Intel RealSense D435i Stereo Depth Camera with IMU
The Intel RealSense D435i combines wide-angle stereo depth, a color camera, and a six-axis IMU in one USB-connected sensor. It is designed for projects that need scene geometry tog ether with camera-motion measurements, including mobile robots, handheld scanning, and visual-inertial research.Its D430 stereo module uses a 50 mm baseline and global-shutter depth imagers, while the RGB camera provides 1920 x 1080 color at 30 fps. Timestamped accelerometer and gyroscope streams can be consumed by a host-side fusion pipeline. The camera supplies sensor data; pose estimation, SLAM, navigation, and robot control remain functions of the application software.For development, use the RealSense SDK to inspect streams, access calibration data, record datasets, and build C/C++ or Python applications. Match the camera firmware and ROS wrapper to the chosen SDK release; the host remains responsible for recognition, reconstruction and robot behavior.Features Stereo geometry - 50 mm baseline and 0.3-3 m ideal range help define the sensor placement and scene size. On-camera depth computation - The D430 module works with Vision Processor D4 to generate depth before data reaches the host. Active infrared projection - The built-in infrared projector adds texture for active stereo; ambient texture and illumination also influence the result. Motion-aware sensor choice - Global-shutter depth reduces rolling-shutter distortion, but exposure and camera movement still affect image quality. Depth stream selection - 1280 x 720 at 30 fps; 848 x 480 at up to 90 fps (USB 3). Choose a profile that the host can sustain alongside the required color and motion streams. Color information - 1920 x 1080 at 30 fps. Use intrinsic and extrinsic calibration when converting pixel coordinates or generating textured point clouds. Inertial measurements - The six-axis IMU supplies accelerometer and gyroscope data for application-side fusion; it does not run a complete navigation algorithm. Compact physical integration - 90 x 25 x 25 mm housing; 75 g nominal (+/-10%). Allow clearance for connectors, cable bend radius and the optical field of view. Developer tooling - Use the compatible RealSense Viewer and SDK examples to inspect streams, record datasets and check calibration before integrating a custom application. System-level validation - Test representative target materials, illumination, motion, host bandwidth and thermal conditions before relying on measurements in an operating robot. Specifications Parameter Value Model Intel RealSense D435i Depth technology Active stereo Depth module D430 Vision processor RealSense Vision Processor D4 Stereo baseline 50 mm Depth imaging Global shutter Depth output profiles 1280 x 720 at 30 fps; 848 x 480 at up to 90 fps (USB 3) Depth field of view (H x V) 87 x 58 deg at 2 m, HD 16:9 Ideal working range 0.3-3 m Minimum-Z distance 280 mm at 1280 x 720; 195 mm at 848 x 480 Z-accuracy reference +/-2% at distances up to 2 m, 80% ROI and HD resolution, under datasheet test conditions Depth optical filter All-pass Color output 1920 x 1080 at 30 fps Color field of view (H x V) 69 x 42 deg Inertial measurement unit Six-axis accelerometer + gyroscope Host interface USB 3 Type-C Dimensions (W x H x D) 90 x 25 x 25 mm Weight 75 g nominal (+/-10%) Power supply USB bus power; consumption depends on enabled streams and projector settings Validated ambient operating range 0-35 deg C Powered back-case temperature range 0-50 deg C Mounting 1/4-20 tripod attachment and model-specific mounting points; refer to CAD drawings Software RealSense SDK 2.0; C/C++, Python and ROS integrations through compatible SDK/wrapper releases Product Comparison Parameter RealSense D435i RealSense D435 Orbbec Gemini 335 Technology / filter Active stereo; All-pass Active stereo; All-pass Active/passive stereo; all-pass Working range / mode 0.3-3 m ideal 0.3-3 m ideal 0.26-3 m ideal Stereo baseline 50 mm 50 mm 50 mm Depth FOV (H x V) 87 x 58 deg at 2 m, HD 87 x 58 deg at 2 m, HD 90 x 65 deg at 2 m; 1280 x 800 Representative depth output 1280 x 720 at 30 fps; 848 x 480 at up to 90 fps (USB 3) 1280 x 720 at 30 fps; 848 x 480 at up to 90 fps (USB 3) 1280 x 800 at 30 fps Depth sensing / shutter Global shutter Global shutter Global shutter Color output 1920 x 1080 at 30 fps 1920 x 1080 at 30 fps 1920 x 1080 at 30 fps IMU Yes No Yes Connection USB 3 Type-C USB 3 Type-C USB 3 Type-C Protection No IP rating stated No IP rating stated IP5X Software RealSense SDK 2.0 RealSense SDK 2.0 Orbbec SDK Choosing between models: D435i adds inertial data to D435 without changing the basic 50 mm stereo geometry. Gemini 335 is an Orbbec alternative with an IMU, a 90 x 65 degree depth FOV, and 1280 x 800 depth at 30 fps.Compare the stated resolution, working distance and sensing mode together. FOV and depth range vary with configuration and scene conditions; changing camera brands also requires checking drivers, coordinate frames, calibration, cabling and mounting.Application.rs-app-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px}.rs-app-card{display:grid;grid-template-rows:subgrid;grid-row:span 3;gap:0;margin:0!important}.rs-app-card .rs-app-frame{aspect-ratio:16/9;display:flex;align-items:center;justify-content:center}.rs-app-card img{width:100%;height:100%;object-fit:contain;margin:0}.rs-app-card h3{margin:14px 0 8px!important;line-height:1.35}.rs-app-card p{margin:0!important}.rs-app-text h3{margin:20px 0 8px}.rs-app-text p{margin:0 0 12px}@media(max-width:640px){.rs-app-grid{grid-template-columns:1fr}} Mobile robot perception Use depth and RGB as inputs for local obstacle awareness, scene understanding, and navigation research. Position the camera so the useful sensing volume covers the objects of interest, and test the robot's own motion and lighting conditions. Visual-inertial odometry research Combine timestamped depth, RGB, accelerometer and gyroscope measurements in an appropriate host-side estimator. The IMU supports sensor-fusion development but does not directly balance a robot or guarantee drift-free localization. Object scanning and reconstruction Record calibrated depth and color frames for host-side point-cloud registration, mesh generation, and digital capture. Reflective, transparent, very dark, or occluded surfaces need evaluation rather than being assumed measurable. Robot manipulation and workcell vision Estimate object position or surface geometry for pick-and-place and part-verification pipelines. Check the minimum sensing distance against gripper reach and tool clearance before designing the mounting bracket. Interactive vision and AR research Combine RGB with depth-based foreground segmentation for gesture, presence, or spatial-overlay experiments. Recognition and tracking models run in the application; the camera does not provide a complete interaction system by itself. Logistics and industrial inspection Capture scene geometry around shelves, workbenches, and moving equipment for positioning or dimension-estimation trials. Validate required measurement tolerance and motion blur with representative parts and operating speeds. Education and sensor-fusion research Use recorded streams and calibration data to study depth sensing, coordinate transforms, timing and reconstruction. Keep the SDK, firmware, stream profiles and host configuration documented so results can be reproduced. Aerial and field-robotics evaluation Assess the D435i as a sensor in a controlled research platform after checking payload, camera motion, vibration, cabling and the documented environmental limits. Depth measurements are not a substitute for a complete flight-safety or navigation system. Hardware OverviewReference DocumentsDocuments and ManualsD400 Series DatasheetSDK and SoftwareRealSense SDK 2.0FirmwareD400 Firmware ReleasesCAD and DrawingsD400 Camera CAD FilesPacking List SKU Item Quantity Intel-D435i Intel Realsense D435i Depth Camera 1 Stand 1 Cable 1 FAQ .faq-accordion details{border-bottom:1px solid #e6eef8;padding:14px 0} .faq-accordion summary{list-style:none;cursor:pointer;font-size:16px;font-weight:700;color:#1f2933;position:relative;padding-right:32px} .faq-accordion summary::-webkit-details-marker{display:none} .faq-accordion summary::after{content:"\203A";position:absolute;right:4px;top:50%;transform:translateY(-50%) rotate(90deg);color:#007fff;font-size:28px;line-height:1;transition:transform .2s ease} .faq-accordion details[open] summary::after{transform:translateY(-50%) rotate(270deg)} .faq-accordion p{margin:12px 0 0;color:#4b5563;line-height:1.65} How does D435i differ from the other RealSense model in the comparison?D435i adds accelerometer and gyroscope measurements to the D435-style depth platform, supporting host-side visual-inertial research.How does it compare with Orbbec Gemini 335?D435i adds inertial data to D435 without changing the basic 50 mm stereo geometry. Gemini 335 is an Orbbec alternative with an IMU, a 90 x 65 degree depth FOV, and 1280 x 800 depth at 30 fps. Compare the profile-specific parameters in Product Comparison before changing hardware or software.What depth resolutions and frame rates are available?1280 x 720 at 30 fps; 848 x 480 at up to 90 fps (USB 3). Maximum resolution and maximum frame rate are not necessarily available in the same profile; query the connected device in a compatible Viewer or SDK.How close can the camera measure?280 mm at 1280 x 720; 195 mm at 848 x 480.Can this camera be used outdoors?Stereo depth can be evaluated indoors and outdoors, but illumination, target reflectivity, weather and the enclosure limits still matter. This model should not be assumed weather-sealed.Does the camera include an IMU?Yes. It provides three-axis acceleration and three-axis angular velocity for host-side processing. The IMU does not by itself provide drift-free pose, robot balance control or a complete SLAM system.Which software and ROS setup should I use?RealSense SDK 2.0 provides stream access and calibration tools, with C/C++, Python and ROS integration options. Match SDK, firmware, wrapper release and operating system rather than assuming every historical ROS distribution works with the newest package.What should I check for a multi-camera setup?Hardware synchronization requires the correct wiring and compatible operating modes. Sharing a USB hub can constrain simultaneous streams; depth and RGB synchronization depends on the chosen profile and model.How is the camera powered?The camera takes power from its USB connection. Use a suitable data-capable cable and a host port with adequate power and bandwidth; hubs, extensions and multiple cameras should be tested under the full stream load.What is included in the package?The package contains 1 Intel Realsense D435i Depth Camera, 1 Stand, 1 Cable. Downloadable software and technical files are listed separately in Reference Documents.
