CN108549068A - A kind of 3 d scan data processing method and data processing system - Google Patents
A kind of 3 d scan data processing method and data processing system Download PDFInfo
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Abstract
The present invention relates to a kind of 3 d scan data processing method, which includes the following steps：Measurement error data information obtains, first correction data obtains, measurement error data value obtains, second correction data obtains, correction and etc., when the elevation angle of measuring apparatus is in early warning elevation coverage, measurement data is corrected using any one group of correction data of multigroup second correction data, when the elevation angle of measuring apparatus is not in early warning elevation coverage, measurement data is corrected using the first correction data.Data processing method using the present invention can greatly reduce systematic error and random error, improve the accuracy of data.
Description
Technical field
The present invention relates to a kind of 3 d scan data processing methods.The invention further relates to a kind of 3 d scan data processing systems
System.
Background technology
In 3 D scanning system, the measuring accuracy of distance requires very high, existing distance measuring method, and generally known is to survey
Determine the two-way time of light and calculates the method for the distance away from measure object, i.e. so-called TOF (TimeOfFlight) method.The ranging
Method carries out as follows：Since well-known light velocity c is 3.0 × 108m/s, therefore by measuring its two-way time t1, utilization is below
Formula (1) calculates the distance L away from object.
L=(ct1)/2；
Concrete signal processing method in above-mentioned TOF methods have it is as follows, by start pulse it is (synchronouss with light-emitting component) conduct start letter
Number, (or electric discharge) charge is continued to build up on integrator, terminates pulse (by optical signal) until detecting, by its increase (or
Reduce) amount detection light two-way time.These methods are all the photo detectors to carrying out the tested light reflected away from object of self-test
Detection signal handled and obtain range information.At this point, due to the fluctuating of answer speed of above-mentioned light-emitting component, it is above-mentioned by
Optical element ground characteristic variations etc. of above-mentioned two elements caused by the influences such as the fluctuation of answer speed, environment (mainly temperature),
It will produce error on range information.
Therefore, in order to reduce above-mentioned such error, using the light that will be projected from above-mentioned light-emitting component by above-mentioned ranging pair
The first light path detected by photo detector as object is reflected and the light projected from above-mentioned light-emitting component are detected by above-mentioned photo detector
, different from above-mentioned first light path the second light path, if the length of above-mentioned second light path be it is known and be it is certain, can
The range information calculated based on above-mentioned first light path is corrected on the basis of above-mentioned second light path.But above-mentioned document exist with
Under problem：In order to correct the range information calculated based on above-mentioned first light path, it is important that make the length of above-mentioned second light path
It is always certain.
But there is also a large amount of factors to affect measurement error in 3-D scanning（Systematic error, random error）, temperature
Degree, humidity, distance, the material factors etc. of object to be measured.A kind of scheme is not provided in the prior art to solve these and measure to miss
Difference.
Invention content
In order to solve the above technical problem, the present invention provides a kind of 3 d scan data processing method, the three-dimensional is swept
Data processing method is retouched to include the following steps：
Measurement error data information obtains：Obtain the measurement error data information under current environment, the measurement error data letter
Breath includes being made of multigroup measurement error information, measurement error information include at least the first factor measurement error information, second because
Plain measurement error information；
Measurement error data value obtains：According to the first factor measurement error information, multiple first factor measurement error data are obtained
Value；According to the second factor measurement error information, multiple second factor measurement error data values are obtained；
Second correction data obtains：According to the first factor measurement error data value, the second factor measurement error data value, group again
Synthesize multigroup second correction data；
First correction data obtains：According to current environment, the first correction data is obtained, first correction data is for working as front ring
The correction of measurement data under border is calculated by the measurement error data information under current environment；
Correction：When the elevation angle of measuring apparatus is in early warning elevation coverage, using any one group of multigroup second correction data
Correction data is corrected measurement data, when the elevation angle of measuring apparatus is not in early warning elevation coverage, using the first school
Correction data is corrected measurement data.
The environment is temperature, humidity, distance and the determinand material during 3-D scanning.
The early warning elevation coverage is the 30-70% of the elevation angle maximum value of measuring apparatus, and the elevation angle of the measuring apparatus is to survey
The measurement light that amount equipment is sent out is relatively fixed the angle of plane, and the measuring apparatus is fixed on fixed pan.
The data processing method further includes early warning elevation angle obtaining step：
Measurement error data value obtaining step specifically includes following steps：
By all packets in the first factor measurement error information, it is divided into the M data group with identical incremental data,
1 data is selected in each data group, obtains m the first factor measurement error data value A1-Am；
By all packets in the second factor measurement error information, it is divided into the M data group with identical incremental data,
1 data is selected in each data group, obtains m the second factor measurement error data value B1-Bm；
By the first factor measurement error data value A1-Am, the second multigroup second correction of factor measurement error data value B1-Bm compositions
Data.
A kind of 3 d scan data processing method, the data processing method further include：
It obtains and measures line number evidence：Line number is measured according to including multiple measurement data, the measurement data includes coordinate data and the elevation angle
Data, the multiple measurement data from top to bottom form a line perpendicular to ground, the multiple measurement number in real scene
The difference of maximum elevation and minimum angle of elevation in is not more than 1 degree；
It calculates：The angle for calculating straight line and ground that multiple measurement data are formed is when the angle is more than default angle, then more
Maximum elevation and minimum angle of elevation in a measurement data are early warning elevation coverage.
The invention further relates to a kind of 3 d scan data processing system, the processing system includes：
Measurement error data information acquisition module, the measurement error data information acquisition module is for obtaining under current environment
Measurement error data information, the measurement error data information include being made of multigroup measurement error information, measurement error information
Including at least the first factor measurement error information, the second factor measurement error information；
First correction data acquisition module, the first correction data acquisition module are used to, according to current environment, obtain the first school
Correction data, first correction data is used for the correction of measurement data under current environment, by the measurement error number under current environment
It is believed that breath is calculated；
Measurement error data value acquisition module, the measurement error data value acquisition module are used for according to the first factor measurement error
Information obtains multiple first factor measurement error data values；According to the second factor measurement error information, multiple second factors are obtained
Measurement error data value；
Second correction data acquisition module, the second correction data acquisition module are used for according to the first factor measurement error data
Value, the second factor measurement error data value, are reassembled into multigroup second correction data；
Correction module, when the elevation angle of measuring apparatus is in early warning elevation coverage, using the arbitrary of multigroup second correction data
One group of correction data is corrected measurement data, when the elevation angle of measuring apparatus is not in early warning elevation coverage, using
One correction data is corrected measurement data.
The environment is temperature, humidity, distance and the determinand material during 3-D scanning.
The early warning elevation coverage is the 30-70% of the elevation angle maximum value of measuring apparatus, and the elevation angle of the measuring apparatus is to survey
The measurement light that amount equipment is sent out is relatively fixed the angle of plane, and the measuring apparatus is fixed on fixed pan.
The data processing system further include include measurement error data value acquisition module, the measurement error data value obtains
Modulus block includes the first factor measurement error data value processing module, the second factor measurement error data value processing module and the
Two correction data acquisition modules.
The first factor measurement error data value processing module is used for will be all in the first factor measurement error information
Packet is divided into the M data group with identical incremental data, and 1 data is selected in each data group, obtains m the
One factor measurement error data value A1-Am；
The second factor measurement error data value processing module is used for will be by all numbers in the second factor measurement error information
According to grouping, it is divided into the M data group with identical incremental data, 1 data is selected in each data group, obtains m second
Factor measurement error data value B1-Bm；
The second correction data acquisition module is used to measure the first factor measurement error data value A1-Am, the second factor and miss
Difference data value B1-Bm forms multigroup second correction data.
A kind of 3 d scan data processing system, the data processing system further include：
Obtain measure line data module, measure line number according to include multiple measurement data, the measurement data include coordinate data and
Elevation data, the multiple measurement data from top to bottom form a line perpendicular to ground, the multiple survey in real scene
The difference for measuring maximum elevation and minimum angle of elevation in data is not more than 1 degree；
Computing module calculates the angle of straight line and ground that multiple measurement data are formed, when the angle is more than default angle,
Then the maximum elevation in multiple measurement data and minimum angle of elevation are early warning elevation coverage.
Since in data-gathering process, there is a large amount of uncertain factors, and by these all uncertain factors into
Row pre-processing, and obtaining error can be more and more difficult, and data processing method using the present invention, system can be greatly reduced
Error and random error.Improve the accuracy of data.
The above-mentioned of the application and other features, aspect and advantage is more readily understood with reference to following detailed description.
Description of the drawings
Fig. 1 is a kind of 3 d scan data process flow schematic diagram.
Fig. 2 is the structural model schematic diagram of measuring device.
Fig. 3 is a kind of schematic diagram of 3 d scan data processing system.
Fig. 4 is the schematic diagram of measurement error data value acquisition module.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
All other embodiment that personnel are obtained under the premise of without creative work, shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific term used herein should be in fields of the present invention and has
The ordinary meaning that the personage of general technical ability is understood.Used in present patent application specification and claims " the
One ", " second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different
Component part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one.
As shown in Figure 1,3 d scan data processing method includes the following steps：
First correction data obtains：According to current environment, the first correction data is obtained, the first correction data is used under current environment
The correction of measurement data is calculated by the measurement error data information under current environment；
The measurement error data information of the present invention is passed through different types of error big by classifying measurement error
Amount data are calculated, to obtain error information.Such as Fig. 2, it is installed on holder, the coordinate system of holder and laser radar
The position relationship of coordinate system is as shown in Figure 2：The distance between origin and origin are P, plane S (rotary shaft of fixed platform, level
Face) and plane R (plane where laser radar launch point, rotatable), the size at the elevation angle of laser radar is β, measured point A with
The distance of point S is l, and the angle that laser radar rotates left and right is α.
In practical measurement process, it is recognised that there are following three kinds of errors：Laser radar coordinate system is opposite to be sat with holder
Mark the elevation angle error δ of systemsβ；Point range error δ between laser radar coordinate origin s and holder coordinate origin rsp；Plane
S and plane R is not in the plan range error delta of approximately the same planesy.By relevant relationship, it is known that the number with systematic error
Under model enters：
Local derviation is asked to obtain the systematic error in three directions respectively above-mentioned formula：
By above-mentioned formula it is recognised that δsβ、δsp、δsyIt is unknown, needs to obtain above-mentioned unknown number by certain method,
The error on three directions of coordinate points could accurately be obtained.The present invention solves linear dimensions using least square method
, in the case that equation number is more than unknown quantity number, so that it may which, to be solved using the method, general expression is：
Scan specific determinand material, the temperature and humidity on monitoring scanning device periphery, by the data of identical temperature and humidity
It arranges together, obtains the data under same temperature, same humidity, identical material, surveyed respectively 3 different positions
Amount, wherein p and β are the estimated values in measurement point.Each position pendulous frequency is 5000 times, takes the mean value l of distanceiTo be counted
It calculates.
Wherein,
By above-mentioned it is known that scanning specific determinand material, the temperature and humidity on monitoring scanning device periphery will be identical
The data preparation of temperature and humidity together, obtains the data under same temperature, same humidity, identical material, passes through these numbers
According to the first correction parameter can be calculated, the first correction parameter includes elevation angle error, puts range error and face range error,
It is possible thereby to correct the coordinate of A.
Updating formula is as follows：
。
Measurement error data information obtains：Obtain the measurement error data information under current environment, measurement error data letter
Breath includes being made of multigroup measurement error information, measurement error information include at least the first factor measurement error information, second because
Plain measurement error information；
Systematic error can be effectively solved through the above way, but since there are random errors, due in continuous mode one
What series was formed in relation to the small random fluctuation of factor has mutually compensated error.Its Producing reason is analytic process
In various unstable enchancement factors influence, such as room temperature, relative humidity and air pressure environmental condition unstable, analysis personnel behaviour
The fine difference of work and instrument it is unstable etc..Temperature, humidity, distance and specific determinand material environment are to chance error
Difference influence be also difficult to by early period correct to obtain.So when environment determines, temperature, humidity, distance and specifically wait for
It surveys influence of the object material environment to random error to be difficult to obtain, in addition other factors, such as atmospheric pressure, longitude, latitude, height above sea level
Etc. the influences of factors can not also correct.
The first factor measurement error information, the second factor measurement error information of the present invention is angular errors, range error.
By collecting multiple measurement error data informations under specific environment（δ1, δ2）.Measurement error data value obtains：According to first because
Plain measurement error information obtains multiple first factor measurement error data values；According to the second factor measurement error information, obtain more
A second factor measurement error data value；Second correction data obtains：According to the first factor measurement error data value, the second factor
Measurement error data value is reassembled into multigroup second correction data；
Specifically, environment when such as according to practical measuring, measurement error data information includes 1000 groups of angular errors, apart from accidentally
Difference can select 5 errors from 1000 angular errors, 5 errors be selected from 1000 range errors, due to being random
Selection, the error that can be chosen may with actually have larger difference, but due to every time to data timing, all data
All it is random selection, so as a whole, data will be more nearly really, solves temperature, humidity, distance and specific
Influence of the determinand material environment to random error the problem of and the problem of influence of a large amount of uncertain factors to error.
Correction：When the elevation angle of measuring apparatus is in early warning elevation coverage, using the arbitrary of multigroup second correction data
One group of correction data is corrected measurement data, when the elevation angle of measuring apparatus is not in early warning elevation coverage, using
One correction data is corrected measurement data.
It is found by a large amount of test data, when the elevation angle of measuring apparatus is larger, to whole mistake in terms of random error
Difference influence is very big, and when the elevation angle is smaller, then random error is smaller, so using above-mentioned judgment mechanism, can be very good to be directed to
When the elevation angle is larger, by the way of randomly choosing data, random error is thus greatly reduced.
Environment is temperature, humidity, distance and the determinand material during 3-D scanning.
The early warning elevation angle is the 30-70% of the elevation angle maximum value of measuring apparatus, and the elevation angle of measuring apparatus is what measuring apparatus was sent out
The angle that light is relatively fixed plane is measured, measuring apparatus is fixed on fixed pan.
A kind of 3 d scan data processing method, the data processing method further include：
It obtains and measures line number evidence：Line number is measured according to including multiple measurement data, the measurement data includes coordinate data and the elevation angle
Data, the multiple measurement data from top to bottom form a line perpendicular to ground, the multiple measurement number in real scene
The difference of maximum elevation and minimum angle of elevation in is not more than 1 degree；It calculates：Calculate straight line that multiple measurement data are formed and ground
Angle, when the angle is more than default angle, then the maximum elevation in multiple measurement data and minimum angle of elevation are the early warning elevation angle
Range.Can by default one perpendicular to ground determinand, or formed in 3-D graphic from the later stage and choose multiple data points,
The data point is to be reacquired and surveyed by these data perpendicular to ground, such as multiple data at the corner edge in a house
Measure the elevation data when data.Using linear regression or other modes, the parameter of the straight line of these data formation is obtained,
The straight line and the angle on ground are calculated, to which whether error in judgement is in abnormality.As can be seen that the method for the present invention is not required to
Re-start physical correction, it is only necessary to the correction that error can be realized is recalculated from the data obtained.
Measurement error data value obtaining step specifically includes following steps：
By all packets in the first factor measurement error information, it is divided into the M data group with identical incremental data,
1 data is selected in each data group, obtains m the first factor measurement error data value A1-Am；By the second factor measurement error
All packets in information are divided into the M data group with identical incremental data, and 1 number is selected in each data group
According to obtaining m the second factor measurement error data value B1-Bm；By the first factor measurement error data value A1-Am, the second factor
Measurement error data value B1-Bm forms multigroup second correction data.Group technology is random grouping.It through the above steps, can be with
Improve the randomness of packet.
As shown in figure 3, a kind of 3 d scan data processing system, data processing system include：
Measurement error data information acquisition module, measurement error data information acquisition module are used to obtain the measurement under current environment
Error information information, measurement error data information include being made of multigroup measurement error information, and measurement error information includes at least
First factor measurement error information, the second factor measurement error information；
First correction data acquisition module, the first correction data acquisition module are used to, according to current environment, obtain the first correction number
According to the first correction data is used for the correction of measurement data under current environment, by the measurement error data information meter under current environment
It obtains；
Measurement error data value acquisition module, measurement error data value acquisition module are used to be believed according to the first factor measurement error
Breath obtains multiple first factor measurement error data values；According to the second factor measurement error information, obtains multiple second factors and survey
Measure error data value；
Second correction data acquisition module, the second correction data acquisition module be used for according to the first factor measurement error data value,
Second factor measurement error data value, is reassembled into multigroup second correction data；
Correction module, correction module is used for when the elevation angle of measuring apparatus is in early warning elevation coverage, using multigroup second school
Any one group of correction data of correction data is corrected measurement data, when the elevation angle of measuring apparatus is not at early warning elevation coverage
When interior, measurement data is corrected using the first correction data.
Environment is temperature, humidity, distance and the determinand material during 3-D scanning.
The early warning elevation angle is the 30-70% of the elevation angle maximum value of measuring apparatus, and the elevation angle of measuring apparatus is what measuring apparatus was sent out
The angle that light is relatively fixed plane is measured, measuring apparatus is fixed on fixed pan.
As shown in figure 4, data processing system further includes including measurement error data value acquisition module, measurement error data value
Acquisition module include the first factor measurement error data value processing module, the second factor measurement error data value processing module and
Second correction data acquisition module.
First factor measurement error data value processing module is used for all data in the first factor measurement error information
Grouping, is divided into the M data group with identical incremental data, and 1 data is selected in each data group, obtain m a first because
Plain measurement error data value A1-Am；
Second factor measurement error data value processing module is for will divide all data in the second factor measurement error information
Group is divided into the M data group with identical incremental data, and 1 data is selected in each data group, obtains m the second factors
Measurement error data value B1-Bm；
Second correction data acquisition module is used for the first factor measurement error data value A1-Am, the second factor measurement error number
Multigroup second correction data is formed according to value B1-Bm.Group technology is random grouping.
A kind of 3 d scan data processing system, the data processing system further include：
Obtain measure line data module, measure line number according to include multiple measurement data, the measurement data include coordinate data and
Elevation data, the multiple measurement data from top to bottom form a line perpendicular to ground, the multiple survey in real scene
The difference for measuring maximum elevation and minimum angle of elevation in data is not more than 1 degree；
Computing module calculates the angle of straight line and ground that multiple measurement data are formed, when the angle is more than default angle,
Then the maximum elevation in multiple measurement data and minimum angle of elevation are early warning elevation coverage.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.Every basis
The equivalent changes and modifications that the content of present invention is done are encompassed by the scope of the claims of the present invention.
Claims (10)
1. a kind of 3 d scan data processing method, which is characterized in that the 3 d scan data processing method includes following step
Suddenly：
Measurement error data information obtains：Obtain the measurement error data information under current environment, the measurement error data letter
Breath includes being made of multigroup measurement error information, measurement error information include at least the first factor measurement error information, second because
Plain measurement error information；
Measurement error data value obtains：According to the first factor measurement error information, multiple first factor measurement error data are obtained
Value；According to the second factor measurement error information, multiple second factor measurement error data values are obtained；
Second correction data obtains：According to the first factor measurement error data value, the second factor measurement error data value, group again
Synthesize multigroup second correction data；
First correction data obtains：According to current environment, the first correction data is obtained, first correction data is for working as front ring
The correction of measurement data under border is calculated by the measurement error data information under current environment；
Correction：When the elevation angle of measuring apparatus is in early warning elevation coverage, using any one group of multigroup second correction data
Correction data is corrected measurement data, when the elevation angle of measuring apparatus is not in early warning elevation coverage, using the first school
Correction data is corrected measurement data.
2. a kind of 3 d scan data processing method according to claim 1, which is characterized in that the environment is swept for three-dimensional
Temperature, humidity, distance during retouching and determinand material.
3. a kind of 3 d scan data processing method according to claim 1, which is characterized in that the early warning elevation coverage
The elevation angle for the 30-70% of the elevation angle maximum value of measuring apparatus, the measuring apparatus is that the measurement light that measuring apparatus is sent out is opposite
The angle of fixed pan, the measuring apparatus are fixed on fixed pan.
4. a kind of 3 d scan data processing method according to claim 1, which is characterized in that measurement error data value obtains
Step is taken to specifically include following steps：
By all packets in the first factor measurement error information, it is divided into the M data group with identical incremental data,
1 data is selected in each data group, obtains m the first factor measurement error data value A1-Am；
By all packets in the second factor measurement error information, it is divided into the M data group with identical incremental data,
1 data is selected in each data group, obtains m the second factor measurement error data value B1-Bm；
By the first factor measurement error data value A1-Am, the second multigroup second correction of factor measurement error data value B1-Bm compositions
Data.
5. a kind of 3 d scan data processing method according to claim 4, which is characterized in that the data processing method
Further include：
It obtains and measures line number evidence：Line number is measured according to including multiple measurement data, the measurement data includes coordinate data and the elevation angle
Data, the multiple measurement data from top to bottom form a line perpendicular to ground, the multiple measurement number in real scene
The difference of maximum elevation and minimum angle of elevation in is not more than 1 degree；
It calculates：The angle for calculating straight line and ground that multiple measurement data are formed is when the angle is more than default angle, then more
Maximum elevation and minimum angle of elevation in a measurement data are early warning elevation coverage.
6. a kind of 3 d scan data processing system, which is characterized in that the data processing system includes：
Measurement error data information acquisition module, the measurement error data information acquisition module is for obtaining under current environment
Measurement error data information, the measurement error data information include being made of multigroup measurement error information, measurement error information
Including at least the first factor measurement error information, the second factor measurement error information；
Measurement error data value acquisition module, the measurement error data value acquisition module are used for according to the first factor measurement error
Information obtains multiple first factor measurement error data values；According to the second factor measurement error information, multiple second factors are obtained
Measurement error data value；
Second correction data acquisition module, the second correction data acquisition module are used for according to the first factor measurement error data
Value, the second factor measurement error data value, are reassembled into multigroup second correction data；
First correction data acquisition module, the first correction data acquisition module are used to, according to current environment, obtain the first school
Correction data, first correction data is used for the correction of measurement data under current environment, by the measurement error number under current environment
It is believed that breath is calculated；
Correction module, when the elevation angle of measuring apparatus is in early warning elevation coverage, using the arbitrary of multigroup second correction data
One group of correction data is corrected measurement data, when the elevation angle of measuring apparatus is not in early warning elevation coverage, using
One correction data is corrected measurement data.
7. a kind of 3 d scan data processing system according to claim 6, which is characterized in that the environment is swept for three-dimensional
Temperature, humidity, distance during retouching and determinand material.
8. a kind of 3 d scan data processing system according to claim 6, which is characterized in that the early warning elevation coverage
The elevation angle for the 30-70% of the elevation angle maximum value of measuring apparatus, the measuring apparatus is that the measurement light that measuring apparatus is sent out is opposite
The angle of fixed pan, the measuring apparatus are fixed on fixed pan.
9. a kind of 3 d scan data processing system according to claim 6, which is characterized in that the data processing system
It includes measurement error data value acquisition module to further include, and the measurement error data value acquisition module includes that the first factor measures mistake
Difference data value processing module, the second factor measurement error data value processing module and the second correction data acquisition module.
The first factor measurement error data value processing module is used for all data in the first factor measurement error information
Grouping, is divided into the M data group with identical incremental data, and 1 data is selected in each data group, obtain m a first because
Plain measurement error data value A1-Am；
The second factor measurement error data value processing module is used for will be by all numbers in the second factor measurement error information
According to grouping, it is divided into the M data group with identical incremental data, 1 data is selected in each data group, obtains m second
Factor measurement error data value B1-Bm；
The second correction data acquisition module is used to measure the first factor measurement error data value A1-Am, the second factor and miss
Difference data value B1-Bm forms multigroup second correction data.
10. a kind of 3 d scan data processing system according to claim 6, which is characterized in that, the data processing system
System further includes：
Obtain measure line data module, measure line number according to include multiple measurement data, the measurement data include coordinate data and
Elevation data, the multiple measurement data from top to bottom form a line perpendicular to ground, the multiple survey in real scene
The difference for measuring maximum elevation and minimum angle of elevation in data is not more than 1 degree；
Computing module calculates the angle of straight line and ground that multiple measurement data are formed, when the angle is more than default angle,
Then the maximum elevation in multiple measurement data and minimum angle of elevation are early warning elevation coverage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810504904.6A CN108549068B (en) | 2018-05-24 | 2018-05-24 | Three-dimensional scanning data processing method and data processing system |
Applications Claiming Priority (1)
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| CN201810504904.6A CN108549068B (en) | 2018-05-24 | 2018-05-24 | Three-dimensional scanning data processing method and data processing system |
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| CN108549068A true CN108549068A (en) | 2018-09-18 |
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