Supplementary data and software for "Fully non-contact discharge measurement in shallow streams via physics-based water-surface image analysis"

This dataset supports the following publication Dolcetti, G., Bahmanpouri F. and Pilbala, A. "Fully non-contact discharge measurement in shallow streams via physics-based water-surface image analysis". Hydrological Sciences Journal, 71(4), 693–706. https://doi.org/10.1080/02626667.2025.2596270 Contents: - images.zip: folder with the set of orthorectified images of the water surface recorded on the River Fersina. - hydroprofiler_import_1.xlsx: velocity profiles measured with the velocity profiler - Profiler.mat: .mat file with pre-processed Profiler data. - analysis_extended_IWV.m: Matlab code for the extended IWV approach. - analysis_step1_initialisation.m: Matlab code for the initialisation step of the combined IWV-entropy approach (calculation of the initial approximate surface velocity distribution assuming infinite water depth). - analysis_step2_optimisation.m: Matlab code for the optimisation step of the combined IWV-entropy approach (refinement of the surface velocity distribution and reconstruction of the bathymetry combining the IWV approach with the entropy framework). - analysis_step3_expansion.m: Matlab code for the expansion step of the combined IWV-entropy approach (calculation of the 2D distribution of the flow velocity over the whole river cross-section using the entropy approach). - kOmega_combined.m: modification of the original kOmega code to allow the combination with the entropy approach. The original kOmega code was retrieved from https://doi.org/10.5281/zenodo.7998890 Running the codes: To run the code, unzip the folder images.zip and add hydroprofiler_import_1.xlsx and Profiler.mat to the workspace. Note that kOmega requires the installation of Matlab Optimization Toolbox.