Article
Vertical jump data from inertial and optical motion tracking systems
Autor
Rico-Garcia, Mateo
Botero-Valencia, Juan
Hernández-García, Ruber
Institución
Resumen
Motion capture (MOCAP) is a widely used technique to record human, animal, and
object movement for various applications such as animation, biomechanical assessment, and control
systems. Different systems have been proposed based on diverse technologies, such as visible light
cameras, infrared cameras with passive or active markers, inertial systems, or goniometer-based
systems. Each system has pros and cons that make it usable in different scenarios. This paper
presents a dataset that combines Optical Motion and Inertial Systems, capturing a well-known
sports movement as the vertical jump. As a reference system, the optical motion capture consists
of six Flex 3 Optitrack cameras with 100 FPS. On the other hand, we developed an inertial system
consisting of seven custom-made devices based on the IMU MPU-9250, which includes a three-axis
magnetometer, accelerometer and gyroscope, and an embedded Digital Motion Processor (DMP)
attached to a microcontroller mounted on a Teensy 3.2 with an ARM Cortex-M4 processor with
wireless operation using Bluetooth. The purpose of taking IMU data with a low-cost and customized
system is the deployment of applications that can be performed with similar hardware and can be
adjusted to different areas. The developed measurement system is flexible, and the acquisition format
and enclosure can be customized. The proposed dataset comprises eight jumps recorded from four
healthy humans using both systems. Experimental results on the dataset show two usage examples
for measuring joint angles and COM position. The proposed dataset is publicly available online and
can be used in comparative algorithms, biomechanical studies, skeleton reconstruction, sensor fusion
techniques, or machine learning models.