CN1302033A - Space-time positioned field culture information collecting, processing and analysing system and method - Google Patents
Space-time positioned field culture information collecting, processing and analysing system and method Download PDFInfo
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Abstract
The present invention belongs to the field of information collecting technology. Under the support of power inverter, by utilizing notebook computer with certain configuration, digital camera, GPS receiver and manual unit as well as software system developed with geographic data system Titan 3.1 and Visual Basic 6.0 program language, the present invention performs the space-time positioned field culture information collecting, processing and analyzing. The present invention is used widely in geoscience, ecology, agriculture, etc. and uses expedition vehicle as main carrier for the information acquisition and treatment.
Description
The invention belongs to remote sensing, Geographic Information System, global positioning system technology field.
Be that certain fields in ground, agronomy, ecology of research or business objective use point-like and wire field sampling mode to obtain terrestrial object information usually with the macroscopic appearance, and extend to face, thereby grasp the situation and the Changing Pattern thereof of macroscopic appearance by point, line; Though earth observation technology such as remote sensing have been opened up the brand-new route that obtains face of land macroscopic information, need the cooperation competence exertion effect of ground truth information acquisition generally speaking.Although being above-mentioned subject development, field study in the past made indelible contribution, but also have many inconveniences: at first open-air point-like or section sampled data are difficult for carrying out space orientation, accuracy is poor, normally rely on compass to judge direction, contrast by topomap and ground atural object, sampling point or line-transect position are marked on the paper map, simultaneously the terrestrial object information that observes is fallen the method that field record approaches; Secondly record, arrangement, analysis and the preservation of field inspection data bother very much, efficient is not high, observational data is difficult for cooperating with open-air live video and photo, difficulty relatively often when carrying out analysis-by-synthesis with thematic maps, information that remote sensing image reflected, the quality of data of field sampling can't be passed judgment on the spot like this, is difficult to satisfy the requirement to sampling.
Along with remote sensing, the Geographic Information System particularly maturation and the practicability of global positioning system technology, for field ground feature information is obtained, solid material base has been created in the improvement of space orientation and analyzing and processing mode, by the open-air agricultural feelings sampling system that Beijing primitive spatial data technology company and national remote sensing application Engineering Technical Research Centre are developed jointly, declared national patent with the title of " system and method for carrying out field information acquisition, location and handling " with on Dec 17th, 1998.Though opened up the new mode that field ground feature information is obtained, still there are many weak points in this system: at first its function is very limited, " carrying out field information acquisition; location and the system and method for handling " although by name, but the fundamental purpose of developing this system is to plant number to calculate crops planting area by extracting in the line sample district, its basic thought is with the terrestrial object information on the video camera picked-up sampling route, carry out playback indoor then, to obtain required crop-planting scale-up factor, it is a kind of wire section method of sampling in fact, and sampling point sampling in the open air in the geophysical information collecting in occupation of consequence very; Secondly very inconvenience of its linear sampling, owing to be to use video camera to obtain sampling section terrestrial object information on every side, therefore for long sampling route, need to prepare a large amount of video-tapes, when they are converted to view data through built-in image pick-up card, need configuration large-capacity data memory unit, moreover to guarantee that on the investigation car of advancing the camera lens atural object difficulty that aims at the mark constantly is very big, workload is also very big, the notebook computer power supply supply mainly relies on its built-in lithium battery in addition, and the working time can only keep 2-3 hour; It is more loaded down with trivial details once more the field data of gathering to be carried out subsequent treatment, to in computing machine, carry out animation during concrete operations and play the go forward side by side judgement of row crop type variation and the input in sampling time thereof a large amount of view data, the time of shooting is long more, and the aftertreatment time is also long more; Obtain by the ratio of calculating all images frame number on certain class crop number of image frames and the sample line at last that to plant into several precision limited, its requires to investigate when vehicle advances and remains a constant speed, and this is difficult to accomplish when actual operation.
The objective of the invention is to propose a class under the support of power inverter, utilize certain notebook that disposes and digital camera, GPS receiver, manual input unit, by the software systems of developing by Geographic Information System Titan 3.1 controls and Visual Basic 6.0 programming languages, carry out the field ground feature information acquisition of space-time location and the method for analyzing and processing
" the field ground feature information acquisition and the analysis process system of space-time location " its hardware system (Fig. 1) mainly comprises: the portable notebook computer that field ground feature information stores and Treatment Analysis are used (1.), shoot with video-corder the digital camera (2.) or the digital video recorder of field ground feature information, receive the atural object picture data and it is stored in the infrared receiver (3.) of hard disk, GPS (GPS) receiver (4.) of space-time locating information is provided, the power inverter (5.) that adapts to multiple power demands, make things convenient for the manual input unit (6.) of the dynamic linear sampling of field ground feature information, it is characterized in that:
(1) cartographic feature collection:
Digital camera (2.) or the cartographic feature that digital gamma camera obtained, by infrared receiver (3.), be transferred on the hard disk of notebook computer (1.), overcome the atural object live image that general camera or gamma camera absorbs, to wash picture, scanning or carry out image acquisition by follow-up, cause the lower weakness of work efficiency by image pick-up card.
(2) wire information record:
Except that keyboard, mouse, dispose a manual input unit (6.) that has programmable chip.The sampling route data that is sent by GPS receiver (4.) connects and is the sampling route.In the on-line sampling process, the information such as type of ground objects that observe directly can be joined on the sampling route, available generally speaking click type of ground objects knob input, but when road conditions are bad, because vehicle jolts and causes aforesaid operations to be difficult for accomplishing, sometimes even wrong, therefore having programmable chip, the manual input unit (6.) that has the agrotype knob on the dial plate is linked on the notebook computer (1.), can address this problem.
(3) system power supply supply:
Adopt power inverter (5.), the accumulator DC of investigating vehicle is reverse into 220 volts of alternating currents of standard, and then change it into notebook (1.) and the needed DC current of GPS receiver (4.) by corresponding transformer, to satisfy their continual electricity needs.
" the field ground feature information acquisition and the analysis process system of space-time location " software systems (Fig. 2, Fig. 3) is characterized in that:
(1) sampling preparatory function:
Carry out before the field ground feature information acquisition, can background information, reference data, corresponding map and the remote sensing images etc. relevant with investigating the zone be injected in the notebook,, synthesis display is got up to carry out by their organic organizations by the pre-service of data; On this basis, simultaneously according to mission requirements, selected sampling route is laid sampled point, and the linear sampling content is preestablished.
(2) linear sampling function:
Observed result with field study research or staff, be directly connected on the formed sampling route of the latitude and longitude information that sends by the GPS receiver, and with the line style of sampling route or the character of color showing atural object section, such as field ground feature type information etc., can intuitively reflect the atural object situation on the line-transect like this, can reduce sampled data output on the one hand, save data processing time, can improve the linear sampling precision again on the other hand.Improvement the sampling route on to atural object live telecast record a video, then indoor to linear ground object information extract and handle more loaded down with trivial details, the working method that precision is not high.
(3) point-like sampling function:
, be input in the notebook computer the text description of atural object and observation data on the spot, directly set up and get in touch with the sampling point spatial position data of obtaining by the GPS receiver by keyboard; Use image or video recording data that digital camera or digital gamma camera obtained, time during available the shooting is as filename, after being input to notebook computer, corresponding with the time that the GPS of sampling point place receiver obtains, and they are implemented to locus when taking.
(4) analyzing and processing function:
System can to the linear sampling data carry out such as the ratio of various types of ground objects on sampling path length statistics, the sampling section calculate, the ratio, the calmodulin binding domain CaM area data that obtain type of ground objects in each zone with planar vector map stack estimate various type of ground objects areas etc.; By the linear sampling data, can judge the particular content that the remote sensing image feature is reflected in addition, check the quality of various maps, seek out the wrong part of map, the spatial variations situation of monitoring type of ground objects etc.; For the point-like sampled data can carry out space interpolation, with the comparative analysis of image such as remote sensing, set up relevant mathematical model etc.
(5) Presentation Function as a result:
System can be with reference data, sampled data or analysis result data, with mode or individual event such as image, figure, form, curve, literal, picture, video recording, formula or synthetically show, help like this scheme and result's science of carrying out of field ground feature information acquisition are passed judgment on.
To the effect that of the present invention: under the support of power inverter, utilize certain notebook that disposes and digital camera, GPS receiver, manual input unit, by sample accurate each, information acquisition, Treatment Analysis, result represent each software module, carry out the field ground feature information acquisition of space-time location, the method for analyzing and processing, its step is as follows:
(1) input block such as the floppy drive by notebook, CD-ROM drive, network, keyboard, the remote sensing images that sample region is relevant, thematic maps, list data, written historical materials etc. are input on the hard disk of notebook.
(2) use the image enhancement software module, highlight the information relevant with sample content; Use the reference mark to choose and the coordinate conversion software module, under all kinds of remote sensing images, various thematic maps unification to a coordinate system,, multiple source-information is combined into and the informix body of sampling relevant by integrated display module.
(3) on above-mentioned integrated information basis, in conjunction with the requirement of sampling task, use sampling point cloth if line-transect is planned, the default software module of content, design sampling plan, comprise the information type and the method for sampling that lay in the space, the sampling position will be gathered of sampling position; The information category and the method for sampling that will gather on the space laying of sampling circuit, the sampling circuit.If the sample area scope is less, the sampling location requires accurately differential reference station to be set, and uses the differential setting software module to carry out the input of some parameters.
(4) in the information acquisition process in the open air, use dotted line switching software module is carried out the conversion between point sampling and the line sampling; Wherein the power supply supply of notebook and GPS receiver is with power inverter the direct current of investigating vehicle battery to be converted on the basis of 220 volts of alternating currents, uses the transformer of notebook and GPS receiver that alternating current is converted to the direct current of required voltage separately again.
When (5) carrying out point sampling, use digital camera or Digital Video that the field study object is taken a picture or made a video recording, and utilize programming tool, with image file with time of picked-up as filename; To the observational study result of field study object, to use to observe and describe software module, the form with literal is input to notebook by keyboard, and links with the sampling position coordinate that is obtained with the GPS receiver; Use the measurement result of professional instrument to the field study object, the form with form is input to notebook by keyboard, and links with the sampling position coordinate that is obtained with the GPS receiver; Sample to the field study object collects uses the sample number software module, automatic numbering is carried out in the sampling position, and link with the sampling position coordinate that is obtained with the GPS receiver; Simultaneously with number record to the label of sample, deliver after the laboratory carries out analytical test, its result is input to notebook by keyboard.When in investigating the vehicle ' process, carrying out the line sampling, use manual input unit or mouse, to the terrestrial object information that observes, different by type, press corresponding button, and the information of input linked with the sampling route that obtained with the GPS receiver, be presented on the display screen with different line segment colors or different line segment types, so that check the working condition that line is sampled.
(6) use as a result the storing software module can the result of point sampling or line sampling be stored at any time; When default content and actual conditions are variant, can use content additions and deletions software module that the content of presetting is made amendment.
(7) start picture Input Software module, wherein image file is obtained and be stored in to digital camera or Digital Video, via infrared receiver, be transferred on the hard disk of notebook, by picture positioning software module, photo or video recording data are linked with the sampling position coordinate that is obtained with the GPS receiver.
(8) to having the sampling route of field ground feature information, by line-transect statistical software module, various type of ground objects proportions in the length of calculating sampling route, calculating sampling section, in conjunction with the total amount of various certain character of type of ground objects in the statistics calculating sampling district.To the atural object property information that the sampling position obtains, form the space distribution of sample region atural object property information by sample point interpolation software.
(9) the field ground feature information that sampling is obtained to point sampling, line, by the overlay analysis software module, to carry out the space stacked with thematic maps, draws the statistical nature of terrestrial object information in the zone; Use a model and set up software module, set up the model between field ground feature information and remotely-sensed data, the thematic maps variable.
(10) according to the point sampling that obtains, line sampling field ground feature information, use the graphics editing software module, the thematic maps data are carried out inspection, the modification of figure.If the employing differential technique utilizes the difference processing software module that the sample information that obtains is carried out the calibration of locus.
(11) to field ground feature information and corresponding background data through Treatment Analysis, show by picture demonstration, diagrammatic representation, observation form, statistic curve, image shows, formula fitting, literal analysis and comprehensive output software module, check the effect of field ground feature information acquisition, show and utilize field ground feature information to carry out the result that research institute obtains.
Can learn with being widely used in, in the fields such as ecology, agronomy, mainly to investigate vehicle as delivery vehicle, need carry out sterically definedly, adopt point-like or linear sampling mode, the obtaining and handling of field ground feature information.
The drawing of accompanying drawing of the present invention is described as follows:
Fig. 1 is the system hardware structure figure of the present invention's " the field ground feature information acquisition and analysis process system of space-time location ".
(1) notebook computer wherein
(2) digital camera
(3) infrared receiver
(4) GPS receiver
(5) power inverter
(6) manual input unit
Fig. 2 is the system software structure figure of the present invention's " the field ground feature information acquisition and analysis process system of space-time location ".
Fig. 3 is the data flowchart of the present invention's " the field ground feature information acquisition and analysis process system of space-time location ".
Fig. 4 is the interface of the present invention's " the field ground feature information acquisition and analysis process system of space-time location "
Fig. 5 is Changchun area administrative division and traffic route figure (1:10 ten thousand)
Fig. 6 is Dehui City's present landuse map (1:10 ten thousand)
Fig. 7 is that Crop Information open-air sampling point in Dehui City's is laid and the line-transect planning chart
Fig. 8 is the sampling point sampling module figure of the present invention's " the field ground feature information acquisition and analysis process system of space-time location "
Fig. 9 is the line-transect sampling module figure of the present invention's " the field ground feature information acquisition and analysis process system of space-time location "
Figure 10 is the open-air sampling point Information Monitoring of a Dehui City crop analysis chart
Figure 11 is the open-air line-transect Information Monitoring of Dehui City crop figure as a result
Fig. 1 also is a Figure of abstract
Example of the present invention is as follows:
1. system hardware disposes and specification
Notebook: the Chaoyang 6500DMTF of association
Mainboard: LX-FIC6000
Internal memory: 32 megabits
Hard disk: 2.0G bit
Infrared receiver or USB interface: 100 bps of transfer rates
Display: 12.1TFT
The GPS receiver, antenna: by the GPS receiver of the OEM plate of Strong company assembling
Power inverter: the SKN-200W type power inverter that Shanghai three Electrosource, Inc. of section produce
Manual input unit: the matrix keyboard that has single card microcomputer 2. Jilin Province Dehui City crop farming feelings information of Jilin Industry University production becomes the number field acquisition with cultivated area
On September 27th, 1999, utilize the field ground feature information acquisition and the analysis process system (Fig. 1 is the interface of system for this reason) of the space-time location of development, crop farming feelings to Dehui City, Jilin Province become number to carry out field information acquisition with cultivated area, its step and result are as follows:
(1) with area data, Dehui City's agricultural economy statistics of Dehui width of cloth TM remote sensing image data (in August, 1996 reception), Changchun area 1:10 ten thousand administrative divisions and traffic roadmap (Fig. 5), the 1:10 of Dehui City ten thousand land-use maps (Fig. 6) and all kinds of atural objects, is input to notebook computer by network.
(2) above-mentioned map is unified under two mark latitude authalic conical projection coordinate systems, after the enhancing of TM remote sensing image, with the map registration and with county's part excision out-of-bounds.
(3), carried out the laying (Fig. 7) with the sampling position chosen of sampling route according to the sampling result of zoning and the target of field work.
Designed sample content when (4) Fig. 8 is open-air point sampling, by observe, measure, inquiry, with being input to for information about in the notebook computer of collecting; Corn growing way photo among Figure 10 by means of the infrared receiver in the notebook computer, is transferred in the notebook computer hard disk, and is associated with the locus with the digital camera picked-up.
(5) be transformed into (Fig. 9) under the line sampling pattern, the various type of ground objects information of being gathered are seen Figure 11, and from scheming as seen, the chief crop of whole county scope is a corn, secondly is paddy rice, and other crop proportion is very little.
(6) Figure 10 is Dehui City's corn yield spatial distribution map and growing way picture analyzing, from the corn specific yield data of scheming as seen to be gathered, match with the landform and the soil regime of Dehui City, and therefore be reliably rationally.
(7) following table is the result to the line sampling:
| Type | Sample line length (rice) | 99 years sampling dry crop ratios (%) | 99 years estimation dry crop areas (hectare) | 99 years statistics dry crop areas (hectare) | 99 years statistics dry crop ratios (%) |
| Milpa | ??217162 | ????92.1 | ????167095 | ????101568 | ????56 |
| Soybeans | ??2195 | ????1.0 | ????1814 | ????32553 | ????18 |
| Coarse cereals ground | ??16327 | ????6.9 | ????12519 | ????47307 | ????26 |
| Paddy rice ground | ??22706 | ????0 | |||
| The forest land | ??2589 | ????0 | |||
| The meadow | ??2592 | ????0 | |||
| Settlement place | ??76290 | ????0 | |||
| Amount to | ??339862 | ????100 | ????181428 | ????181428 | ????100 |
Can find out from last table, more identical by various dry crop areas and actual specific that the crop-planting of field acquisition becomes number information to calculate, and by reporting the dry crop area data error that gets very big step by step.
Claims (1)
1, under the support of inverter device, utilize certain notebook that disposes and digital camera, GPS receiver, manual input unit, represent each software module by sampling preparation, information acquisition, Treatment Analysis, result, carry out the field ground feature information acquisition of space-time location, the method for analyzing and processing, it is characterized in that adopting the following step:
(1) input block such as the floppy drive by notebook, CD-ROM drive, network, keyboard, the remote sensing images that sample region is relevant, thematic maps, list data, written historical materials etc. are input on the hard disk of notebook;
(2) use the image enhancement software module, highlight the information relevant with sample content; Use the reference mark to choose and the coordinate conversion software module, under all kinds of remote sensing images, various thematic maps unification to a coordinate system,, multiple source-information is combined into and the informix body of sampling relevant by integrated display module;
(3) on above-mentioned integrated information basis, in conjunction with the requirement of sampling task, use sampling point cloth if line-transect is planned, the default software module of content, design sampling plan, comprise the information type and the method for sampling that lay in the space, the sampling position will be gathered of sampling position; The information category and the method for sampling that will gather on the space laying of sampling circuit, the sampling circuit.If the sample area scope is less, the sampling location requires accurately differential reference station to be set, and uses differential setting to carry out the input of some parameters;
(4) in the information acquisition process in the open air, use dotted line switching software module is carried out the conversion between point sampling and the line sampling; Wherein the power supply supply of notebook and GPS receiver is with power inverter the direct current of investigating vehicle battery to be converted on the basis of 220 volts of alternating currents, uses the transformer of notebook and GPS receiver that alternating current is converted to the direct current of required voltage separately again;
When (5) carrying out point sampling, use digital camera or Digital Video that the field study object is taken a picture or made a video recording, and utilize programming tool, with image file with time of picked-up as filename; To the observational study result of field study object, to use to observe and describe software module, the form with literal is input to notebook by keyboard, and links with the sampling position coordinate that is obtained with the GPS receiver; Use the measurement result of professional instrument to the field study object, the form with form is input to notebook by keyboard, and links with the sampling position coordinate that is obtained with the GPS receiver; Sample to the field study object collects uses the sample number software module, automatic numbering is carried out in the sampling position, and link with the sampling position coordinate that is obtained with the GPS receiver; Simultaneously with number record to the label of sample, deliver after the laboratory carries out analytical test, its result is input to notebook by keyboard.When in investigating the vehicle ' process, carrying out the line sampling, use manual input unit or mouse, to observing terrestrial object information, different by type, press corresponding button, and the information of input linked with the sampling route that obtained with the GPS receiver, be presented on the display screen with different line segment colors or different line segment types, so that check the working condition that line is sampled;
(6) use as a result the storing software module can the result of point sampling or line sampling be stored at any time; When default content and actual conditions are variant, can use content additions and deletions software module that the content of presetting is made amendment;
(7) geophysical information collecting finishes or during middle the pause in the open air, can to field acquisition to information carry out analyzing and processing.Start picture Input Software module, wherein image file is obtained and be stored in to digital camera or Digital Video, via infrared receiver, be transferred on the hard disk of notebook, by picture positioning software module, photo or video recording data are linked with the sampling position coordinate that is obtained with the GPS receiver;
(8) to having the sampling route of field ground feature information, by line-transect statistical software module, various type of ground objects proportions in the length of calculating sampling route, calculating sampling section, in conjunction with the total amount of various certain character of type of ground objects in the statistics calculating sampling district.To the atural object property information that the sampling position obtains, form the space distribution of sample region atural object property information by sample point interpolation software;
(9) the field ground feature information that sampling is obtained to point sampling, line, by the overlay analysis software module, to carry out the space stacked with thematic maps, draws the statistical nature of terrestrial object information in the zone; Use a model and set up software module, set up the model between field ground feature information and remotely-sensed data, the thematic maps variable;
(10) according to the point sampling that obtains, line sampling field ground feature information, use the graphics editing software module, the thematic maps data are carried out inspection, the modification of figure.If the employing differential technique utilizes the difference processing software module that the sample information that obtains is carried out the calibration of locus;
(11) to field ground feature information and corresponding background data through Treatment Analysis, show by picture demonstration, diagrammatic representation, observation form, statistic curve, image interpolation, formula fitting, literal analysis and comprehensive output software module, check the effect of field ground feature information acquisition, show and utilize field ground feature information to carry out the result that research institute obtains.
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| CN 99127547 CN1109996C (en) | 1999-12-29 | 1999-12-29 | Space-time positioned field culture information collecting, processing and analysing system and method |
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|---|---|---|---|
| CN 99127547 CN1109996C (en) | 1999-12-29 | 1999-12-29 | Space-time positioned field culture information collecting, processing and analysing system and method |
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| CN1109996C CN1109996C (en) | 2003-05-28 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332176C (en) * | 2005-06-07 | 2007-08-15 | 中国科学院紫金山天文台 | Space-target real-time astronomical positioning method |
| CN100342380C (en) * | 2005-08-31 | 2007-10-10 | 中国科学院东北地理与农业生态研究所 | GPS sample strip ground collection method for growing portion of crop based on ridge-direction parallelism |
| CN100399368C (en) * | 2006-07-06 | 2008-07-02 | 毛建良 | Engineering data information collecting system |
| CN100412507C (en) * | 2004-06-08 | 2008-08-20 | 中国人民大学 | Layered regression remote sensing sampling technique for estimating crops per unit yield and forest unit storage quantity |
| CN101464911B (en) * | 2007-12-17 | 2010-06-16 | 北京农业信息技术研究中心 | Customizable countryside information acquisition system and method thereof |
| CN101137158B (en) * | 2006-09-19 | 2011-03-23 | 中兴通讯股份有限公司 | Method for performing position orientation to wireless communication data |
| CN103208129A (en) * | 2013-04-23 | 2013-07-17 | 董昊程 | Portable editor and edition method for processing camera photo |
| CN106370455A (en) * | 2016-09-29 | 2017-02-01 | 国网吉林省电力有限公司电力科学研究院 | Recorder applicable to in-situ sampling and working method thereof |
| CN114184189A (en) * | 2021-12-07 | 2022-03-15 | 高德软件有限公司 | Method and device for measuring planar surface feature, storage medium and program product |
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1999
- 1999-12-29 CN CN 99127547 patent/CN1109996C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412507C (en) * | 2004-06-08 | 2008-08-20 | 中国人民大学 | Layered regression remote sensing sampling technique for estimating crops per unit yield and forest unit storage quantity |
| CN1332176C (en) * | 2005-06-07 | 2007-08-15 | 中国科学院紫金山天文台 | Space-target real-time astronomical positioning method |
| CN100342380C (en) * | 2005-08-31 | 2007-10-10 | 中国科学院东北地理与农业生态研究所 | GPS sample strip ground collection method for growing portion of crop based on ridge-direction parallelism |
| CN100399368C (en) * | 2006-07-06 | 2008-07-02 | 毛建良 | Engineering data information collecting system |
| CN101137158B (en) * | 2006-09-19 | 2011-03-23 | 中兴通讯股份有限公司 | Method for performing position orientation to wireless communication data |
| CN101464911B (en) * | 2007-12-17 | 2010-06-16 | 北京农业信息技术研究中心 | Customizable countryside information acquisition system and method thereof |
| CN103208129A (en) * | 2013-04-23 | 2013-07-17 | 董昊程 | Portable editor and edition method for processing camera photo |
| CN106370455A (en) * | 2016-09-29 | 2017-02-01 | 国网吉林省电力有限公司电力科学研究院 | Recorder applicable to in-situ sampling and working method thereof |
| CN114184189A (en) * | 2021-12-07 | 2022-03-15 | 高德软件有限公司 | Method and device for measuring planar surface feature, storage medium and program product |
| CN114184189B (en) * | 2021-12-07 | 2024-05-31 | 高德软件有限公司 | Method, device, storage medium and program product for measuring planar ground object element |
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| CN1109996C (en) | 2003-05-28 |
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