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localdevices / pyorc

Surface velocity, object tracking, and river flow measurements in an open-source API
GNU Affero General Public License v3.0
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Automated selection of `window_size` and `resolution` #66

Open hcwinsemius opened 2 years ago

hcwinsemius commented 2 years ago

With highly turbulent flows patterns matching may require larger interrogation windows. Automated by doing a short velocimetry estimate with filtering over only a few frames with different settings.

amirdastgheib commented 10 months ago

Hi I have a problem with selecting the optimal values for window_size and target resolution. My river width is around 50 m and the discharge is 130 (m3/s) so, the real flow velocity is around 2(m/s) in reality. I have used OpenRiverCam and I selected window_size = 70 with different target resolution = 0.05, 0.06, 0.07, 0.08 and for each target resolution the mean discharge (quantile 2) shows different value. and the same for changing window_size with fix target resolution. However, changing mean v_eff is not that much and is from 2.2 to 2.4. I am not sure which window_size and target resolution would be the optimum values for this river. Also, why when I changed the window_size and target resolution, discharge shows more fluctuations in comparison with v_eff??