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Points and Tangents (in C++; for a Matlab implementation, see http://www.mathworks.com/matlabcentral/fileexchange/45634-points-and-tangents)
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Points and Tangents Captures relevant points and tangents from images, via Morlet wavelet filtering. Should be cross platform, although I only tested it in OS X. For a Mac-only version, see https://github.com/cicconet/PAT_Mac. main.cpp Main file with examples for image IO, wavelet design, wavelet filtering, and capturing points and tangents. PATImage Image IO, using the PNG library. PATWavelet Morlet wavelet structure. PATConvolution Handles convolutions. Convolution is implemented locally, so it’s not as fast as in your favorite convolution library. PATCoefficients Main class. Captures relevant points and their tangents. PAT.xcodeproj Xcode project file, in case you use Xcode. To compile on Terminal, type g++ *.cpp -o pat -I/usr/local/include -L/opt/local/lib -lpng or similar, depending on where you installed the PNG library. Marcelo Cicconet New York University marceloc.net