Cite the following journal paper if you use the data shown below:
Hanbit Kang, Daehyun Kwon, Yoon-Chul Kim, "Potential benefits of polar transformation of time-frequency electrocardiogram (ECG) signals for evaluation of cardiac arrhythmia", Applied Sciences 2025 (Accepted)
Data:
Each zip file has four folders whose names indicate the category names. Under each folder, there are .png files that contain ECG spectrogram images.
polar transformed ECG spectrogram files : 30s_polar_PT.zip
rectangular ECG spectrogram files : 30s_rect_PT.zip