CN103245331A - Large-scale aerial survey indoor and outdoor integrated system and control method - Google Patents

Abstract

A large-scale aerial survey and internal and external integrated system, including a field image control measurement subsystem, a field surveying and mapping subsystem, and an office acquisition and editing quality inspection subsystem; the field image control measurement subsystem is used for digital image control point measurement; The field surveying and mapping subsystem is used for digital terrain surveying and mapping; the office acquisition and editing quality inspection subsystem is used for three-dimensional collection, editing, quality inspection and output of results; the three subsystems are all implemented by programming with the open programming module provided by Microstation, and its software The bottom layer, data storage format, processing algorithm and resource configuration are completely consistent. The beneficial technical effects of the present invention are: realize the digitalization of aerial survey image control measurement, realize the electronization and integration of the whole process from aerial survey image control measurement, field surveying and mapping, internal business editing, quality inspection, etc., and avoid the risk of data exchange quality , while ensuring the accuracy of the topographic map, the operation efficiency is improved, the duplication of labor related to data transfer is avoided, and the operation complexity is reduced.

Description

Integrated system and control method for large-scale aerial survey and field

technical field

The invention relates to an aerial survey digital mapping technology, in particular to a large-scale aerial survey internal and external integration system and a control method.

Background technique

Aerial photogrammetry is one of the most effective means of collecting basic geographic information. With the rapid development of economic construction, the demand for basic geographic information in all walks of life is increasing, and the update speed of basic geographic information data is also getting faster and faster. , the cycle is getting shorter and shorter, and the efficiency requirements are getting higher and higher.

In the existing technology, most of the surveying and mapping technology considers the problem from a single perspective of the internal industry or the field industry, and there is no systematic analysis of the overall process formed by the internal industry and the field industry, especially the external production. means of fundamental change.

Many surveying and mapping units still use the traditional paper-based operation methods in image-controlled surveying and field mapping. In the office, a small pen tip is dipped in paint to clean up and paint, and finally the retouched image is digitally processed to obtain a computer-readable picture. This operation method mainly has the following defects: In the field operation, the content of the image Limited to paper photos with limited size and limited resolution, it will bring considerable difficulty to naked eye recognition, pricking or plotting; not only will the image accuracy be lost during the internal transfer process and digitization process, but also exist at the same time Problems such as difficult data exchange, complicated procedures, and heavy workload, and problems such as management and search of paper photos, and resource allocation among operating groups will bring inconvenience to management and actual production; manual plotting is greatly affected by meteorological factors, and rain It doesn't even work in snowy weather.

In the existing technology, the digitization of aerial survey and image control measurement has not been realized yet, and the digitalization of field survey and mapping is only for small and medium scales, and the aerial survey and survey of large scale has not yet been realized. Some PDAs are used for small-to-medium-scale electronic painting, but PDAs are limited by their own performance, and it is difficult to meet the high-efficiency requirements of external production in today's society. Some companies have launched electronic surveying and mapping systems based on tablet computers, but the application of such electronic surveying and mapping systems is still very limited. The software operating platforms of the industry and the field are not compatible, the storage formats are different from each other, the internal and external operation plans are not shared, and the continuity of internal and field operations is not considered as a whole, which is likely to bring data quality risks; The user-defined function is weak, the system scalability is poor, and the secondary development function is lacking. Considering various factors, some units even discard the field digital equipment after they have been introduced. Therefore, it is an urgent problem to be solved how to realize the connection between the field production means and the interior digital measurement technology.

Contents of the invention

Aiming at the problems in the background technology, the present invention proposes a large-scale aerial survey and field integration system, and the hardware involved includes: a tablet computer for field work (that is, field work) and a tablet computer for indoor work (that is, office work) desktop computer; its improvement is that: the integrated system of large-scale aerial survey and internal and external business includes the field image control and measurement subsystem, the field surveying and mapping subsystem and the internal business acquisition and editing quality inspection subsystem; both the tablet computer and the desktop computer are integrated There are field image control measurement subsystems, field surveying and drawing subsystems, and internal industry acquisition and editing quality inspection subsystems; the field image control measurement subsystem is used for digital image control point measurement in field operations; The drawing subsystem is used for digital terrain surveying and mapping in field operations; the office acquisition and editing quality inspection subsystem is used for three-dimensional acquisition, editing, quality inspection and output of topographic map elements; the field image control measurement subsystem The sub-systems of field surveying and drawing, and the sub-system of editing and quality inspection in the office are all implemented by using the open programming module provided by Microstation. The software bottom layer, data storage format, processing algorithm and resource configuration of the three subsystems are completely consistent.

The system of the present invention maintains the consistency of the system while digitizing the various processes inside and outside the aerial survey. The field image control measurement subsystem belongs to the first image control digital measurement technology in China, and the system is also applicable to large-scale aerial surveys such as 1:2000. Field surveying and mapping fills the gap in the current aerial surveying field surveying and mapping that only has small and medium-scale digital technology. The subsystem is applicable to various types and models of computers, and the system is highly versatile.

Based on the existing mature technology, the hardware equipment in the system of the present invention has also adopted the following optimal scheme: the tablet computer adopts a strong casing package, which is firm and waterproof, resistant to strong light, and the battery can be replaced; the operating system uses Windows XP; The tablet PC monitors the USB interface and requires a specific USB device combined with a password to transmit data.

The present invention also proposes a control method based on the above-mentioned large-scale aerial survey and field integration system, and its solution is: the control method of the image-controlled measurement subsystem includes:

1) Import the survey area image in TIF format from the outside, and quickly load and preprocess the survey area image;

2) According to the main point coordinate file of the image, the points are spread, and then the image control point number is created and the index relationship between the image control point number and the survey area image is established to generate the image control point layout network map;

3) During on-the-spot survey, load the image control point network map, search for the corresponding survey area image according to the index relationship according to the image control point number input by the operator, and load and display the found survey area image in the newly created DGN file, The displayed images of the survey area are arranged according to the actual flight zone and heading relationship of the aircraft during aerial photography;

4) According to the command input by the operator, zoom in, zoom out, rotate and crop the image of the survey area;

5) After the image of the measurement area is adjusted, the operator performs the pricking operation on the touch screen of the tablet computer, and enters the following information: pricking point date, operator name, point description; Write image control point symbols and image control information description notes in the DGN file of the DGN file, complete the drawing surface finishing, and output the high-precision image control point result file in JPG format;

6) Return to step 3) to measure the next image control point;

In the post-processing, use the above-mentioned high-precision image control point result file to carry out spatial three-dimensional encryption, and make the encrypted result into a three-dimensional acquisition model and an orthophoto image for adjustment and mapping;

The control method of the field surveying subsystem includes:

The field surveying and mapping subsystem is preset with a configuration library, which is shared with the office procurement and editing quality inspection subsystem. The configuration library stores the line type library, symbol library, color table, and font required for drawing topographic map elements. Libraries and drawing rules;

a) Import orthophotos for mapping from outside;

b) The operator conducts preliminary recognition of the terrain and landform features on the image indoors, calls the configuration library, and draws the clearly identifiable features on the image;

c) During field survey, according to the command input by the operator, load the orthophoto image for mapping; call the configuration library, plot the undrawn features and place names in step b) on the image, and perform step b) Check and correct the features drawn in the map;

d) After finishing the results, the adjustment and painting results will be formed;

The control method of the internal business editing and editing quality inspection subsystem includes:

There is a configuration library preset in the office procurement and editing quality inspection subsystem, which is shared with the field surveying and mapping subsystem. The configuration library stores the line type library, symbol library, color table, and font required for drawing topographic map elements. Libraries and drawing rules;

A. Load the configuration library;

B. Load the adjustment and mapping results and the three-dimensional acquisition model;

C. Receive the instructions input by the operator, check and use the mapping results on the three-dimensional collection model, collect and edit the ground objects and landforms; form the preliminary topographic map results;

D. Carry out quality inspection on the topographic map results, and output the inspection report; if the inspection report indicates that there are still defects in the topographic map results, return to step C, and make further corrections to the topographic map results; if the topographic map is indicated in the inspection report If there are no defects in the result, the final topographic map result will be output.

Further, the rapid loading preprocessing of the survey area image in step 1) includes: scaling the survey area image according to a variety of different scales, and storing the image data under each scale condition separately; When zooming, the system directly calls the survey area image under the corresponding scale conditions to realize the rapid loading of the survey area image.

The beneficial technical effect of the present invention is: realize the digitization of image control measurement in the field of aerial survey, apply the digitization technology of surveying and mapping in field field of aerial survey to large-scale surveying map, improve the digital operation ability of field work; truly realize the image control from aerial survey The electronicization and integration of the entire process of surveying, field surveying, editing, and quality inspection has more powerful functions than the existing field digital equipment, and integrates the operation processes of the field and the office, making The system between the field and the office is completely consistent, avoiding the risk of data exchange quality. While ensuring the accuracy of the topographic map, the efficiency of the field operation is greatly improved, and a large number of problems related to data transfer and drawing in the existing technology are avoided. Repetition of labor reduces the complexity of operation.

Detailed ways

A large-scale aerial survey and field integration system, the hardware involved includes: a tablet computer for field work and a desktop computer for indoor work; the large-scale aerial survey and field integration system includes a field image control measurement System, field surveying and mapping subsystem, and office editing and editing quality inspection subsystem; tablet computers and desktop computers are integrated with field image control and measurement subsystems, field surveying and mapping subsystems, and office editing and editing quality inspection subsystems; The field image control measurement subsystem is used for digital image control point measurement in field operations; the field surveying and mapping subsystem is used for digital terrain surveying and mapping in field operations; the office acquisition and editing quality inspection subsystem is used for Three-dimensional acquisition, editing, quality inspection and output of topographic map elements; the field image control measurement subsystem, field surveying and mapping subsystem and office acquisition and editing quality inspection subsystem are all programmed using the open programming module provided by Microstation Realization, the software bottom layer, data storage format, processing algorithm and resource configuration of the three subsystems are completely consistent.

Further, the tablet computer is packaged in a strong shell, which is strong and waterproof, resistant to strong light, and the battery can be replaced; the operating system uses Windows XP; the system monitors the USB interface of the tablet computer, and requires a specific USB device combined with a password to transmit data.

A control method based on the aforementioned large-scale aerial survey and field integration system, the solution is: the control method of the image-controlled measurement subsystem includes:

1) Import the survey area image in TIF format from the outside, and quickly load and preprocess the survey area image;

2) According to the main point coordinate file of the image, the points are spread, and then the image control point number is created and the index relationship between the image control point number and the survey area image is established to generate the image control point layout network map;

3) During on-the-spot survey, load the image control point network map, search for the corresponding survey area image according to the index relationship according to the image control point number input by the operator, and load and display the found survey area image in the newly created DGN file, The displayed images of the survey area are arranged according to the actual flight zone and heading relationship of the aircraft during aerial photography;

4) According to the command input by the operator, zoom in, zoom out, rotate and crop the image of the survey area;

5) After the image of the measurement area is adjusted, the operator performs the pricking operation on the touch screen of the tablet computer, and enters the following information: pricking point date, operator name, point description; Write image control point symbols and image control information description notes in the DGN file of the DGN file, complete the drawing surface finishing, and output the high-precision image control point result file in JPG format;

6) Return to step 3) to measure the next image control point;

In the post-processing, use the above-mentioned high-precision image control point result file to carry out spatial three-dimensional encryption, and make the encrypted result into a three-dimensional acquisition model and an orthophoto image for adjustment and mapping;

The control method of the field surveying subsystem includes:

The field surveying and mapping subsystem is preset with a configuration library, which is shared with the office procurement and editing quality inspection subsystem. The configuration library stores the line type library, symbol library, color table, and font required for drawing topographic map elements. Libraries and drawing rules;

a) Import orthophotos for mapping from outside;

b) The operator conducts preliminary recognition of the terrain and landform features on the image indoors, calls the configuration library, and draws the clearly identifiable features on the image;

c) During field survey, according to the command input by the operator, load the orthophoto image for mapping; call the configuration library, plot the undrawn features and place names in step b) on the image, and perform step b) Check and correct the features drawn in the map;

d) After finishing the result, the adjustment and painting result will be formed.

the

The control method of the internal business editing and editing quality inspection subsystem includes:

There is a configuration library preset in the office procurement and editing quality inspection subsystem, which is shared with the field surveying and mapping subsystem. The configuration library stores the line type library, symbol library, color table, and font required for drawing topographic map elements. Libraries and drawing rules;

A. Load the configuration library;

B. Load the adjustment and mapping results and the three-dimensional acquisition model;

C. Receive the instructions input by the operator, check and use the mapping results on the three-dimensional collection model, collect and edit the ground objects and landforms; form the preliminary topographic map results;

D. Carry out quality inspection on the topographic map results, and output the inspection report; if the inspection report indicates that there are still defects in the topographic map results, return to step C, and make further corrections to the topographic map results; if the topographic map is indicated in the inspection report If there are no defects in the result, the final topographic map result will be output.

Further, the rapid loading preprocessing of the survey area image in step 1) includes: scaling the survey area image according to a variety of different scales, and storing the image data under each scale condition separately; When zooming, the system directly calls the survey area image under the corresponding scale conditions to realize the rapid loading of the survey area image.

The general process of surveying and mapping operations is: aerial photography to obtain images, image principal point coordinate projection conversion, image control point layout design, image control point measurement on the spot, and digital image control results; Measure and perform absolute orientation based on field image control results to obtain aerial triangulation results; use existing DEM data to make orthophoto images for surveying and mapping, and conduct field surveying and mapping (obtain digital mapping topographic map K); export aerial triangulation results The three-dimensional model is established on the digital photogrammetry workstation, and the elements are collected in the three-dimensional observation environment. At the same time, the digital mapping results are combined to collect, edit and check (the topographic map result M is obtained).

Among them, the image control point layout design and image control point measurement can be completed by the field image control measurement subsystem in the present invention, and then the topographic map K is completed by the field surveying and drawing subsystem, and then the office The acquisition and editing quality inspection subsystem combines the adjustment and drawing result map on the three-dimensional model to perform element collection, editing and element inspection, and complete the result M.

Claims (4)

1. large scale aerial survey indoor and field integration system, related hardware comprises: be used for the panel computer of field work and be used for the desktop computer of office operation; It is characterized in that:

Described vast scale aerial survey indoor and field integration system comprises that field operation is transferred as detection quantized system, field operation and paints subsystem and the interior industry quality inspection subsystem of gathering and editing; All being integrated with field operation in panel computer and the desktop computer transfers as detection quantized system, field operation and paints subsystem and the interior industry quality inspection subsystem of gathering and editing;

Described field operation is measured as the digitizing photo control point that the detection quantized system is used for field work;

Described field operation accent is painted subsystem and is painted for the digital terrain accent of field work;

Industry is gathered and edited the quality inspection subsystem for solid collection, editor, quality check and achievement output to the topomap key element in described;

Described field operation is transferred as detection quantized system, field operation and the open programming module programming that the quality inspection subsystem all adopts Microstation to provide of gathering and editing of subsystem and interior industry is provided is realized that the bottom most software of three subsystems, data memory format, Processing Algorithm and resource distribution are in full accord.

2. large scale aerial survey indoor and field integration according to claim 1 system, it is characterized in that: described panel computer adopts strong formula shell encapsulation, firm waterproof, anti-high light, battery is replaceable; Operating system is used Windows XP; System carries out the USB interface monitoring to panel computer, needs specific USB device could transmit data in conjunction with password.

3. the control method of large scale aerial survey indoor and field integration as claimed in claim 1 system, it is characterized in that: described control method as the detection quantized system comprises:

1) from the survey district image of outside importing TIF form, loads pre-service fast to surveying district's image;

2) according to the principal point coordinate file, carry out machine plotting, newly-built picture control cloth period and foundation picture are controlled the index relative between cloth period and the survey district image then, and the generation picture is controlled the net figure that layouts;

3) during field exploring, add the image-bearing control net figure that layouts, picture control cloth period according to operator's input, search corresponding survey district image by index relative, and the survey district image that will find loads in newly-built DGN file, shows, actual air strips and course relation when shown each surveyed between district's image and to be taken the photograph by the aircraft boat are arranged;

4) according to the order of operator's input, amplify, dwindle, rotate, cut operation to surveying district's image;

5) after survey district image was adjusted, the operator was at the enterprising assassination point operation of the touch screen of panel computer, and the following information of typing: a thorn point date, operator title, a some explanation; Receive the instruction of operator's input then, in newly-built DGN file, write photo control point symbol and picture control information explanation annotation, finish the drawing ornamenting, the high precision photo control point Outcome Document of output JPG form;

6) return step 3), next photo control point is measured;

In the post-processed, utilize aforesaid high precision photo control point Outcome Document to carry out empty three encryptions, produce three-dimensional collection model and be used for transferring the orthography of painting encrypting achievement;

Described field operation transfers the control method of painting subsystem to comprise:

Field operation is transferred to paint and is preset repository in the subsystem, and this repository and the interior industry quality inspection subsystem of gathering and editing is shared, required line style storehouse, symbolic library, color table, fontlib and drawing convention when storing the topographic mapping key element in the repository;

A) import the orthography of painting for transferring from the outside;

B) operator tentatively identifies the landform on the image, morphologic characteristics indoor, calls repository, will can draw out by the clear atural object of recognizing on the image;

C) during field exploring, according to the order of operator's input, load to transfer to paint and use orthography; Call repository, on image, atural object, the place name of not drawing in the step b) are marked and drawed, and the atural object of having drawn in the step b) is checked and revised;

D) after the achievement ornamenting finishes, form accent and plot fruit;

Described interior control method of already gathering and editing the quality inspection subsystem comprises:

In industry gather and edit and preset repository in the quality inspection subsystem, this repository and field operation transfer that to paint subsystem shared, required line style storehouse, symbolic library, color table, fontlib and drawing convention when storing the topographic mapping key element in the repository;

A, loading repository;

B, loading are transferred and are plotted fruit and three-dimensional collection model;

C, receive the instruction of operator's input, exchange at three-dimensional collection model and plot fruit and verify and utilize, atural object, landforms are gathered and edited; Form preliminary topomap achievement;

D, the topomap achievement is carried out quality check, and the outgoing inspection report; Also there is defective if indicate in the topomap achievement in the audit report, then returns step C, the topomap achievement is done further to revise; There is not defective if indicate in the topomap achievement in the audit report, then exports final topomap achievement.

4. the control method of large scale aerial survey indoor and field integration according to claim 3 system, it is characterized in that: in the step 1) survey district image is loaded pre-service fast and comprise: will survey district's image and carry out convergent-divergent by multiple different proportion chi, the image data under each engineer's scale condition is stored separately; The operator is when carrying out convergent-divergent to survey district image, and the survey district image under the corresponding engineer's scale condition directly calls in system, to realize surveying the quick loading of district's image.