The Effect of Image Input Transformation from Inertial Measurement Unit Data on the Classification of Skateboarding Tricks

Muhammad Amirul Abdullah, Muhammad Ar Rahim Ibrahim, Muhammad Nur Aiman Shapiee, Muhammad Aizzat Zakaria, Mohd Azraai Mohd Razman, Rabiu Muazu Musa, Anwar P. P. Abdul Majeed*

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

1 Citation (Scopus)

Abstract

This study aims to improve the classification of flat-ground tricks namely Ollie, Kickflip, Shove-it, Nollie and Frontside 180 through the identification of significant input image transformation on different transfer learning models. Six goofy skateboarders (23 years of age ± 5.0 years’ experience) executed five tricks for each type of trick repeatedly on a customized ORY skateboard (Inertial Measurement Unit (IMU) sensor fused) on a cemented ground. From the IMU data, six raw signals were extracted. The best input image transformation and transfer learning model were identified through two input image transformations synthesized, namely raw data (RAW) and Fast Fourier Transform (FFT), and six transfer learning models based on default arguments from the Keras library. The variation of the SVM models (via different hyperparameters) was evaluated both on input image transformation and on transfer learning model in classifying the skateboarding tricks. It was shown from the study that RAW input image on three transfer learning models (DenseNet121, InceptionResNetV2, and ResNet101) demonstrated the 100% accuracy on all train, train and validation dataset. It could be concluded that the proposed method is able to improve the classification of the skateboarding tricks well.

Original languageEnglish
Title of host publicationRiTA 2020 - Proceedings of the 8th International Conference on Robot Intelligence Technology and Applications
EditorsEsyin Chew, Anwar P. P. Abdul Majeed, Pengcheng Liu, Jon Platts, Hyun Myung, Junmo Kim, Jong-Hwan Kim
PublisherSpringer Science and Business Media Deutschland GmbH
Pages424-432
Number of pages9
ISBN (Print)9789811648021
DOIs
Publication statusPublished - 2021
Externally publishedYes
Event8th International Conference on Robot Intelligence Technology and Applications, RiTA 2020 - Virtual, Online
Duration: 11 Dec 202013 Dec 2020

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference8th International Conference on Robot Intelligence Technology and Applications, RiTA 2020
CityVirtual, Online
Period11/12/2013/12/20

Keywords

  • Classification
  • Machine learning
  • Skateboarding
  • Support Vector Machine
  • Transfer learning

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