Introduction
This procedure is the case using Mavice3E and PPK logging.
Please use google translation function when you read this article.
Point cloud processing has area and processing density limitations.
・If the device does not have a SIM, automatic transfer is not available.
・If there is no correction information service, it is not possible to install at unknown points.
・If the coordinate values used at the installation location are local coordinates, localization using Rover is required in advance.
Flight
It is possible to merge flight data, but please note the following
From the standpoint of accuracy, it is necessary to ensure that multiple flight paths lap around each other.
If the lap area is not sufficient, point cloud generation may fail and generation may not be possible in some cases.
Lap flight performed Lap flight not performed
Device
The values below are for reference only.
If the maximum processing area is exceeded, a processing error will occur and the data must be processed by dividing the number of flights.
| Level | Density | Maximum processing area | |||
|
Point cloud + ortho + Unnecessary object Removal point cloud |
Point Cloud + Ortho |
Point Cloud ＋ Unnecessary object Removal point cloud |
Point clouds only | ||
| Ultra-high density | 280p/m2 | 5ha | 5ha | 10ha | 10ha |
| High-density | 160p/m2 | 9ha | 9ha | 18ha | 18ha |
| Medium | 100p/m2 | 15ha | 15ha | 30ha | 30ha |
| Standard density | 16p/m2 | 50ha | 50ha | 50ha | 50ha |
Procedure
1. Set up the device
Turn the bolt around and remove the cover to introduce the battery.
Make sure you have locked the battery.
After installation, be sure to put the cover back on again.
1-2. Set up the surveying tripod
Prepare tripod with 5/8 in. screw on the top.
Top of the tripod must be flat.
Fix the screw firmly to the bottom screw of EdgeBox.
Use a levelling device if needed.
set up Device on known point.
1-3. Trun on the Device
To turn-on edge, press and hold the power button on the EdgeBox for about 4 seconds.
Startup in progress: LED flashes green.
Startup complete: LED is solid green.
| ① Power buttonStatus LED | ② Battery indicator | ③ Power button |
| ④ GNSS reception status | ⑤ PPK logging status LED | ⑥ Erro Updata status LED |
1-4. Tablet connection with the device
After the LTE lights up, the tablet's Wi-Fi function is activated and connected to the device.
| ① The serial number of each device. |
1-5. Install Ege2icon to starting the app
For first-time users, you will need to install an Edge2-specific start icon in your ipad tablet.
Please refer here for instructions.
2. Creation of projects to prepare data for processing
An Internet environment is required for the linkage.
If you do not have one, please start from ③.
It need the free strage space more than 50GB if you process the data,you can check remain strage.
178GB(remaining)/198GB(capacity)
| ① Create project：The start depends on the use case. | |
| ② Generate a new project by connecting to SMART CONSTRUCTION Dashboard. | |
| Generate a new project on SMART CONSTRUCTION Dashboard. | |
| Import a project from SMART CONSTRUCTION Dashboard. | |
| ③ Generate a new project without connecting to SMART CONSTRUCTION Dashboard. | |
| Generate a new project in SMART CONSTRUCTION Edge. | |
| ④ Select a project：To select from already created projects. | |
2-1. Set up coordinate type for processing flight data
The selection is depends on the survey coordinates used in the field.
If local coordinates are to be used, they must be imported into the localization device on site prior to use.
| ① Project name | First enter the project name. | |
| ② Coodinate system to Use | ||
| WGS 84 | Known | Local |
|
If the known point is a point that has been calculated using correction information, it is available for surveying in WGS84 format. |
If the coordinate type is world-based, point datas can be transformed via projection system. |
The local data must be used and localization must be conduct in advance. |
| ③ Import Localization File | ||
| ④ | Cancel | Create |
Example of the format above for imprt localization file
| ⇩Order of XYZ:ENZ | Date starts from first raw. (Without any heddaer) ⇩ |
|||||
| Point name | X(E) | Y(N) | Z(Alt.) | Lat. | Lon. | Elipsoidal height |
| A | -44040.093 | 22842.694 | 3.36 | 35.36100055 | 140.0507608 | 38.11 |
| B | -44164.236 | 22697.367 | 3.904 | 35.36059902 | 140.0501823 | 38.715 |
| C | -44071.288 | 22619.448 | 3.906 | 35.36090117 | 140.0458736 | 38.741 |
|
D |
-4392.312 | 22743.991 | 3.548 | 35.36139004 | 140.0503701 | 38.402 |
|
⇧ Data starts from first Column |
⇧ Lat./Lon DD format.(Decimal) | |||||
2-2. Set up local coordinate after import
| ① Height Unit | meters | international feet | US survey feet | |
| ② Lat/Lon | DD | DMS | ||
| ③ Coordinate Order | ENZ | NEZ | Data start row | select ▼ |
| ④ Decimal Point | .(point) | .(comma) | Data start column | select ▼ |
| ⑤ Separator | ;(semicolom) | (tab) | ,(comma) | Space |
| ⑥ ☑Reflect the change here to"Locale seeting" in the setting menu. | ||||
2-3. Comfirmation the horizontal and vertical sift in local coordinate
Check that the differences in the imported files are correct, as they are critical for accuracy, and create the project.
| ⑦ Residuals | |
| Horizontal ☑0.001 | Vertical ☑-0.006 |
| ⑧ Re-select the file | |
| Cancel | Create |
3. How to logging ppk log
Please ppl logging time should be done before starting the flight and continue until the finish the multiple flights.
3-1. Selection the base point
Use known points during device setup.
If the known point is in the localization, it can be selected from the import.
If additional points are needed, they can be registered directly in addition.
| ① PPK Logging | |
| ② Add Base Station points | |
| ③ Import Point Files | |
| You can select the known point from imported data. | Known point |
| ②-①.◎ Enter Base Station point Coordinates (Local Coordinate) | |
3-2. Measuring the pole height
To enter the height at which the satellite is to be received, measure and enter the exact distance from the ground to the line shown in the illustration.
| ① imput the pole height | value | unit ▼ |
| ② Measuring method of the pole height. You can check mesure the height by click. | ||
| ③ Start ppk logging | ||
4. How to set up flight setting
RTK module must be installed with Drone.
Creation filght Project and set up flight Route
| ① Flight Route | ② Create a Route | ③ Area Route for creation a project |
4-1. Set up the flight route
| ① Creation for flght area | ② save button |
4-2. Select the drone type and camera setting
Red text is must for setting.
| ① Select Aircraft Model | M3E Series | ① Select Camera Model | M3E |
| ② Enter the project name() | |||
| ③ Ortho collection | Oblique Collection | ||
| ④ Ortho GSD（1cm/pixel） | Recommendaiton size is 1.00 cm | ||
| ⑤ Altitude Mode | Relative to Takeoff Point(ALT) | ||
4-2. Select the drone type and camera setting
Red text is must for setting.
| ① Route Altitude(Unnecessary adjustment) | Depend on Othro GSD |
| ② Elevation optimization | ON |
| ③ Safe takeoff altitude | automatic |
|
④ Seed Higher speeds may cause the flight path to be rounded and the drone to shake more. |
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④ Caurse angle Ability to change the direction of the flight path. |
|
| ④ Advance Settings （please click after setting） | |
Check Side Overlap Ratio and Frontal Overlao Ratio,Photo Mode
Note the shooting range and camera mode settings.
Red text is must for setting.
| Advance Settings | |
| ① Side overlap ratio（%） | 60 (basic rate)~80 |
| ② Fronral overlap ratio（%） |
80 (basic rate) |
|
|
|
| ③ Photo mode | Distance interval shot |
| ④ Custom camere angle | OFF |
| ⑤ Save button | |
4-3. Select the shutter speed
Note that point cloud data cannot be generated if the shooting speed is incorrect.
Red text is must for setting.
| ① Preflight chekku button | ② Next |
| ③ shutter setting 1/1000 | ④ Upload flight mission |
4-4. Important points to note when flying
Please Keep distance from devices that are acquiring satellites.
5. How to generate the Point cloud data after flight
If device connected to the Internet, you can transfer the point cloud data to the Smart construction Dashboard job site via the cloud.
A separate contract is required to use the Smart construction cloud.
| ① Generate Point Cloud | |||
| ①-① Reservation of the point cloud reneration | Internet connection required | ||
| ② Point Cloud Name | Enter the project name | ||
| ③ Generation Method | Use PPK only | ☑＋GCP | |
| Use RTK flight data | ☑＋GCP | ||
| Use GCP only | |||
| ④ Destination of the generation process | ◎ SMART CONSATRUTION Edge | ||
| ◎ SMART CONSATRUTION Cloud | |||
| ⑤ Send to the cloud | □ Selection job site | Internet connection required | |
| Without a license of SMART CONSTRUCTION Cloud SfM, you cannot use point-cloud generation on the cloud. | |||
| Cancel | Next | ||
5-1. Selection of generate the Point cloud data
Unwanted objects can be removed auto maticaly when processing flight data .
Select the density of your point cloud.
Standard is recommended for use in soil volume calculations
If you prepare check points for compare the pointdata, you can check accurecy.
Ortho data can be generated by selection.
| ① Unnecesary Item Removal | OFF | ON | ||
| ② Point cloud Density |
Standard 16points/㎡ |
Medium 100points/㎡ |
Hight 160points/㎡ |
Ultra Hight 280points/㎡ |
| ③ Generate point cloud for higher-precision accuracy check. | Loading the check points | |||
| ④ Ortho Image and DEM Image creation | OFF | ON | ||
| ⑤ Strat PPK processing | Upper limit of photo number | |||
5-2. Confirmation the outcome of Point Cloud data
You can check the processing results of the generated point cloud data and the accuracy of the data with the range and validation points.
| ① Generate Point cloud / select created point cloud data. | |||
| ② point cloud imformation |
②-① Calculation setting |
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②-② PPK Processing Results |
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| ③ Point Cloud |
③-① adjust the point size for checking the point cloud data. |
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| ④ Vertical accuracy check | |||
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④-① Radius of point cloud Range (cm) |
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| ④-② Vertical accuracy check can be run with only the position of SMART CONSTRUCTION Edge if the check point is not specified. |
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④-③ Validation Results Check point in red letters is out of range of point cloud and not used by vertical accuracy check. |
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5-3. Offset the outcome of point cloud data
By offsetting with respect to a known point, small variations can be adjusted from the result.
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④-④ Average of valid vertical difference for all Check Point: 0.001 Offset (meters): 0.000 |
OFF | ON |
| ④-⑤ Edit the offset value | ||
| ◎ Vertical offset with the average of Vertical Differences | ||
| ◎ Vertical offset by any value | ||
| Enter the offset value. (Enter a negative value to low the height.) | ||
| Reflect the offset value | ||
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