mapry LA03 Android App Manual

This is a user manual that describes how to use the hardware device "LA03" that works in conjunction with the Android application mapry.


There is no limit to the continuous operation time for mapry LA03 per measurement, but we recommend a maximum of 30 minutes. *1Measurement refers to the period from the start to the end of one scan.


When storing, do not leave the mobile battery in an environment below 0 degrees.

If the mobile battery is cold, it may not be able to supply the necessary power to the device and may not operate.

table of contents

1. Advance preparation

1.1. Connection (USB memory)

Connect the USB memory to LA03.

1.2. Connection (Type-A)

Insert the USB Type-A cable into the mobile battery and turn on the power switch.

1.3. Connection (Type-C)

After turning on the power switch, insert the USB Type-C cable into the mobile battery.

1.4. Fan ON/OFF

You can control the fan on/off with the toggle switch on the top.

Push up to start the fan, push down to stop the fan.

1.5. Turn on Wi-Fi reception

Please turn on Wi-Fi reception on your smartphone. There is no problem even if you are not connected to other Wi-Fi networks.

2. LA03 operation screen

2.1. Screen display

After logging in, tap the LiDAR button to display the LiDAR operation screen.

2.2. Screen details

2.2.1. Scan preparation

When preparations for scanning are completed, various buttons will be activated and scanning operations will be possible. (It will take about 1 minute to 1 and a half minutes to complete the scan preparation.)
If you are using a GNSS receiver, the number of satellites will be displayed. Also, if the communication status with the GNSS receiver is FIX, an icon will be displayed next to the number of satellites.

2.2.2. Routing and display

2.2.2.1. Direction display

The direction your smartphone is facing is indicated by a red icon in the center of the map.

2.2.2.2. Displaying and scaling the map

① Scale the map screen.

② Switch between map and point cloud viewer.

2.2.2.3. Map layer

It is displayed when the map is set to full screen mode, and the displayed map can be changed.

Initially, Google Maps is displayed, but it is also possible to display Geographical Survey Institute maps and aerial photographs as basic maps.

Maps other than Google Maps can also be downloaded from Menu > Map Cache Management for offline use.

After changing the map layer, load and display the range you want to download, and it will be saved in the cache.

Please download it in an online environment such as an office, and use it in an offline environment such as in a forest.

2.2.2.4. Creating a route from points

When the map is set to full screen mode, button ① will be displayed.

Tap the button ① to display and select a point list.

When you select a line, a route will be created based on the line.

When you select an area, the area will be drawn and you can automatically create a route by tapping within the area. You can also edit automatically created routes.

For areas where tiff files are registered, the tiff files are drawn on the map and are not recognized as areas.

Tap the area to display the route creation screen.

① Tap inside the area to automatically create a route. The tapped point will be set as the starting point.

② Route repetition can be reduced.

③ You can rotate the route to the right.

④ You can increase the number of route repetitions.

⑤ You can rotate the route to the left.

⑥ You can switch between automatic route creation mode and manual route creation mode.

⑦ Finish creating the route.

⑧ Confirm the route.

2.2.2.5. Manual route creation

When the map is set to full screen mode, button ② will be displayed.

Tap the button ② to enter the mode where you can manually create a route.

① Delete the last added stop.

② Finish creating the route.

③ Confirm the route.

④ Add a waypoint.

⑤ Display the route distance.

⑥ Move the center of the screen to your position.

2.2.3. Settings screen


① Close the screen without changing the settings.

② Initialize the settings.

③ Save your changes.

④ Point cloud scan density can be set.
High: 240,000 points/second Moderate: 80,000 points/second Low: 30,000 points/second

⑤ You can change the settings for transferring LA03 camera footage to your smartphone.
We recommend that you turn off camera images as it takes time to prepare.

2.2.4. Scan settings

When you tap the start scan button, you can select between two scan modes and set options.

  • scan mode
    • usually
      • You can create 3D maps while moving.
    • Acquire videos simultaneously
      • Create 3D maps while moving and capture videos at the same time.
  • option
    • file name
      • Changes are optional. Japanese is not available.
    • Planar rectangular coordinate system number
      • Choice is required. Please select a coordinate system number.
    • Save starting point

      • The choice is optional. Select this if you want to save the scan start point and scan route as points.

        Select the switch to display the map. The blue and white round icon is the starting point.

        Tap the map to place the icon at the desired location, and press buttons ① and ② to confirm or cancel.

        ① Cancel button

        • Cancels start position selection.

        ② Confirm button

        • Confirm the starting position.

      *Start point and route points are automatically saved when the main map screen is displayed in an online environment.
      Save destination group name: “LA03 (Backpack LiDAR)”

2.2.5. Start scan

When scanning is displayed in the center of the screen, point cloud acquisition will begin from that point.
If a problem occurs during scanning, an error dialog will be displayed, an announcement will be made saying "A problem has occurred", and scanning will stop automatically.
Please note that this may occur when scanning a close distance of less than 2m or in a place where there are extremely few distinctive objects.


If a problem occurs when starting the scan, the following dialog will appear.

  • If the temperature of the LA03 body exceeds 70℃, you can start scanning by pressing "Yes".
    However, please note that if the temperature exceeds 80℃, the device may suddenly stop.

  • If the capacity of the USB memory exceeds 95%
    Please organize the contents of the USB memory.

2.2.6. Autosave

 

Once scanning starts, scan data (point cloud, video, markers, coordinates, self-position) is automatically saved once per minute.
When ① and ② are displayed, automatic saving is complete.

Additionally, the application may freeze during the scan.
If the screen freezes, turn off the app task, restart the app, and then display the LiDAR screen.
You can continue scanning when you hear the message "Scanning in progress."

2.2.7. Marker automatic placement

A marker is automatically acquired for only one point (starting point).
You can then convert the point cloud to public coordinates by manually placing markers.
In addition, the location information when acquiring markers uses the values ​​from your smartphone or GNSS receiver.
If a GNSS receiver is connected, the GNSS receiver's location information will be used first.

2.2.8. Marker installation

Only one type of marker can be used during scanning.

  • green marker
    • Obtain the location and image of LA03.
      If the GNSS receiver is connected, it will get the coordinates at the same time.

2.2.9. Stop scanning

Tap the stop scan button in the center of the screen.
The following dialog will be displayed, so tap the "OK" button.

2.2.10. USB storage

  1. A message will appear indicating that the data is being saved to the USB memory.
    The time it takes to save varies depending on the number of point clouds scanned.

  1. After the message "Saving to USB has been completed" is displayed, the above dialog will be displayed.
    If the dialog disappears, the scan has completed successfully.

3. Point cloud data display on Android device

3.1. Displaying the result list screen

When you tap the "Result List" button at the bottom of the screen, a list of scanned point cloud data will be displayed as shown below.

3.2. Connecting USB memory

Remove the USB memory from the LiDAR case and connect the Android to the USB memory using a USB TypeC to TypeA conversion adapter.

3.3. Importing point cloud data

  1. Tap the USB memory recognition button.

  1. Allow access privileges to USB memory. Tap OK.

  1. A list of files in the USB will be displayed. Select the files to import to Android and tap the "OK" button.

  1. Please wait for a while as the data will begin to be imported to your Android device.

  1. The list will be updated once the import is complete.

3.4. Displaying point cloud data

Display the results list screen and select the file you want to display.

The "Point cloud display" button will be displayed at the bottom of the center of the screen along with the number of selected files, so tap it.

Tap point cloud display to display point cloud data. You can switch between viewing the selected files using the "Previous" and "Next" buttons.

You can also perform various point cloud measurements from the menu.

4. Other button explanations

*Buttons ⑥, ⑦, ⑪, ⑫, and ⑭ have been abolished since Android version 1.0.57.

① Close the operation screen. You cannot exit the scan while it is in progress.

② You can disconnect the LA03 and the app and safely exit the app.
If you check the shutdown button, the LA03 main unit will be shut down at the same time.
Please follow the instructions and exit the app.

③ Display the settings screen.

④ Display the devices connected to bluetooth.

⑤ If GNSS is connected, a value will be displayed for the number of satellites. Also, if the status is FIX, an icon will be displayed.
Tap the number of satellites column to display the reception status in a list.

⑥ You can switch between map and point cloud viewer.

⑦ The device temperature and USB memory usage rate will be displayed in the thermometer column and USB memory usage rate column at the bottom left of the screen.

⑧ You can check the files in the USB memory.

⑨ Save the data to the USB memory.

⑩ Restart the app.

⑪ You can darken your Android smartphone screen.

⑫ Display the camera. (Use this when the camera is shaky or stopped.)

⑬ Start/stop scanning.

⑭ Display sight and compass.

When you tap the button, the sight and compass will be displayed in that order.

 

⑮ Performs the same operation as ⑦.

5. Point cloud data storage location in USB memory

A "mapry_la03" folder is automatically created in the USB memory, and one folder is created for each scan.

Folder structure

  • coordinate folder: Location information is saved.
  • marker folder: The acquired markers are saved.
  • pose folder: The initial pose of LA03 is saved.
  • video folder: Videos are saved.

6. Software update

When updates are distributed, a message will be displayed at the top of the LiDAR screen.

To install the update program, click buttons ① and ② in order to display the hardware product update screen.

If an update program is available, click the "Download and Install" button that will be displayed.
When the update is complete, the message "mapry LA03 is the latest" will be displayed.

7. FAQ

  1. What should I do if I cannot proceed to remote operation when the screen is displayed?
    If the operation below does not resolve the issue, there is a possibility that the product has malfunctioned, so please contact the number of inquiries listed on the warranty card.
    • operation
      Insert Type-A cable → Power on → Wait for 1 minute → LiDAR operation screen display → Insert Type-C cable
  2. What should I do if I can't see the camera image?
    Tap the ② button in " 4. Other Button Descriptions ", follow the instructions, exit the app, and restart the LiDAR screen.

  3. What should I do if the video remains frozen and is blurry?
    Tap the ⑫ button in " 4. Other button explanations ".

  4. What should I do if I can't connect to the device?
    Close the LiDAR screen, display the map screen, and display a layout where you can turn Bluetooth ON/OFF from the top of the screen.
     
    ① Turn off Bluetooth.
    ②Turn on Bluetooth.

8. How to attach the strap

 

Starting from the right hole, pass the string in a spiral pattern as shown in steps ① to ③.
Then, pass the string through the hole in the bottom row and stretch it towards the back.

Attach the string to the metal fittings as shown in ⑤ to ⑥ on the side where nothing is attached.

Tie up the excess string so it doesn't get in the way, as shown in steps ⑦ to ⑨.

9. How to install LA03

Hang the string diagonally around the left shoulder and right side as shown in the picture.
Installation is complete by adjusting the string so that LA03 is straight.
*The H-shaped attachment that comes with the bag is no longer necessary with the current installation method. If you are unsure about fixing it, please use it as a supplement.