RTAB-Map - 3D LiDAR Scanner vs. PIX4Dcatch: 3D scanner Utilizzo e statistiche
RTAB-Map (Real-Time Appearance-Based Mapping) is an Open Source LiDAR / RGB-D / Stereo Graph-Based SLAM (Simultaneous Localization and Mapping) approach based on an online incremental appearance-based loop closure detector. The loop closure detector uses a bag-of-words approach to determinate how likely a new image comes from a previous location or a new location. When a loop closure hypothesis is accepted, a new constraint is added to the map's graph, then a graph optimizer minimizes the errors in the map in real-time. An optional memory management approach can be used to limit the number of locations used for loop closure detection and graph optimization, so that real-time constraints on large-scale environnements are always respected. ARKit's visual inertial odometry (VIO) is used as the SLAM front-end for RTAB-Map (the SLAM back-end).
* Note that unlike other scanning apps that optimize the map only after mapping, with RTAB-Map you get loop closure detection and map optimization online so you can have a live feedback to know when you have enough constraints in the map for good global optimization before stopping the scan.
*** 3D reconstruction available only with LiDAR sensor.
Features:
* Online 3D scanning/mapping of the environment.
* Online loop closure detection and map correction.
* Save in DB format (RTAB-Map desktop and rtabmap_ros format).
* Export in PLY, LAS or OBJ.
* Multi-session mapping (save and continue later).
* Use Apriltags to help finding loop closures in textureless environments.
* Mixed AR/VR First-Person in visualization mode.
* Raw ARKit data recording (up to 60 Hz!), useful to record long sessions without comprising battery life.
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With PIX4Dcatch, create 3D models and maps with your mobile device. Just point and capture to gather data, ready for accurate 3D model generation. Use it to recreate reality and measure the world around you.
You can pair it with a compatible RTK device to achieve centimeter-level accuracy for better 3D model precision and geolocation, and for performing single-point measurements.
To generate georeferenced 3D models, the collected images can be uploaded to PIX4Dcloud or exported to PIX4Dmatic. Both offer a 15-day trial to get started. Projects can also be freely exported, processed, and visualized in third-party photogrammetry software.
Workflow
1 - Scan: walk around your site. The app automatically gathers data and gives live feedback with iOS LiDAR, ensuring you capture every detail. For better accuracy, you can use either an RTK device compatible with PIX4Dcatch, our Pix4D targets with a fully automated workflow, or combine both for really accurate results.
2 - Upload or export: to process the data, upload it to PIX4Dcloud or export it to desktop software PIX4Dmatic. Get high-quality, accurate 2D and 3D outputs.
3 - Analyze and share: measure the space, share your results, and enjoy all the benefits of a detailed 3D model of your surroundings. Benefit from an immersive experience with augmented reality.
This workflow can be used for digitizing construction sites, measuring volumes (of stockpiles and other objects), keeping permanent records of underground utilities, and verifying your previously captured 3D models in AR in real time. Measure single points with confidence by using our compatible RTK devices. Digitize reality with your mobile phone.
Compatibility:
• Optimized for LiDAR-equipped devices
• All ARKit-enabled devices
• RTK devices: Pix4D adapted viDoc RTK, Emlid Reach RX, Trimble DA2, Bad Elf Flex, Leica Zeno FLX100 plus
Usage information guidance:
Ensure the app is up to date.
Pix4D accepts no liability for damage, injuries, or legalities from the misuse of this app. Use only in safe environments.
Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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RTAB-Map - 3D LiDAR Scanner VS. 
PIX4Dcatch: 3D scanner26icembre d, 2024