Evaluation of Kinect 3D Sensor for Healthcare Imaging

Area of Science:

• Biomedical Engineering
• Medical Imaging Technology
• Human-Computer Interaction

Background:

• Microsoft Kinect, initially a gaming sensor, is increasingly explored for healthcare imaging due to its cost-effectiveness and safety.
• Existing research reviews Kinect's applications in health monitoring, screening, rehabilitation, and assistive systems.

Purpose of the Study:

• To assess the suitability of Microsoft Kinect sensors for healthcare imaging applications.
• To compare the performance of Kinect I and Kinect II in terms of accuracy, precision, and resolution for healthcare scenarios.

Main Methods:

• Evaluated Kinect I (structured light) and Kinect II (time-of-flight) using cardboard models of varying skin colors.
• Measured performance at distances from 0.5 to 1.2 m and angles up to 75°.
• Assessed accuracy, precision, and resolution of the generated 3D images.

Main Results:

• Both Kinect I and Kinect II demonstrated high accuracy (<2 mm) and precision (<2 mm error).
• Kinect I achieved higher resolution (390 points/cm²) and is suitable for shorter distances.
• Kinect II offered superior precision and is better for imaging structures angled over 60°, like curved surfaces.

Conclusions:

• Microsoft Kinect sensors provide adequate performance for diverse healthcare imaging tasks, despite not being medical devices.
• Kinect I is recommended for short-range imaging, while Kinect II is preferred for imaging highly curved anatomical regions (e.g., face, breast).
• Object color can impact measurement range and precision, requiring consideration in application design.