CN106482700B - A kind of digitlization House Property Area Surveying measurement method of sketch direct mapping - Google Patents
A kind of digitlization House Property Area Surveying measurement method of sketch direct mapping Download PDFInfo
- Publication number
- CN106482700B CN106482700B CN201610891478.7A CN201610891478A CN106482700B CN 106482700 B CN106482700 B CN 106482700B CN 201610891478 A CN201610891478 A CN 201610891478A CN 106482700 B CN106482700 B CN 106482700B
- Authority
- CN
- China
- Prior art keywords
- sketch
- house property
- angle
- principal direction
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/28—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring areas
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/206—Drawing of charts or graphs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Processing Or Creating Images (AREA)
- Image Analysis (AREA)
Abstract
The invention discloses a kind of digitlization House Property Area Surveying measurement methods of sketch direct mapping, compared with Housing Area Measurements method used at present, have the advantages such as intuitive, efficient, flexible, convenient.The main flow of this method includes: the manual drawing sketch on touch control device, and sketch simplifies automatic mapping, automatically generates dimension chain, automatic reference area.Firstly, geometry of the operator according to practical tested house property, the sketch of manual drawing house property on intelligent terminal.Then, software passes through house property figure that is simplifying create-rule automatically and tallying with the actual situation, this, which simplifies process, mainly has: deburring, DP are simplified, small range is closed automatically, find principal direction, evens up principal direction, figure rotation etc..Finally, automatically generating dimension chain, input field measurement dimension data calculates House Property Area Surveying automatically.The present invention can effectively improve the efficiency of House Property Area Surveying measurement.
Description
Technical field
The present invention relates to a kind of measurement of house area method, in particular to a kind of digitlization measurement of house area method.
Background technique
The measurement work of House Property Area Surveying is housing and land tax fee collecting, town planning and the important evidence of construction, is a skill
Art is strong, required precision is high, concerning the important process of house property owner's vital interests.Therefore, reality of the measuring and calculating personnel in measurement
It not only needs careful careful, meticulous in work, strictly observes country's measuring and calculating and implement standard criterion, and it should be with high quality, height
The work of efficiency is that house property cause makes bigger contribution.
Currently, the common method of Housing Area Measurements has: measuring method on direct measurement method and figure.Geometric figure analytic method and
The characteristics of coordinate resolution method belongs to the direct method of measurement, both methods is exactly using field measurement data as foundation, by appropriate
Calculation method obtain House Property Area Surveying information.When measurand can be considered as the geometric figure of rule or may be partitioned into the several of rule
When what figure, geometric figure analytic method can be used, this method is that floor space is calculated by formula according to measured data.Coordinate method
It is to calculate floor space by the inflection point coordinate on house boundary, inflection point coordinate can survey to obtain, and precision depends on coordinate precision.Directly
The advantages of mensuration is to need a small amount of measuring tool (such as tape measure) that measurement task can be completed, and by cartographical sketching subscript
Dimensioning, it is relatively more intuitive.But disadvantage is also apparent from: being needed manual record and is summarized measurement data, then manually calculates house property
Area, be easy to appear data omission, misregistration in this way and calculate mistake and error etc., operate not simple and direct enough, low efficiency, error
Rate is high, not humanized enough.
Method is measured on figure planimeter measuring method, grid calculating method, three oblique methods, software method of determining and calculating etc., and wherein planimeter is
The instrument that amount on the diagram calculates area is specialized in, feature is that speed is fast, and can guarantee certain precision.After having measured data,
It can be charted by CAD or CASS software, then directly inquire its area.The technological means that both methods uses is relatively advanced,
But there are also shortcomings.First is that not being avoided that manual record and the whole measurement data of remittance；Second is that using both methods
Premise be to have accurately professional house property drawing；Third is that the mode for calculating area determines that it calculates the place needs of area
It is detached from actual measurement scene, such as: planimeter needs smooth desktop, and CAD needs to be loaded with the computer of the software；Fourth is that the two is right
Operator's profession is more demanding, will use planimeter or meeting CAD drawing.
Summary of the invention
Goal of the invention: it is directed to the above-mentioned prior art, proposes a kind of digitlization House Property Area Surveying measurement side of sketch direct mapping
Method realizes the rapid survey of House Property Area Surveying.
A kind of technical solution: digitlization House Property Area Surveying measurement method of sketch direct mapping, comprising the following steps:
A. it is flat to draw house property using stylus or finger on touch intelligent terminal under XOY coordinate system by survey crew
The contour line sketch of face figure；
B. the coordinate point data for obtaining contour line sketch, then removes coordinate point data jagged in sketch；Wherein,
The furcation branch that two intersection line segments any in sketch are formed beyond intersection point is defined as burr；
C. the coordinate point data of sketch is simplified using Douglas-Pu Ke evacuating algorithm, using to any curve
The coordinate points obtained after Duan Jingjian are linked to be the corresponding broken line replacement line of the curved section；
D. judge whether the contour line sketch obtained after step c processing is integrally closed, if closure thens follow the steps f；If
There are notches, and notch length is less than threshold value A, thens follow the steps e；If notch length exceeds threshold value A, a is returned to step；
Wherein, notch length is the European geometric distance value for the point-to-point transmission that distance is nearest in adjacent two lines section；
E. for any notch, the nearest two o'clock of distance in two lines section involved in the notch is connected, is formed
Closed figures；
F. two principal directions of the closed figures are found using two clustering algorithms；
If g. the difference of the angle and right angle of two principal direction is less than or equal to preset threshold, h is thened follow the steps；Otherwise it returns
Execute step a；
H. the difference for calculating two principal direction angles and right angle, the angle that 2 line segments for representing principal direction are formed to it
Two sides rotate an angle, which is the half of the difference at two principal direction angles and right angle；
I. each line segment in the closed figures is evened up into affiliated principal direction, what generation one was made of orthogonal
Housing map；
J. housing map step i obtained carries out rotation process righting；With the lower-left angle point of the housing map
For rotary middle point, using side where the rotary middle point and X-axis angle value as angle is rotated, by the housing map
It is parallel with X-axis or Y-axis that each line segment rotates to each line segment；
K. size marking is carried out by the way of dimension chain to the housing map that step j is obtained, using the form of chained list
Store the point data of horizontal size chain and vertical dimension chain；
L. scene measures the length and width in any rectangle house by measuring tool, and enters data into the chained list and arrive
Corresponding dimension chain；
M. all dimension chains according to the automatically updating data housing map inputted in the step l；
N. the outer profile that housing map is found out using the outer round as a ball method for surveying outer profile, then uses the boundary of polygon
House Property Area Surveying is calculated in the algorithm of coordinate reference area.
Further, the step f includes the following steps:
F1. optional 2 from all line segments for constituting the closed figures, take it in the inclination angle conduct of XOY coordinate system
Initial cluster center；
F2. 2 classes are divided into using the inclination angle of each line segment as classification standard to each line segment for constituting closed figures, and
Using such inclination angle mean value as new cluster centre；
F3. using the inclination angle error quadratic sum of each line segment and cluster centre as criterion function value, according to step f1 and
F2 obtains new and old criterion function value；
F4. 2 clusters of output if the difference of new and old criterion function value is less than or equal to 1, and using its center as principal direction；
F2 is returned to step if new and old criterion function value is greater than 1.
The utility model has the advantages that the 1, present invention has the advantages that the direct method of measurement, measuring tool is simple, and data source is direct, it solves
The defect that the direct method of measurement needs manual sorting measured data and manually calculates；Meanwhile the present invention also has measurement method on figure
Advantage, it is high-efficient, it is low to calculate error rate, and in operation specialized capability requirement, actual measurement environment adapts to etc. has advantage.
2, flexible and convenient, it is applied widely.The present invention may migrate to the terminal devices such as tablet computer, easy to carry, can match
Rangefinder is closed using some simple measuring tools (such as tape measure) can also be cooperated to use, is applicable to various complicated；
3, cost of implementation is low, high reliablity by common handheld intelligent terminal device cooperates common measuring tool, and
Not needing professional operator just can be obtained more accurately House Property Area Surveying information；
4, operating process is intuitive, convenient and efficient, and Freehandhand-drawing house sketch, is obtained by background process on hand-held intelligent terminal
Scale data to the geometric figure in house, input actual measurement house can obtain the area information of house property, while can modify corresponding
Scale data.
Detailed description of the invention
Fig. 1 is software flow pattern of the invention；
Fig. 2 is the flow chart of the searching principal direction of step f.
Specific embodiment
Further explanation is done to the present invention with reference to the accompanying drawing.
As shown in Figure 1, a kind of digitlization House Property Area Surveying measurement method of sketch direct mapping, is suitable for only including rectangle knot
The House Property Area Surveying of structure measures, and survey crew executes the quick House Property Area Surveying measurement method by software platform, completes house property
Area is intuitive, high efficiency, it is convenient, accurately measure.The following steps are included:
A. it is flat to draw house property using stylus or finger on touch intelligent terminal under XOY coordinate system by survey crew
The contour line sketch of face figure.
B. the coordinate point data for obtaining contour line sketch, then removes coordinate point data jagged in sketch.Wherein,
The furcation branch that two intersection line segments any in sketch are formed beyond intersection point is defined as burr；Except the method for deburring is to protect
The significant figure strong point between two intersection point of line segment is stayed, directly forms the coordinate points of bifurcation structure except deletion intersection point.
C. the coordinate point data of sketch is simplified using Douglas-Pu Ke evacuating algorithm (DP algorithm), using pair
The coordinate points that any curved section obtains after simplifying are linked to be the corresponding broken line replacement line of the curved section.I.e. to the figure number of bulk redundancy
Strong point is compressed to extract necessary data point, is connected the line segment to be formed using point after simplifying and is reconstituted the flat of house property
Face figure sketch, i.e., become broken line for the curve in sketch.This step is while to guarantee figure to simplify data coordinates point quantity
Topological structure it is constant, achieve the effect that with broken line instead of curve.
D. judge whether the contour line sketch obtained after step c processing is integrally closed, if closure thens follow the steps f；If
There are notches, and notch length is less than threshold value A, thens follow the steps e；If notch length exceeds threshold value A, a is returned to step；
Wherein, notch length is the European geometric distance value for the point-to-point transmission that distance is nearest in adjacent two lines section；Threshold value A can be set as 5
A pixel.
E. for any notch, the nearest two o'clock of distance in two lines section involved in the notch is connected, is formed
Closed figures.
F. two principal directions of closed figures are found using two clustering algorithms (K-Means, K=2)；Principal direction refers to one group
The main trend of inclination angle distribution density in touch screen coordinate system of line segment, is indicated with the line segment of 2 shared endpoints.Such as Fig. 2 institute
Show, specifically comprises the following steps:
F1. optional 2 from all line segments for constituting the closed figures, take it in the inclination angle conduct of XOY coordinate system
Initial cluster center；
F2. 2 classes are divided into using the inclination angle of each line segment as classification standard to each line segment for constituting closed figures, and
Using such inclination angle mean value as new cluster centre；
F3. using the inclination angle error quadratic sum of each line segment and cluster centre as criterion function value, according to step f1 and
F2 obtains new and old criterion function value；
F4. 2 clusters of output if the difference of new and old criterion function value is less than or equal to 1, and using its center as principal direction；
F2 is returned to step if new and old criterion function value is greater than 1.
If g. the difference of the angle and right angle of two principal direction is less than or equal to preset threshold, h is thened follow the steps；Otherwise it returns
Execute step a；The threshold value can be set as 20 degree.
H. the difference for calculating two principal direction angles and right angle, the angle that 2 line segments for representing principal direction are formed to it
Two sides rotate an angle, which is the half of the difference at two principal direction angles and right angle.
I. each line segment in closed figures is evened up into affiliated principal direction, generates a house property being made of orthogonal
Plan view.Here operation of evening up is not only each line segment to be evened up affiliated principal direction merely, and consider entire
Topological structure relationship, the spatial position of figure and the original area of figure of figure.Here segment data is pre-processed, i.e.,
Define the topological relation that a structural body includes line segment, i.e., have public point with that line segment, midpoint coordinates and 3, inclination angle at
Member's variable.Here this line segment is determined with midpoint coordinates and inclination angle, with topological structure relationship come before determining that the line segment is evened up
The midpoint done adjusts and evens up the intersecting point coordinate with other line segments afterwards.Midpoint Adjustment principle be to endpoint connection relationship and
The midpoint for belonging to several line segments of same principal direction is averaged and the new midpoint as the series line segment.Line segment root after evening up
According to topological structure relationship, the overlapping relation of the line segment Yu other line segments is determined, new figure is determined with this.Special case: having and
Only two lines section shares an endpoint and this two lines section belongs to same principal direction, this two lines section becomes after evening up operation
One line segment.
J. housing map step i obtained carries out rotation process righting；It is rotation with the lower-left angle point of housing map
Turn central point, side where using rotary middle point and X-axis angle value rotate to each line segment of housing map as rotation angle
Each line segment is parallel with X-axis or Y-axis.
K. size marking is carried out by the way of dimension chain to the housing map that step j is obtained, using the form of chained list
Store the point data of horizontal size chain and vertical dimension chain；
L. scene measures the length and width in any rectangle house by measuring tools such as Hand-hold Distance Finder or tape measures, and will
Data are input in the chained list to corresponding dimension chain；
M. all dimension chains according to the automatically updating data housing map inputted in the step l；
N. the outer profile that housing map is found out using the outer round as a ball method for surveying outer profile, then uses the boundary of polygon
House Property Area Surveying is calculated in the algorithm of coordinate reference area.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (2)
1. a kind of digitlization House Property Area Surveying measurement method of sketch direct mapping, which comprises the following steps:
A. survey crew draws housing map under XOY coordinate system using stylus or finger on touch intelligent terminal
Contour line sketch；
B. the coordinate point data for obtaining contour line sketch, then removes coordinate point data jagged in sketch；It wherein, will be careless
The furcation branch that any two intersection line segments are formed beyond intersection point in figure is defined as burr；
C. the coordinate point data of sketch is simplified using Douglas-Pu Ke evacuating algorithm, using to any curved section essence
The coordinate points obtained after letter are linked to be the corresponding broken line replacement line of the curved section；
D. judge whether the contour line sketch obtained after step c processing is integrally closed, if closure thens follow the steps f；If it exists
Notch, and notch length is less than threshold value A, thens follow the steps e；If notch length exceeds threshold value A, a is returned to step；Its
In, notch length is the European geometric distance value for the point-to-point transmission that distance is nearest in adjacent two lines section；
E. for any notch, the nearest two o'clock of distance in two lines section involved in the notch is connected, forms closure
Figure；
F. two principal directions of the closed figures are found using two clustering algorithms；
If g. the difference of the angle and right angle of two principal direction is less than or equal to preset threshold, h is thened follow the steps；Otherwise it returns and executes
Step a；
H. the difference for calculating two principal direction angles and right angle will represent 2 line segments of principal direction to the two of its angle formed
Side rotates an angle, which is the half of the difference at two principal direction angles and right angle；
I. each line segment in the closed figures is evened up into affiliated principal direction, generates a house property being made of orthogonal
Plan view；
J. housing map step i obtained carries out rotation process righting；It is rotation with the lower-left angle point of the housing map
Turn central point, using side where the rotary middle point and X-axis angle value as rotation angle, by each line of the housing map
It is parallel with X-axis or Y-axis that section rotates to each line segment；
K. size marking is carried out by the way of dimension chain to the housing map that step j is obtained, is stored in the form of chained list
The point data of horizontal size chain and vertical dimension chain；
L. scene measures the length and width in any rectangle house by measuring tool, and enters data into the chained list to correspondence
Dimension chain；
M. all dimension chains according to the automatically updating data housing map inputted in the step l；
N. the outer profile that housing map is found out using the outer round as a ball method for surveying outer profile, then uses the boundary coordinate of polygon
House Property Area Surveying is calculated in the algorithm of reference area.
2. the digitlization House Property Area Surveying measurement method of sketch direct mapping according to claim 1, it is characterised in that: described
Step f includes the following steps:
F1. optional 2 from all line segments for constituting the closed figures, take it at the inclination angle of XOY coordinate system as initial
Cluster centre；
F2. to each line segment for constituting closed figures, using the inclination angle of each line segment as classification standard, it is divided into 2 classes, and respectively
Using the inclination angle mean value of 2 classes as new cluster centre；
F3. it using the inclination angle error quadratic sum of each line segment and cluster centre as criterion function value, is obtained according to step f1 and f2
To new and old criterion function value；
F4. 2 clusters of output if the difference of new and old criterion function value is less than or equal to 1, and using its center as principal direction；If new
Old criterion function value is greater than 1 and returns to step f2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891478.7A CN106482700B (en) | 2016-10-12 | 2016-10-12 | A kind of digitlization House Property Area Surveying measurement method of sketch direct mapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891478.7A CN106482700B (en) | 2016-10-12 | 2016-10-12 | A kind of digitlization House Property Area Surveying measurement method of sketch direct mapping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106482700A CN106482700A (en) | 2017-03-08 |
| CN106482700B true CN106482700B (en) | 2019-06-04 |
Family
ID=58270632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610891478.7A Active CN106482700B (en) | 2016-10-12 | 2016-10-12 | A kind of digitlization House Property Area Surveying measurement method of sketch direct mapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106482700B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108664860B (en) * | 2017-04-01 | 2022-02-01 | 中山市琪朗灯饰厂有限公司 | Method and device for identifying room plan |
| JP6989766B2 (en) * | 2017-09-29 | 2022-01-12 | ミツミ電機株式会社 | Radar device and target detection method |
| CN108537855B (en) * | 2018-04-02 | 2022-04-26 | 景德镇陶瓷大学 | Ceramic stained paper pattern generation method and device with consistent sketch |
| CN109086472B (en) * | 2018-06-08 | 2023-06-02 | 东南大学 | Real estate diagram changing parameterization drawing method and device based on size constraint |
| CN109671116A (en) * | 2018-09-26 | 2019-04-23 | 深圳壹账通智能科技有限公司 | House Property Area Surveying calculation method and relevant device based on image recognition |
| CN109506632B (en) * | 2018-11-12 | 2021-03-26 | 浙江省国土勘测规划有限公司 | Real estate plane measurement method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247971A (en) * | 1999-09-27 | 2000-03-22 | 那文绪 | Estimation method of commerical building area |
| CN1407313A (en) * | 2001-09-05 | 2003-04-02 | 蔡南贤 | Automatic room measuring method and apparatus |
| CN1567192A (en) * | 2003-07-03 | 2005-01-19 | 程欣 | Surveying calculation system assembly for floor area of building |
| CN201368730Y (en) * | 2008-12-30 | 2009-12-23 | 聂艳苗 | Land area measuring instrument adopting GPS positioning system |
| CN103017655A (en) * | 2012-11-30 | 2013-04-03 | 刘庆国 | Method and system for extracting floor area of multi-floor building |
| CN103136515A (en) * | 2013-02-06 | 2013-06-05 | 浙江大学 | Creative inflection point identification method based on draft action sequence and system using the same |
| CN103308026A (en) * | 2013-06-28 | 2013-09-18 | 上海斐讯数据通信技术有限公司 | Method for measuring house area by mobile terminal |
| CN105444701A (en) * | 2015-12-04 | 2016-03-30 | 广东欧珀移动通信有限公司 | Region area measuring method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8401222B2 (en) * | 2009-05-22 | 2013-03-19 | Pictometry International Corp. | System and process for roof measurement using aerial imagery |
-
2016
- 2016-10-12 CN CN201610891478.7A patent/CN106482700B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247971A (en) * | 1999-09-27 | 2000-03-22 | 那文绪 | Estimation method of commerical building area |
| CN1407313A (en) * | 2001-09-05 | 2003-04-02 | 蔡南贤 | Automatic room measuring method and apparatus |
| CN1567192A (en) * | 2003-07-03 | 2005-01-19 | 程欣 | Surveying calculation system assembly for floor area of building |
| CN201368730Y (en) * | 2008-12-30 | 2009-12-23 | 聂艳苗 | Land area measuring instrument adopting GPS positioning system |
| CN103017655A (en) * | 2012-11-30 | 2013-04-03 | 刘庆国 | Method and system for extracting floor area of multi-floor building |
| CN103136515A (en) * | 2013-02-06 | 2013-06-05 | 浙江大学 | Creative inflection point identification method based on draft action sequence and system using the same |
| CN103308026A (en) * | 2013-06-28 | 2013-09-18 | 上海斐讯数据通信技术有限公司 | Method for measuring house area by mobile terminal |
| CN105444701A (en) * | 2015-12-04 | 2016-03-30 | 广东欧珀移动通信有限公司 | Region area measuring method and apparatus |
Non-Patent Citations (2)
| Title |
|---|
| EDMI测距房产面积测量精度估算方法的研究;李玉宝等;《现代测绘》;20060331;第29卷(第2期);第36-38页 |
| GPS_PDA在土地变更调查中的应用研究;冯宝红等;《测控技术》;20030831;第22卷(第8期);第23-25页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106482700A (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106482700B (en) | A kind of digitlization House Property Area Surveying measurement method of sketch direct mapping | |
| CN111721308B (en) | Three-dimensional road network map drawing method, device, equipment and medium | |
| CN103759677B (en) | Based on the method for triangle area ratio law amount rock mass discontinuity three-dimensional roughness | |
| US8411107B2 (en) | Adaptive snapping | |
| CN204730814U (en) | A kind of parts passer based on line laser three-dimensional measurement | |
| CN102622479B (en) | Reverse engineering computer-aided design (CAD) modeling method based on three-dimensional sketch | |
| US8072450B2 (en) | System and method for measuring a three-dimensional object | |
| CN108875177B (en) | Method for creating inland waterway dredging graph under single beam measuring point based on BIM model | |
| Widyaningrum et al. | Building outline extraction from ALS point clouds using medial axis transform descriptors | |
| CN102521884A (en) | Three-dimensional roof reconstruction method based on LiDAR data and ortho images | |
| CN105550428A (en) | Bridge security evaluation method based on TLS (three-dimensional laser scanning) technique | |
| CN110375712A (en) | Drift section extracting method, device, equipment and storage medium | |
| CN112818776B (en) | Railway existing line cross section measurement method based on airborne LiDAR point cloud | |
| CN107622530A (en) | A kind of triangulation network cutting method of efficiently robust | |
| CN108332685A (en) | A kind of coding structural light three-dimensional measurement method | |
| CN112033385A (en) | Pier pose measuring method based on mass point cloud data | |
| CN114332291A (en) | Oblique photography model building outer contour rule extraction method | |
| CN105225272A (en) | A kind of tri-dimensional entity modelling method based on the reconstruct of many outline lines triangulation network | |
| CN103795417A (en) | Trajectory data compression method capable of controlling maximum error | |
| CN104700406A (en) | Method and system for extracting plane occurrence texture | |
| Wang et al. | The accuracy of sketched spatial relations: How cognitive errors affect sketch representation | |
| CN116793304A (en) | Point cloud-based virtual measurement method for cross section of single-circle shield subway tunnel | |
| Kennie et al. | Digital terrain modelling | |
| WO2021154273A1 (en) | Generating 3d printing points using an approximate mathematical expression of a rqb curve | |
| CN104700407A (en) | Rock mass crack recognizing method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |