RTAB vs DepthCapture｜LiDAR Point Cloud

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.

DepthCapture records RGB and depth on iPhone/iPad. View RGB, depth maps and 3D point clouds live for measurement and research. ―――――――――― ■ Depth sources Sources depend on your device: ・LiDAR ・LiDAR+Spatial ・TrueDepth ・Stereo Depth ・AI Depth LiDAR uses the rear sensor, TrueDepth the front camera. Stereo requires a compatible camera. LiDAR+Spatial requires a supported LiDAR device and adds camera position/orientation in local capture space. AI Depth estimates relative depth from images; matching LiDAR or TrueDepth distance accuracy is not guaranteed. ―――――――――― ■ Record RGB + Depth Snapshot Capture saves RGB, Depth and capture info; Stream Recording saves continuous RGB-D. RGB: ・JPEG ・PNG Depth: ・BIN ・16-bit PNG ・TIFF ・EXR ―――――――――― ■ Live depth preview View RGB and Depth live with color maps: ・Grayscale ・Blue-Red ・Viridis ・Inferno Use an automatic or fixed depth range to check data and adjust subjects or settings. ―――――――――― ■ Live 3D point clouds View live 3D point clouds from depth and camera info, colored by RGB or depth. ―――――――――― ■ Object detection Detect selected categories, such as people, cars or animals. Overlay regions on RGB; highlight or show only points in those regions. Enable during capture to save results for in-app review and export as PNG masks + JSON info. Detection display does not alter saved RGB/Depth or exported point clouds. Detection may fail or skip recording frames depending on conditions and processing load. ―――――――――― ■ Export point clouds Export saved Snapshots or Stream Recording frames: ・PLY ・GLB ・glTF ・PCD ・LAS ・CSV ・E57 ・XYZ ・XYZRGB XYZ: coordinates only. XYZRGB: coordinates + saved RGB colors. E57 supports only saved LiDAR/LiDAR+Spatial data with the required depth/camera information. LiDAR+Spatial aligns only frames with valid poses in one coordinate system. Use with 3D software, point-cloud tools or Python. ―――――――――― ■ Continuous RGB-D recording Set saving intervals for Stream Recording. Save as RGB/Depth file sequences or ROS2-compatible MCAP, which can include RGB, Depth, CameraInfo, TF and IMU / Device Motion for robotics or computer vision. ―――――――――― ■ Capture metadata Settings and camera info, when available: ・Camera Intrinsics ・Extrinsic Matrix ・Lens Distortion ・Camera pose/tracking status (LiDAR+Spatial) ・RGB / Depth resolution ・Depth Source ・Depth Accuracy / Quality ・Depth Filtering ・Capture settings Snapshots and recordings include manifests and metadata for checking capture conditions on Mac/PC. ―――――――――― ■ Capture settings Settings vary by source/device: ・Depth Filtering ・Depth FPS ・Depth Resolution ・RGB Resolution ・RGB / Depth Synchronization ・Depth Range ・Save Depth Preview Balance quality, processing load and file size. Use built-in presets or save, reuse and share your own. Saving or importing custom presets requires a feature unlock purchase. ―――――――――― ■ Sync multiple devices Bluetooth syncs Snapshot capture and Stream Recording start/stop operations. Only operation timing is synced: set capture settings per device; image acquisition times may differ. ―――――――――― ■ Review saved data Saved Data shows Snapshot RGB, Depth and 3D Point Cloud, and lets you scrub/play Stream Recording frames. Share sessions or access them in Files. ―――――――――― ■ Uses ・LiDAR/depth-sensor checks ・3D point-cloud capture/viewing ・RGB-D collection ・Computer vision ・Machine-learning datasets ・Robotics/ROS2 ・AR/3D sensing: capture/validation ・Research/experiments/prototyping ・Depth-source comparison/testing Sources, resolutions and frame rates vary by device/camera. Without LiDAR, supported TrueDepth, Stereo Depth or AI Depth may be available. Advanced features can be unlocked by a one-time purchase or an auto-renewing monthly plan. The monthly plan includes ad removal. Watch rewarded ads for temporary feature access. ―――――――――― Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/