Table A.1
Complexity analysis of the method where I is the number of rows in the image, J is the number of columns in the image, K is the number of modes, and N is the number of images. The “cumulative complexity” field is obtained by taking the predominant complexity between the current row’s complexity and the cumulative complexity of the previous row.
| Step | Complexity | Cumulative Complexity |
|---|---|---|
| Initialisation and setup | O(1) | O(1) |
| Conversion RGB to grey (per frame) | O(I × J) | O(I × J) |
| Flipping, Cropping, Filtering, Erosion, Contrast Adjustment, Normalisation (per frame) | O(I × J) | O(I × J) |
| Barycenter (per frame) | O(I × J) | O(I × J) |
| Other operations (e.g., displaying progress) | O(N) | O(I × J + N) |
| Detrending & Data Preparation | O(N × J) | O(I × J × N) |
| Mean Amplitude Spectrum | O(J + N log N) | O(I × J × N) |
| Peak Picking | O(J) | O(I × J × N) |
| IRF estimation | O(J × K × N) | O(I × J × N) |
| Fourier decomposition | O(J × K × N) | O(I × J × N) |
| Post-processing (for all modes) | O(J × K × N) | O(I × J × N) |
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