SIMI Motion 3D Motion Analysis System
(Also known as: Sports Technology Diagnostic System, 3D Analysis System, Gait Analysis System, Motion Capture System)
GermanySIMI is a global leader in video motion capture technology. The SIMI Motion 3D technology motion analysis system was introduced to China in 2000, participating in the scientific research efforts for the Sydney, Athens, Beijing, London, Rio, and Tokyo Olympics, as well as preparing for the National Games in sports provinces and for mainstream sports universities, sports vocational colleges, and numerous normal universities' sports colleges.
The system is widely applied in research fields such as sports project action technique diagnosis, rehabilitation gait analysis and evaluation, bipedal robots, comparative medicine, etc.
Product Description:
Capture Method： During indoor marker point placement for SIMI Motion 3D motion analysis system, use the automatic capture feature. Manual capture without markers, semi-automatic capture at color edges.
Indoor or outdoor conditions are complex, such as numerous occlusions due to rotational movements, and limited camera usage. A semi-automatic capture method combining automatic and manual operation is employed. When marker points cannot be used outdoors, the manual capture feature for automatically detecting color variation patches can be utilized.
Calibration Method： Select the appropriate calibration frame for different scenarios. Available 3D calibration frames include: DLT Radiation-type 3D Calibration Frame, Large Range DLT 3D Calibration Stand, Micro DLT 3D Calibration Frame, Shape DLT 3D Calibration Frame, T+L Type Magic Stick 3D Calibration Frame (with indoor and outdoor models), Calibration Plate (for lens distortion correction), and Full Range Mobile Tracking Photography Calibration System.
Software can detect and verify the accuracy of calibration data, as indicated by reports.
Number of Cameras：3D data analysis requires at least two or more cameras. The SIMI Motion 3D system offers a choice of 2-8 cameras.Three-dimensional data analysis requires that both cameras capture the tracking point simultaneously to obtain the point's 3D spatial data.
Due to the diversity of human movements and postures captured, especially those with significant rotations, inTwo cameras experienced severe obstruction of the tracking points during shooting, so increasing the number of cameras was to minimize the issues caused by the obstructions.
Camera Types：The SIMI Motion3D camera system is categorized into several types: cable-synchronized data collection, large venue large-aperture zoom remote control,低温-resistant for winter projects, underwater, and wireless remote control data collection.
Capture and Shooting Configuration：Multiple AVI high-speed cameras + data cables + sync and power cables + computer systems for data collection and storage.
Camera specificationsSIMI software adjustment, real-time AVI video transmission to the SIMI software, one-click synchronization and collection within the software. Advantages include high collection efficiency, video format software compatibility, and built-in synchronization points. Such cameras generally lack storage and power supply functions, requiring customized computer servers for collection and storage based on frame rate, pixel count, and recording time. Varying camera parameters, lenses, and transmission methods must be configured for computer servers according to the customer's application scenario. AVI format video data is quite large, demanding high hardware requirements for transmission and storage. Currently, all global video optical capture system software can only process AVI uncompressed original format video.
Self-contained with storage and power supplyAVI high-speed cameras are very expensive, starting at over 150,000. They don't offer one-touch simultaneous capture; video needs to be imported post-production. For synchronization, an additional synchronization device is required.
Capture and Shooting Configuration Two： In situations where cable installation is not feasible, such as frequent travel, competition venues, or other special environments, an independent MP4 high-speed camera can be used. Format conversion can be performed post-event, then import into the SIMI software. Find synchronization points before using it, as the advanced conversion software offers good stability.
Due toAVI videos are uncompressed and have an extremely large data volume per second. The same second of video in AVI format and compressed formats like MP4/MOV can differ by several dozen times in data volume. They require very high hardware for transmission and storage. The AVI format has been abandoned in the consumer field, with MP4, MOV, and other compressed formats now being used. MP4 and MOV video formats must be in H.264 to be converted; otherwise, common conversion software may result in dropped frames.
Fixed-point shooting and moving camera shots： Each camera and environment must establish spatial relationships to calculate the three-dimensional position and displacement information of all tracking points within the software. Therefore, motion capture systems require fixed-point shooting. After calibration, the lens and the focal length of the camera body must not undergo any minor changes. Any variation at any stage will invalidate the data. The characteristic of fixed-point shooting is that the larger the captured object appears in the video, the higher the accuracy; conversely, the smaller the object, the lower the accuracy.
For analysis of projects involving take-off processes with a running start, spot filming is only suitable for motion analysis in small-scale spaces. To address this challenge,The SIMI Motion 3D System includes an optional "Motion Tracking Photography" module and a customizable calibration system. While in operation, the camera's lens can pan, tilt, and zoom, maintaining a larger proportion of the athlete within the frame to ensure analysis accuracy. This shooting method requires the full-field deployment of numerous measurement points in the running area to establish a specialized coordinate system.
Capture ObjectCan be human, as well as capture motion equipment, animals, etc......
Data typesGains various joint angles, angular velocities, distances, velocities, and accelerations; calculates the angles formed by three or four points in a plane or space; the angle to a coordinate plane and spatial distance parameters; coordinate system translation and rotation, motion cycle analysis, human center of gravity, trajectory, and other data. Also, it can obtain the trajectory, angle, velocity, and acceleration of the equipment.
Presentation MethodUpon completion, you can directly view the digital simulation of human stick figures, the simulated images of equipment, and various data curves.360-degree playback with any angle viewing of 3D stick figures simulating human movements and equipment. Ideal for coaches and athletes for post-event detailed analysis. Data and video content can be output as PDF reports, with raw data exportable in Excel spreadsheet format. Strobe trail residue, with strobe interval time adjustable per frame.
Additional Features：
Set the interval of track residue, line color, and line thickness, synchronize the display of analysis data curves, video images, and bar graph video playback frequency adjustment, and show on the same screen.48 video frames.
Analyze joint point image zoom:While manually parsing, when displaying the full video screen, the cursor moves accordingly.Real-time split-screen display of locally enlarged images of required joints (magnification level freely adjustable), making operation easier and significantly enhancing parsing accuracy.
Multi-image on-screen analysis: During 3D analysis, images captured by multiple cameras can be displayed simultaneously on the monitor. When a part of the body is obscured, this part can be observed from the images captured by other cameras, thus resolving the blind spots issue that exists in conventional analysis systems.:
Single-image measurement： No need to analyze each of the continuous dozens of images individually; the system's single-image measurement can complete certain motion analysis tasks (such as the proportion of the three jumps in a triple jump) including angle and distance measurements. It is adaptable to rapid feedback and teaching. It can be displayed on a single page.On an A4 size sheet, displayed in the form of an image, various video clips are shown, with the interval between frames freely adjustable.
Image Analysis Mirror and Rotation Features： The image rotation feature maximizes the use of the image frame size, ensuring that the subject captured is as large as possible within the frame to enhance the precision of analysis. The mirror image analysis function allows for alignment of the motion direction of different human or object analysis images, facilitating comparison and analysis. This system feature provides great flexibility when filming motion technique videos.
Human body segment parameters:(Adaptable to the physical characteristics of Chinese people) The parameters of the human body model are open, and not only can the center of gravity of the body and the center of gravity of the joints be usedClauser, deeva, Hanavan, Gubitz, and Dempster mathematical models are available. Users can also edit their own human parameter files based on their analytical needs (2D, 3D, and body segment numbers). This file is a plain text file, which can be easily edited and stored using any text editing software in a specific data format. It can be called for body center of gravity calculations.
Robust computing capabilities：There are numerous data processing methods, such as calculating square roots, differentials and integrals, spectral analysis, Fourier processing, low-pass filtering, spline functions, and automatically or interactively determining offsets. It can calculate angles formed by three or four points in a plane or space, angles with a coordinate plane, and data on distances between planes and space. It can also calculate moving averages and transformations like translations and rotations of coordinate systems.Can automatically define angles, distances, and speeds as well as accelerations.
Multiple data format outputThe data from system analysis can be output in text format, compatible with a variety of other software. It can be applied to other spreadsheet software (such as Excel) for further processing and analysis, and can also be output in formats suitable for various animation creation applications (like 3D MAX, Poser, Lightwave, Cinema 4D, etc.), and used for animating human movements and creating teaching materials.
Courseware productionEasily create images, charts, documents, tables, and slides for presentations.
External data interfaceThe system is an open biomechanical analysis platform with excellent expandability. Force plates: (such as KISTLER, AMTI, Bertec), insole pressure distribution measurement systems (such as FSCAN Tekscn, NOVEL, Paromed, and Medilogic, etc.), and muscle activity (EMG) systems like Delsys, Biovision, and Noraxon. The above measurement data can be input into the system via external data interfaces and displayed and compared side-by-side with kinematic data obtained from video analysis.
Force measurement platforms, EMG, and insole pressure measurement require additional software modules and hardware connections for simultaneous collection and analysis. They can be procured all at once or gradually in stages based on budget availability.
Data Output：3D data can be output in various animation software formats (e.g., BVH, Maya, LWS, Filmbox), and supports multiple data formats for input and output (C3D, TXT, ASCII, etc.).
