PPED: Periodic Phenomena Event-based Dataset

The dataset features 12 one-second sequences of periodic phenomena (rotation - 01-06, flicker - 07-08, vibration - 09-10 and movement - 11-12) with GT frequencies ranging from 3.2Hz up to 2000Hz in file formats .raw and .hdf5.

Data capture demonstration: Youtube video

<img src="https://github.com/user-attachments/assets/19ab0eb9-a2b1-4e29-8631-6f18ced515a1" alt="Ground-truth frequencies of experiments" style="width: 600px; max-width: 100%;">

Rotation

01 - High Contrast Line - 20Hz

Data visualised:

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

• at 0.006x playback (5000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/f7e53d63-5c10-4d68-a89a-57f8fc02e76f" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

02 - Velcro (front view) - 21.1Hz

Data visualised:

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

• at 0.006x playback (5000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/3c53dd96-8658-4578-8bb3-dc9c2bdcc149" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

03 - Velcro (side view) - 26.3Hz

Data visualised:

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

• at 0.006x playback (5000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/8d53593a-336e-4163-8d75-d9ccfda3e85c" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

04 - High Contrast Dot - 19.6Hz

Data visualised:

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

• at 0.006x playback (5000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/2bcb7bec-0fdf-4075-bb46-03d211df3a13" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

05 - Hand Spinner - 4.7Hz

Data visualised:

• at 0.3x playback (100 fps) - link

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/cf02aa50-50c1-4acb-b621-6797d7d71fd5" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

06 - Spider - 3.2Hz

Data visualised:

• at 0.3x playback (100 fps) - link

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/a45201ad-15e6-4e72-b72f-5b7bc938be49" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

Flicker

07 - LED - 2000Hz

Data visualised:

• at 0.003x playback (10000 fps) - link

• at 0.0006x playback (50000 fps) - link

• at 0.0003x playback (100000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/8f555d36-7b2a-4442-883e-e77a7612f48d" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

08 - Screen - 240Hz

Data visualised:

• at 0.006x playback (5000 fps) - link

• at 0.003x playback (10000 fps) - link

• at 0.0006x playback (50000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/c0897771-05ce-41a8-9ae7-20d657330513" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

Vibration

09 - Speaker - 98Hz

Data visualised:

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

• at 0.006x playback (5000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/75581d3e-9664-4794-bd7f-aa4fbcb4aa72" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

10 - Motor - 40Hz

Data visualised:

• at 0.3x playback (100 fps) - link

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/4e8a26c6-43d7-4c02-a095-2341f3f79d40" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

Movement

11 - Chain Side - 28.7Hz

Data visualised:

• at 0.3x playback (100 fps) - link

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/5816c651-509c-4fc7-9d56-21b8c5d97ea6" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">

12 - Chain Top - 23Hz

Data visualised:

• at 0.3x playback (100 fps) - link

• at 0.06x playback (500 fps) - link

• at 0.03x playback (1000 fps) - link

250ms of the data visualised in XYTime space:

<img src="https://github.com/user-attachments/assets/a3ed43cd-def1-4f8e-9e2f-0edee9bd1f07" alt="Data visualised in XYTime space" style="width: 600px; max-width: 100%;">