CN110555906A - data processing method for oblique photography three-dimensional live-action modeling process - Google Patents
data processing method for oblique photography three-dimensional live-action modeling process Download PDFInfo
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Abstract
The invention relates to the technical field of computer application, in particular to a data processing method generated in a three-dimensional real-scene modeling process aiming at oblique photography. It comprises the following steps: s1, setting an acquisition area by a user, and then acquiring data; s2, the system automatically allocates corresponding storage space on the data storage module according to the set size of the acquisition area, then matches the data and changes the matched data into the same name; and S3, when the information acquisition is finished, calculating the total data amount, distributing a calculation engine according to the calculated total amount, and then performing three-dimensional modeling calculation by adopting the distributed calculation engine. The data processing method has the advantages of low workload, high working efficiency and high reliability.
Description
Technical Field
The invention relates to the technical field of computer application, in particular to a data processing method generated in a three-dimensional real-scene modeling process aiming at oblique photography.
Background
The oblique photography three-dimensional live-action modeling process relates to a large amount of original data collected by a surveying and mapping unmanned aerial vehicle, an RTK surveying and mapping instrument and the like, the data can be subjected to three-dimensional modeling through special modeling software after being subjected to original processing, storage space distribution is required before the data are processed, engine distribution is required to be carried out according to the size of the data after the data are processed, in the prior art, the operations are carried out manually by a user, so that the workload is high, the working efficiency is low, some work needs to be obtained by means of self experience, the subjectivity is high, and the reliability is low.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the data processing method for the oblique photography three-dimensional real scene modeling process is low in workload, high in working efficiency and high in reliability.
The technical scheme adopted by the invention is as follows: a data processing method generated in the process of three-dimensional real-scene modeling aiming at oblique photography comprises the following steps:
s1, setting an acquisition area by a user, acquiring POS data and ground image data obtained in the set area by the surveying and mapping unmanned aerial vehicle, acquiring RTK data and shot picture data obtained in the set area by the RTK surveying and mapping instrument, transmitting the four data to the system for storage, and sending acquisition completion information to the system after the surveying and mapping unmanned aerial vehicle and the RTK surveying and mapping instrument finish acquisition;
S2, the system first automatically allocates the corresponding storage space on the data storage module according to the size of the set collection area, then dividing the storage space into at least five subspaces, namely a backup area, a POS data storage area, a ground image data storage area, an RTK data storage area and a shot photo data storage space, then backing up the transmitted data in the backup area, then matching is performed through the recording time identified in the POS data and the photographing time identified in the ground image data, the matched POS data and the ground image data are changed into the same name, and the matching is carried out through the recording time marked in the RTK data and the shooting time marked in the shot photo data, the matched names of the RTK data and the data for shooting the photo are changed into the same name, and then the matched four kinds of data are respectively stored in corresponding storage spaces;
and S3, when the system receives the information that the surveying and mapping unmanned aerial vehicle finishes collecting, calculating the total amount of POS data and ground image data, distributing a calculation engine according to the calculated total amount, and then performing three-dimensional modeling calculation by adopting the distributed calculation engine.
preferably, in step S1, the height range needs to be set first, and in step S3, all POS data need to be deleted first, POS data not within the set height range are deleted, and then the ground image data matching the deleted POS data are also deleted at the same time, and then the total amount of remaining POS data and ground image data is calculated.
Preferably, in the step S3, during the three-dimensional modeling calculation, the system will monitor the three-dimensional modeling process, and then display the modeling steps and the percentage progress on the set monitoring computer.
Preferably, in the step S3, during the three-dimensional modeling calculation, the system monitors the state of the calculation engine, and automatically sends an alarm message to a set monitoring computer when an error or interrupt message is detected.
Preferably, when the three-dimensional modeling calculation is completed in step S3, the system automatically assigns the calculation engine to other three-dimensional modeling calculation items.
preferably, the computing engines used in step S3 are each provided with an operation monitoring module for monitoring hardware information of the computing engine, and the information monitored by the operation monitoring module is sent to a set monitoring computer.
preferably, the three-dimensional modeling calculation of step S3 includes two times, which are a first calculation and a second calculation, and the first calculation is started when the system receives the information that the surveying and mapping unmanned aerial vehicle has completed collecting, and when the first calculation is completed and the system receives the information that the RTK surveying and mapping instrument has completed collecting, the first calculation result needs to be matched with the information that the RTK surveying and mapping instrument has completed collecting, and then the second calculation is performed.
preferably, the four data are transmitted to the system in real time through the network for storage in step S1.
Compared with the prior art, the method has the following advantages that: the method comprises the steps of automatically distributing storage space according to a set collection area, automatically backing up and matching collected data for naming, and automatically distributing a calculation engine according to the collected data volume, so that the workload of a user is greatly reduced, the working efficiency can be greatly improved, and the reliability is high.
POS information which is not in the set height range is deleted firstly, so that interference data can be removed, and further modeling accuracy is higher.
The modeling progress is monitored, so that a user can know the modeling progress more intuitively and conveniently.
The engine state is monitored, so that a user can more quickly discover various states of the engine.
after the modeling is finished, the engines are automatically distributed, so that the idle time of the engines can be reduced, and the utilization rate of the engines is improved.
The operation monitoring module is arranged, so that the hardware information of the computing engine can be monitored in real time, and engineering failure caused by insufficient memory, CPU overheating and other reasons is prevented.
By calculating twice and combining the result with the RTK data after the first calculation, the accuracy of the result obtained by modeling is higher.
Data are transmitted to the system in real time, so that the safety of the data can be guaranteed, and the surveying and mapping unmanned aerial vehicle can directly start to carry out three-dimensional modeling calculation after finishing measurement, so that the working efficiency is higher.
Detailed Description
The present invention will be further described below by way of specific embodiments, but the present invention is not limited to the following specific embodiments.
A data processing system generated in the process of modeling for three-dimensional real scenes of oblique photography comprises a data storage module, an engineering management module, an operation monitoring module, a user computer and a firewall, wherein:
the data storage module is mainly used for storing data, can be provided with a server independently for storing data or can be stored on hard disks of all computers in a scattered manner, then unified allocation control is carried out, generally, an independent partition is arranged for one project, and each partition is provided with at least a backup area, a POS data storage area, a ground image data storage area, an RTK data storage area and a storage space for data of shot photos; the collected data of the project are stored in the storage space of the corresponding type; carrying out automatic matching according to the self-carried time information or position information of the original data, and then automatically modifying the name of the matched data;
the engineering management module is a software module without a hardware entity and allocates the size of a storage space according to a set acquisition area; and allocating an engine according to the deleted data quantity, namely allocating how many computers or computers with the same performance are allocated for the three-dimensional modeling calculation; monitoring a modeling progress and an engine working state in a modeling process;
the operation monitoring module is an operation environment monitoring module carried by the computer in the prior art, and mainly used for monitoring the temperature of a CPU (central processing unit), the memory of the computer, the hard disk of the computer and the power-on state of the computer;
The user computer can be used as an engine, can be used as a monitoring computer independently, and can be used by combining the engine and the monitoring computer;
The firewall mainly comprises a firewall, wherein original data are transmitted through an external network, so that the acquired original data can be transmitted only by logging in when the firewall needs to be set;
A data processing method for the oblique photography three-dimensional real scene modeling process,
S1, firstly obtaining a target area, then dividing the target area into a plurality of acquisition areas, obtaining a storage space required by data acquired by each acquisition area according to the size of the divided acquisition areas (for example, when the acquisition area is 2km 2, the original data is 130GB, the process operation generates 300GB data volume, and the storage space required to be allocated needs to be larger than 300G.), then dividing the corresponding storage space on a data storage module, generating a project total folder and a plurality of acquisition area subfolders in the project total folder, wherein each acquisition area subfolder at least comprises a backup folder, a POS data folder, a ground image data folder, an RTK data folder and a photo data folder;
S2, the user carries the unmanned aerial vehicle, RTK surveying instrument and shooting equipment to set collection information of collection area, then the user sets the unmanned aerial vehicle to fly according to the collection area and collect data, and the user carries the RTK surveying instrument and shooting equipment to collect data in the collection area, wherein the unmanned aerial vehicle mainly shoots aerial image (also called ground image data) and POS information of the shot aerial photo, the POS information comprises height and longitude and latitude information, the traditional surveying instruments such as RTK measure high-precision control point position in the survey area and spot position shooting photo corresponding to the control point position shot by the shooting equipment, the data collected by the unmanned aerial vehicle, RTK surveying instrument and shooting equipment can be stored in the memory of the user, then all data in the collection area are collected completely, the user uploads the collected data to the data storage module of the system at one time through the login system, or each device can log in the system, so that the acquired data can be transmitted back to the system in real time in the acquisition process;
S3, after the data is transmitted back to the data storage module, backup is needed to be carried out firstly, namely all data lines are stored in a backup area, after backup is finished, the data transmitted back in a period of time can be matched firstly, POS data and ground image data can be matched according to the time attributes of the POS data and the ground image data, namely the POS data and the ground image data have acquisition time, and the acquisition time of the POS data to be matched and the acquisition time of the ground image data are generally the same or very close, so that matching is convenient, and after matching is finished, the names of the two matched data are required to be the same (for example, yj _1-1_1_0001, yj represents the first spelling of the location of an item, 1-1 represents flight area-frame number, 1 represents a lens, and 0001 represents a photo sequence number), RTK data and photo shooting data are matched mainly by means of time attributes or position attributes, because the RTK data and the shot photo data are both provided with self-contained acquisition time data and acquisition location data, matching can be carried out according to the time data, for example, data within a certain time range are matched together, or matching can be carried out according to location information, for example, data within a certain range from the acquisition location are matched together, and after matching is good, the matched data names are required to be changed into the same names (for example, the RTK acquires the names yj001 and yj001-1 of the same point twice, so that the shot photo names yj001 and yj001-1 within the same range are obtained, wherein yj represents the first spelling of the item where the location is located, and 001-1 are serial numbers), and after the matching and the renaming are finished, the data are stored into the corresponding subfolders;
s4, if the data is transmitted at one time, after all the data are matched and renamed, calculating the total amount of POS data and ground image data collected by the collection area, and then distributing the engines according to the total amount of data, namely distributing the number of distributed user computers or the performance of the distributed user computers to perform the first calculation; if the data is transmitted in real time, acquiring finishing information transmitted by the surveying and mapping unmanned aerial vehicle needs to be received, then POS data and ground image data total amount acquired by the acquisition area are calculated, then engines are distributed according to the data total amount, namely, the number and performance of distributed user computers are distributed to carry out first calculation, then the distributed engines and context capture software are adopted to carry out first modeling calculation (mainly carrying out aerial triangulation, calculating flight attitude and photo position, namely, external orientation elements, multiple engines carry out a task process until the progress bar reaches 50%, then one engine is selected to carry out 50% of operation, and the rest engines are idle); after the calculation is finished, the engine can be marked as an idle engine and is allocated to other calculations for use; and the number of engines allocated is also related to the input information in step S1;
s5, if the data is transmitted once, after the first calculation, the RTK data and the shot photo data can be directly matched with the data after the first calculation (firstly, the real photo name matching naming is realized according to the roll name of the RTK, and then under the condition of the same name, the position of the roll point value of the RTK in the image is identified according to the mark information of the real photo), if the data is transmitted in real time, the RTK mapping sent by the user needs to be received after the first calculation is finished, and then data matching is carried out, namely, the RTK data and the data of the shot picture are matched with the data after the first calculation, the matching can be performed manually or automatically by a computer, but the accuracy of the automatic matching by the computer in the prior art is low, so most of the matching is performed manually;
s6, after matching is completed, engine allocation is not needed, because the adopted calculation engines are the calculation engines allocated in the step S4, only the calculation engines with corresponding quantity and performance are selected from the idle engines, then the second calculation (the air triangulation calculation is still executed until the precision of all RTK point positions reaches the standard, namely the 3D precision is less than or equal to 10cm, then the model is partitioned, and the models are partitioned by a plurality of engines respectively under the demolding task),
And S7, when the second calculation is completed, the data processing of the acquisition area is completed.
And because the first calculation and the second calculation are both modeling calculation, the modeling calculation progress percentage and whether errors occur need to be monitored, the monitored condition needs to be displayed on a monitoring computer so that a user can visually see the monitored condition without calling, after the calculation is completed, information can be directly sent to the monitoring computer to inform the user that the current calculation is completed, and when an engine has errors, the information can also be sent to the monitoring computer, and the engine can be redistributed for recalculation.
And because the user computer is used as an engine for calculation, the computer is provided with a plurality of running monitoring modules, such as CPU temperature monitoring, computer memory monitoring, computer hard disk monitoring, computer power-on state monitoring and the like, the system can collect the monitoring data and then visually display the monitoring data on the monitoring computer, and when the monitored data is not in a set threshold range, alarm information is sent to the monitoring computer.
the whole three-dimensional modeling process is a technical scheme disclosed in the prior art, so that the whole three-dimensional modeling process is not developed in detail in the application, and the application is not to protect the whole three-dimensional modeling process, but to process data before modeling and monitor the modeling process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A data processing method generated in the process of three-dimensional live-action modeling for oblique photography is characterized by comprising the following steps:
S1, setting an acquisition area by a user, acquiring POS data and ground image data obtained in the set area by the surveying and mapping unmanned aerial vehicle, acquiring RTK data and shot picture data obtained in the set area by the RTK surveying and mapping instrument, transmitting the four data to the system for storage, and sending acquisition completion information to the system after the surveying and mapping unmanned aerial vehicle and the RTK surveying and mapping instrument finish acquisition;
S2, the system first automatically allocates the corresponding storage space on the data storage module according to the size of the set collection area, then dividing the storage space into at least five subspaces, namely a backup area, a POS data storage area, a ground image data storage area, an RTK data storage area and a shot photo data storage space, then backing up the transmitted data in the backup area, then matching is performed through the recording time identified in the POS data and the photographing time identified in the ground image data, the matched POS data and the ground image data are changed into the same name, and the matching is carried out through the recording time marked in the RTK data and the shooting time marked in the shot photo data, the matched names of the RTK data and the data for shooting the photo are changed into the same name, and then the matched four kinds of data are respectively stored in corresponding storage spaces;
And S3, when the system receives the information that the surveying and mapping unmanned aerial vehicle finishes collecting, calculating the total amount of POS data and ground image data, distributing a calculation engine according to the calculated total amount, and then performing three-dimensional modeling calculation by adopting the distributed calculation engine.
2. A method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: in step S1, the height range needs to be set first, in step S3, all POS data need to be deleted first, POS data not within the set height range are deleted, then the ground image data matching the deleted POS data are also deleted, and then the total amount of the remaining POS data and ground image data is calculated.
3. A method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: in step S3, during the three-dimensional modeling calculation, the system monitors the three-dimensional modeling process, and then displays the modeling steps and the percentage progress on the set monitoring computer.
4. A method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: and S3, when three-dimensional modeling calculation is carried out, the system monitors the state of a calculation engine, and automatically sends alarm information to a set monitoring computer after error or interruption information is monitored.
5. A method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: when the three-dimensional modeling calculation is completed in step S3, the system automatically assigns the calculation engine to other three-dimensional modeling calculation items.
6. A method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: the computing engines used in step S3 are all provided with operation monitoring modules for monitoring hardware information of the computing engines, and the information monitored by the operation monitoring modules is sent to a set monitoring computer.
7. a method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: step S3 is a three-dimensional modeling calculation including two times, which are a first calculation and a second calculation, where the first calculation is started when the system receives information that the surveying and mapping unmanned aerial vehicle has completed collecting, and when the first calculation is completed and the system receives information that the RTK surveying and mapping instrument has completed collecting, the first calculation result needs to be matched with the information that the RTK surveying and mapping instrument has completed collecting, and then the second calculation is performed.
8. A method of processing data generated during a modeling process for a three-dimensional real scene for oblique photography according to claim 1, wherein: in step S1, the four data are transmitted to the system in real time via the network for storage.
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Inventor after: Wu Dun Inventor after: Fei Jianing Inventor after: Gao Guang Inventor after: Zhu Yuanbiao Inventor after: Sun Hua Inventor after: Ying Liangzhong Inventor before: Wu Dun Inventor before: Shu Hao Inventor before: Jiang Man Inventor before: Kong Ao Inventor before: Gan Cui Inventor before: Bian Tingyu Inventor before: Yin Changxia Inventor before: Fei Jianing Inventor before: Gao Guang Inventor before: Sun Hua Inventor before: Zhu Yuanbiao Inventor before: Li Dong Inventor before: Ying Liangzhong Inventor before: Wang Qian |
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Application publication date: 20191210 |