Fast Checkerboard Demodulation (FCD) for Synthetic Schlieren imaging Usage For all functions to work properly the scripts in sub-directory ./general should be on your MATLAB path. Usage examples are found in the ./examples sub-directory. Type help functionname on the MATLAB prompt for function ...
Instead of a random dot pattern (as usually employed in SSI), a 2D periodic pattern (such as a checkerboard) is used as a backdrop to the refractive object of interest. The range of validity and accuracy of this "Fast Checkerboard Demodulation" (FCD) method are assessed using both ...
Fast Fourier demodulationLarge density-gradient fieldShockwaveIn order to measure the large density-gradient fields of fluids such as underwater shock waves, we employed a fast Fourier demodulation called Fast Checkerboard Demodulation (FCD) method in Background Oriented Schlieren (BOS) technique. BOS ...