Display
Jakartowns offers various display styles to facilitate data analysis and visualization:
3D Point Clouds displayed in the main window. The style can be selected directly from the toolbar.
Raster Tiles displayed on the 2D map, configurable from the menu located above the map.
Point Clouds
Point clouds can be displayed using several colorization styles, providing different perspectives based on data properties.
Colorization by Intensity
LiDAR is an active sensor that emits a light source (laser) toward an object. When the light hits an object, part of it is absorbed and part is reflected back to the sensor. Intensity represents the amount of light received by the sensor, revealing the optical properties of the objects.
This method distinguishes objects based on their light absorption capacity.
It provides an extremely detailed view of surface characteristics.
An intensity filter can be applied to restrict the display to a specific range.
Colorization by Classification
Points are colored according to their classification, which is performed by an AI algorithm. Each category is represented by a distinct color:
Vegetation: Green
Buildings: Orange
Ground: Blue
Cables: Red
Poles: Beige
Vehicles and other objects: Yellow
Colorization from Images
Each point in the cloud is colored using pixels from a corresponding image, providing a realistic 3D visualization.
Important: This feature is not available for all Jakarto data. If image colorization is unavailable, points will default to intensity mode.
Colorization by Elevation
Points are colored based on their altitude using a cyclic color scale. This method makes it easy to visualize height variations within the environment.
Colorization by Depth
Points are colored based on their distance from the user's position. The color scale is adjustable to better represent relevant distances.
Panoramic Image Overlay
This option displays a panoramic image beneath the point cloud. Users can adjust the transparency of the points to reveal the underlying image.
Important: There may be misalignments between the panoramic image and the point cloud. This style is not recommended for performing inventories to minimize the risk of errors.
Map Background
The "Map Background" button allows you to choose between theme color basemap (Light/Dark) or Satellite. This lets you adjust the visual style of the map according to your preferences or the specific needs of your analysis.
Trajectory Types
In the Jakartowns 2D map, the "Trajectories" button offers users several options for managing trajectories. First, it allows enabling or disabling the display of trajectories on the map, giving control over their visibility. Then, it provides a visual representation based on the accuracy of 3D data, using a color system ranging from red to green. This visualization allows users to quickly assess the quality and reliability of the data collected.
Finally, the button allows viewing temporal trajectories, which helps observe different scanning periods and get an idea of the data's age. If you are interested in a refresh (data update), please contact us.
If the user's positional accuracy falls below Jakarto's standards, a red banner appears at the top of the screen to inform them of this situation. This banner is designed to draw attention to the fact that the user is in an area with low accuracy.
In some cases, it is possible to change the scanning time to display a scan from another day, which can help obtain more accurate data in line with Jakarto's standards.
2D Data Layer
The "2D Data Layer" button allows you to view 2D map data using tiled layers. By clicking this button, you can choose from different options such as Intensity, Verticality, Ground 2D Tiled Layers, 2.5D Tiled Layers, and Classification. Each option offers a specific representation of 2D map data, allowing you to explore information in more detail and tailored to your specific needs.
Intensity
The "Intensity" layer offers visual representations based on the amount of light reflection recorded during scanning.
Verticality
The "Verticality" layer highlights abrupt vertical breaks from the point cloud, providing better visualization of height variations. It offers a distinctive visual representation that emphasizes sudden elevation changes.
Ground 2D Tiled Layers
The "Ground 2D Tiled Layers" highlights intensity variations specific to the ground, allowing for a detailed analysis of the ground's characteristics and details in the 2D map.
2.5D Tiled Layers
The "2.5D Tiled Layers" is a digital terrain model (DTM) that provides a precise and detailed representation of ground topography
Classification
This layer visualizes the classification of objects present in the LiDAR data, using the same categories and colors as those applied to the point clouds.
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