Instructions for the analysis of case E: Shear Field 28.10.2000 okamoto@tokai.t.u-tokyo.ac.jp Flow Field * The flow field was shear field generated by computer. * The field parameter is not known. * The non-uniform illumination condition was simulated. Image generation * The particle scatter was assumed to be the gaussian distribution. * The occlusion particle was considered. The intensity of the particles were linearly added. * Fill factor was assumed to be 0.7. * Particle diameters were randomly determined. The histogram of the particle diameter was gaussian distribution. * Laser light sheet intensity was assumed to be gaussian. Maximum out-of-plane velocity was set to be about 20% of laser light thickness. * Illumination intensity was varied. * The image size is 256 x 128 pixel. They are provided in tif format with a header of 285 bytes. The reference analysis for this case is : :ev_IS_size_x = 16; :ev_IS_size_y = 16; :ev_IS_size_unit = "pixel"; :ev_IS_grid_distance_x = 8; :ev_IS_grid_distance_y = 8; :ev_IS_grid_distance_unit = "pixel"; :ev_origin_of_evaluation = 8, 8; :ev_origin_of_evaluation_units = "pixel"; :ev_IS_offset = 0, 0; :ev_IS_offset_units = "pixel"; :ev_cf_fill_ratio = 0.7; The mandatory data to be provided are : Raw data : E00?_team_ref_raw.nc - the raw velocity field corresponding to the highest correlation peak outside the mask (raw) - the corresponding histogram , - 3 samples of correlation windows at x(pixels) y(pixels) 32 32 32 64 32 96 - a matrix of correlation peak height - the type of processor used - the processing time per velocity vector - Velocity distribution on the following vertical line x = 64 x = 160 x = 208 x = 224 - Velocity distribution on the following horizontal line y = 64 Post processed data : B00?_team_ref_clean.nc - the post-processed velocity fields without interpolation and/or filtering with the corresponding histogram (clean), - a flag matrix giving the location of spurious vectors and holes - a matrix of correlation peak height - the mean velocity over the map (Umean, Vmean) - the standard deviation over the map (u', v') - the total number of valid vectors - the type of processor used - Velocity distribution on the following vertical line x = 64 x = 160 x = 208 x = 224 - Velocity distribution on the following horizontal line y = 64 Interpolated data : Interpolated velocity map is optional for this set.