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Daily Arxiv

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SecurePose: Automated Face Blurring and Human Movement Kinematics Extraction from Videos Recorded in Clinical Settings

Created by
  • Haebom

Author

Rishabh Bajpai, Bhooma Aravamuthan

Outline

SecurePose is an open source software that provides reliable de-identification and automated kinematics extraction simultaneously from videos taken in a clinical environment with smartphones/tablets. It extracts full body kinematics via pose estimation using OpenPose, identifies patients by tracking individuals, and then blurs faces accurately in the videos. Using 116 gait videos of children with cerebral palsy, it evaluates the de-identification accuracy and the reliability of the intermediate step of kinematics extraction, showing that it outperforms six existing methods in automatic face detection and achieves similar accuracy as manual blurring much faster (91.08% faster). Ten experts validated the usability of SecurePose through the system usability scale scores. These results demonstrate that SecurePose is a practical and effective tool that enables accurate kinematics extraction in clinical settings while protecting patient privacy.

Takeaways, Limitations

Takeaways:
We present an effective method to simultaneously achieve privacy protection and accurate kinematic analysis of patient videos.
It enables automated anonymization and kinematics extraction that is much faster and more efficient than traditional manual methods.
It is open source, highly accessible, and can be used in a variety of research and clinical settings.
Its performance and reliability were verified through empirical studies targeting children with cerebral palsy.
Limitations:
Currently, only validation results for gait videos of children with cerebral palsy are presented, so generalizability to other conditions or environments requires further study.
Since we rely on the accuracy of OpenPose, errors in pose estimation can affect the accuracy of de-identification and kinematics analysis.
Additional validation of performance under different camera angles and lighting conditions is required.
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