Correction: Automatic hoof-on and -off detection in horses using hoof-mounted inertial measurement unit sensors.

The study focuses on the development and accuracy of an automatic method for detecting hoof-on and -off events in horses, using hoof-mounted inertial measurement unit sensors. Some errors occurring in the previous version of the article, which was originally published with the DOI: 10.1371/journal.pone.0233266, are also addressed here.

Introduction

• The importance of understanding a horse’s gait and locomotion lies in both health diagnostics and athletic performance improvement. The timing of a horse’s hoof contact with the ground (the ‘hoof-on’ event) and the release from the ground (the ‘hoof-off’ event) are important variables when studying a horse’s gait. Thus, accurately detecting these events provides valuable data to veterinarians, horse trainers, and researchers. This paper addresses the need for an automatic method to achieve this.

Methodology and Findings

• To detect hoof-on and -off events, the researchers used hoof-mounted inertial measurement unit sensors, which capture motion data including acceleration and angular velocity. Using specific algorithms, the system can estimate the times of hoof-on and -off events. The methods for obtaining this estimation, as well as the calibration of the sensors and the selection of eligible horses for the experiment, will be further detailed in the article.
• The findings will show the performance of the system, indicating its accuracy in detecting the aforementioned events when compared to a gold-standard method. The efficacy of the detection system is evaluated against the gold-standard method that entails visual identification of hoof events from video data. The observed discrepancies, errors, as well as the strengths of the system, will be discussed.

Correction

• The researchers highlight that this article corrects the initially published paper with the DOI 10.1371/journal.pone.0233266. Any false information or inaccuracies that were present in the original article will be addressed in this corrected version. The specifics of the errors that are being corrected will be indicated in the article.