral coverage many, be difficult to quantitative evaluation, the problem that System Integration Automation degree is lower, a kind of video quality evaluation system is provided in the embodiment of the present invention, this system comprises: data integrity checking module, image radiation quality checking module, almost T-stable checks computing module, space-time transformation analysis module, wave band registration checking module, quality results profiling module, data integrity checking module, for carrying out metadata and auxiliary data reading to visible ray/infrared remote sensing image, and file integrity detection is carried out to metadata and auxiliary data, generate data integrity examining report, image radiation quality checking module, for carrying out the detection of image radiation quality to full figure or selected zone image, and generates image radiation quality audit report, almost T-stable checks computing module, carries out Ground control point matching for or how secondary reference picture secondary to one, adopts measuring tool to carry out splicing the measurement of precision, generates image geometry quality examination report, space-time transformation analysis module, radiation quality audit report is generated according to described image radiation quality checking module, carry out radiation quality space-time transformation analysis, generate radiation quality space-time transformation chart, and according to the almost T-stable audit report that described almost T-stable detection module generates, carry out almost T-stable space-time transformation analysis, generate almost T-stable space-time transformation chart, wave band registration checking module, for detecting the registration accuracy of how general section of visible ray/infrared remote sensing image wave band part, and carries out the calculating of wave band registration precision, and generates wave band registration accuracy checking report, quality inspection result profiling module, for data integrity report, image radiation quality audit report, almost T-stable audit report, almost T-stable space-time transformation chart, wave band registration accuracy checking report being merged, generates Quality evaluation report.Data integrity checking module in system can be embedded in visible ray/infrared remote sensing image automated production flow process, avoids defective image to add follow-up high-level data processing link.
Below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, be to be understood that, the explanation of concrete technical characteristic in the embodiment of the present invention and embodiment just to technical solution of the present invention, instead of limit, when not conflicting, the concrete technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
Be illustrated in figure 1 the structural representation of a kind of video quality evaluation system in the embodiment of the present invention, this system comprises:
Data integrity checking module 101, for carrying out metadata and auxiliary data reading to visible ray/infrared remote sensing image, and carries out file integrity detection to metadata and auxiliary data, generates data integrity examining report;
Image radiation quality checking module 102, for carrying out the detection of image radiation quality to full figure or selected zone image, and generates image radiation quality audit report;
Almost T-stable checks computing module 103, carries out Ground control point matching for or how secondary reference picture secondary to one, adopts measuring tool to carry out splicing the measurement of precision, generates image geometry quality examination report;
Space-time transformation analysis module 104, radiation quality audit report is generated according to described image radiation quality checking module, carry out radiation quality space-time transformation analysis, generate radiation quality space-time transformation chart, and according to the almost T-stable audit report that described almost T-stable detection module generates, carry out almost T-stable space-time transformation analysis, generate almost T-stable space-time transformation chart;
Wave band registration checking module 105, for detecting the registration accuracy of how general section of visible ray/infrared remote sensing image wave band part, and carries out the calculating of wave band registration precision, and generates wave band registration accuracy checking report;
Quality inspection result profiling module 106, for data integrity report, image radiation quality audit report, almost T-stable audit report, almost T-stable space-time transformation chart, wave band registration accuracy checking report being merged, generates Quality evaluation report.
Specifically, data integrity checking module 101, check mainly for 0 DBMS and 0-4 level product, to input visible ray/infrared remote sensing audio and video products data carry out metadata and auxiliary data reads, then utilize data integrity checking module to carry out filename inspection to data, Organization of Data and format checking, data integrity checks, metadata checks, auxiliary data checks and error code and frame losing inspection, inspection terminates the report of rear generation integrity detection, this module is mainly placed in automatic flow, partial function is related in man-machine interactively, comprise filename inspection, integrity checking, metadata and auxiliary data inspection.
Image radiation quality checking module 102, check mainly for 1-4 level product, to the full figure of input or the image of selected zone, carry out, based on the image radiation quality inspection of gray scale or the image radiation quality inspection based on texture, generating the image radiation quality audit report based on gray scale or the image radiation quality audit report based on texture.Wherein, gray average, standard deviation, comentropy, signal to noise ratio, definition, radiation steepness, maximum gradation value and minimum gradation value is had to the Index for examination of the image radiation quality inspection based on gray scale; Index for examination based on the image radiation quality inspection of texture comprises angle two pitch, texture entropy, the degree of correlation and contrast.
Almost T-stable checks computing module 103, utilizes examine image and one or more to carry out Ground control point matching with reference to audio and video products, exports the checkpoint of extraction to data.By geometric positioning accuracy, image resolution, the image fabric width of checkpoint to information check image, distort in distortion and diagonal along in rail direction of distorting in rail direction, hang down, use man-machine interaction to carry out splicing regions and search characteristic point, adopt measuring tool to carry out splicing the measurement of precision, generate image geometry quality examination report.
Space-time transformation analysis module 104, checks according to image radiation quality the radiation quality audit report that mould 102 generates, carries out radiation quality space-time transformation analysis, generates radiation quality space-time transformation analysis diagram.According to the almost T-stable audit report that almost T-stable checking module generates, carry out almost T-stable space-time transformation analysis, generate almost T-stable space-time transformation chart.
Wave band registration degree checking module 105, primary responsibility checks the registration accuracy between multispectral section of visible ray/infrared remote sensing image wave band, utilize the image of a wave band as reference image, all the other wave bands are as image to be detected, after having mated, carry out the calculating of wave band registration precision, and generate corresponding wave band registration degree audit report.
Quality inspection result profiling module 106, for the data integrity audit report of 0-4 level audio and video products, image radiation quality audit report, image geometry quality examination report, wave band registration degree audit report are merged, become a comprehensive quality audit report, also can put in automatic flow.
In the above-described embodiment, this video quality evaluation system, for visible ray at different levels/infrared remote sensing image, has formulated different quality evaluation flow processs respectively, can adapt to the quality evaluation mission requirements of the final ortho-rectification data of 0 grade of band data.
Further, in embodiments of the present invention, this system also comprises:
Ground control point matching module, major control point matching module mainly adopts Relative coefficient and entropy matching method, realize mating between image to be checked with reference image, or carry out Ground control point matching by connection control point storehouse, and then serve almost T-stable checking module, geometric positioning accuracy, geometric distortion precision and geometry splicing precision is checked.
Further, in embodiments of the present invention, this system also comprises:
Scaling requirements judge module, according to quality evaluation result, primary responsibility judges that present satellites visible ray/infrared payload is the need of calibrating.Audio and video products quality examination result and the pre-configured quality critical condition of system compare by this scaling requirements judge module, if ineligible, then point out user to need to carry out radiation or geometric calibration.Quality critical condition is kept in audio and video products QA system with the form of configuration file, and user can modify as required.Wherein quality critical condition can the index of satellite when just entering the orbit as standard, audio and video products quality examination result and this standard are compared judgement, if there is notable difference (5%-10%), then need again to calibrate.
Further, in embodiments of the present invention, this comprises:
Human-computer interaction module, primary responsibility provides graphical human-computer interaction interface, can carry out Multi-view display control, amplify, reduce and the operation such as roaming, and provide human assistance audit function, operator intervenes needing the data of man-machine interactively quality inspection, outgoing inspection result.The inspection that can realize has: data integrity inspection, the inspection of image radiation quality, image geometry quality examination, space-time transformation analysis, wave band registration accuracy checking, scaling requirements judge and the filing of quality inspection result.The product examination of 0-4 level all can select check object by operator, selects audit function and checks operator, carry out quality examination operation in the scope checking rule permission.In addition, in image geometry quality inspection processes, allow operator to carry out control point and move and the operation such as editor.
A kind of video quality evaluation system in the corresponding embodiment of the present invention, additionally provide a kind of video quality evaluation method in the embodiment of the present invention, be illustrated in figure 2 the flow chart of a kind of video quality evaluation method in the embodiment of the present invention, the method comprises:
S201, reads image to be detected;
S202, carries out data integrity inspection to described image, generates data integrity check result;
S203, carries out the inspection of image radiation quality to described image, generates image radiation quality check result;
S204, according to described image with reference to image, carry out geometric distortion precision and geometry splicing precision checks, and obtain Ground control point matching check result;
S205, judges that check result is the need of filing;
If desired file, then perform 206; If do not need filing, then perform S207
S206, files described data integrity check result, described image radiation quality check result, described Ground control point matching check result, generates video quality evaluation report;
S207, direct process ends.
Further, in embodiments of the present invention, the method checked the data integrity of image in S202 is as shown in Figure 3:
S301, reads 0 grade of image;
S302, performs data integrity checking;
Organization of Data and format checking are carried out, data integrity inspection, metadata inspection, auxiliary data inspection to described 0 grade of image, and generates described data integrity check result;
S303, whether judged result files;
If so, then S304 is performed; If not, then S305 is performed;
S304, quality examination result is filed;
S305, process ends.
Further, in embodiments of the present invention, in S203 to image radiation quality check method as shown in Figure 4:
S401, reads 0 grade to 1 grade image;
S402, performs data integrity checking;
Organization of Data and format checking are carried out, data integrity inspection, metadata inspection, auxiliary data inspection to described 0 grade to 1 grade image, and generates described data integrity check result;
S403, performs the inspection of image radiation quality;
Carry out checking based on the image radiation quality of gray scale to 0 grade to 1 grade image or based on the image radiation quality inspection of texture, generate based on gray scale or based on the image radiation quality check result of texture;
S404, whether judged result files;
If so, then S405 is performed; If not, then S406 is performed;
S405, quality examination result is filed;
S406, process ends.
Further, in embodiments of the present invention, according to described image with reference to image, carry out geometric distortion precision and geometry splicing precision checks, and the idiographic flow obtaining Ground control point matching check result is as shown in Figure 5:
S501, reads 2 grades/3 grades/4 grades audio and video products to be checked
S502, performs data integrity checking;
S503, performs the inspection of image radiation quality;
S504, Ground control point matching;
Specifically, almost T-stable evaluation is carried out to 2A/3A level product utilization RPC and DEM, almost T-stable evaluation is carried out to 2B/3B/4 level image, obtains Ground control point matching result;
S505, whether testing result files;
If desired file, then perform S506; If do not need filing, then perform S507.
S506, quality examination result is filed;
S507, process ends.
In embodiments of the present invention, by the method that the embodiment of the present invention provides, what overcome that businessization in existing remote sensing satellite ground application system runs carries out the ability of quality evaluation to visible ray/infrared remote sensing audio and video products and relates to the deficiency of content, a kind of visible ray/infrared remote sensing audio and video products QA system is provided, solve the problem of quality evaluation in visible ray/infrared remote sensing image 0-4 level product automation production process, solve the problem judging whether to have scaling requirements during satellite visible/infrared camera load in-orbit simultaneously.
Although described the preferred embodiment of the application, one of ordinary skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.
Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.
Claims (11)
1. a video quality evaluation system, is characterized in that, described system comprises:
Data integrity checking module, for carrying out metadata and auxiliary data reading to visible ray/infrared remote sensing image, and carries out file integrity detection to metadata and auxiliary data, generates data integrity examining report;
Image radiation quality checking module, for carrying out the detection of image radiation quality to full figure or selected zone image, and generates image radiation quality audit report;
Almost T-stable checks computing module, carries out Ground control point matching for or how secondary reference picture secondary to one, adopts measuring tool to carry out splicing the measurement of precision, generates image geometry quality examination report;
Space-time transformation analysis module, radiation quality audit report is generated according to described image radiation quality checking module, carry out radiation quality space-time transformation analysis, generate radiation quality space-time transformation chart, and according to the almost T-stable audit report that described almost T-stable detection module generates, carry out almost T-stable space-time transformation analysis, generate almost T-stable space-time transformation chart;
Wave band registration checking module, for detecting the registration accuracy of how general section of visible ray/infrared remote sensing image wave band part, and carries out the calculating of wave band registration precision, and generates wave band registration accuracy checking report;
Quality inspection result profiling module, for data integrity report, image radiation quality audit report, almost T-stable audit report, almost T-stable space-time transformation chart, wave band registration accuracy checking report being merged, generates Quality evaluation report.
2. the system as claimed in claim 1, it is characterized in that, described data integrity checking module, specifically for input visible ray/infrared remote sensing audio and video products data carry out metadata and auxiliary data reads, utilize data integrity checking module to carry out filename inspection, Organization of Data and format checking, data integrity inspection, metadata inspection, auxiliary data inspection and error code and frame losing inspection to data and generate audit report according to check result.
3. the system as claimed in claim 1, it is characterized in that, described image radiation quality checking module, specifically for the image to the full figure inputted or selected zone, carry out, based on the image radiation quality inspection of gray scale or the image radiation quality inspection based on texture, generating based on the image amount of radiation inspection of gray scale or the image radiation quality audit report based on texture.
4. the system as claimed in claim 1, it is characterized in that, described almost T-stable checks computing module, Ground control point matching is carried out with reference to image specifically for utilizing examine image and a width or several, export the checkpoint of proposition to data, by geometry location, image resolution, the image fabric width of checkpoint to data checks image, adopt survey tool to carry out splicing precision measure, generate image geometry quality examination report.
5. the system as claimed in claim 1, is characterized in that, described system also comprises:
Scaling requirements judge module, for comparing according to described comprehensive quality audit report and the pre-configured quality critical condition of system, if described comprehensive quality audit report does not meet described quality critical condition, then generate information, described information is used for prompting and carries out radiation or geometric calibration.
6. the system as claimed in claim 1, is characterized in that, described system also comprises:
Human-computer interaction module, for providing graphical human-computer interaction interface, and shows described comprehensive quality audit report according to from the operation of user in described human-computer interaction interface.
7. a video quality evaluation method, is characterized in that, comprising:
Read image to be detected;
Data integrity inspection is carried out to described image, generates data integrity check result;
The inspection of image radiation quality is carried out to described image, generates image radiation quality check result;
According to described image with reference to image, carry out geometric distortion precision and geometry splicing precision checks, and obtain Ground control point matching check result;
Judge that check result is the need of filing;
If desired, then described data integrity check result, described image radiation quality check result, described Ground control point matching check result are filed, generate video quality evaluation report, and process ends;
If do not need filing, then direct process ends.
8. method as claimed in claim 7, is characterized in that, carry out data integrity inspection, comprising described image:
0 grade of image is read in described image;
Organization of Data and format checking are carried out, data integrity inspection, metadata inspection, auxiliary data inspection to described 0 grade of image, and generates described data integrity check result.
9. method as claimed in claim 7, is characterized in that, carry out the inspection of image radiation quality to described image, generates image radiation quality check result, comprising:
0 grade to 1 grade image is read in described image;
Carry out checking based on the image radiation quality of gray scale to described 0 grade to 1 grade image or based on the image radiation quality inspection of texture, generate based on gray scale or based on the image radiation quality check result of texture.
10. method as claimed in claim 7, is characterized in that, according to described image with reference to image, carry out geometric distortion precision and geometry splicing precision checks, and obtain Ground control point matching check result, be specially:
Carry out Ground control point matching by connection control point storehouse, geometric positioning accuracy, geometric distortion precision and geometry splicing precision is checked, generates Ground control point matching check result.
11. methods as claimed in claim 7, it is characterized in that, described data integrity check result, described image radiation quality check result, described Ground control point matching check result are being filed, after generating video quality evaluation report, described method also comprises:
According to quality evaluation report and quality critical condition, judge that present satellites visible ray/infrared payload is the need of calibrating;
If desired, then again calibrate.
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| CN106022790A (en) * | 2016-05-09 | 2016-10-12 | 中国科学院遥感与数字地球研究所 | Quantitative remote sensing product authenticity examination system |
| CN106705942A (en) * | 2016-12-02 | 2017-05-24 | 航天星图科技（北京）有限公司 | Method for testing remote-sensing image processing quality |
| CN108090865A (en) * | 2017-12-15 | 2018-05-29 | 武汉大学 | The in-orbit real-time streaming processing method of optical satellite remote sensing image and system |
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