LIE ANALYSIS SYMBOL
OrientationScoreTransform
OrientationScoreTransform[data, ObjOrientationWavelet]
constructs an Orientation Score from data using the supplied ObjOrientationWavelet
OrientationScoreTransform[data, options]
constructs an Orientation Score from data using wavelets constructed with the parameters supplied in options
DetailsDetails
- OrientationScoreTransform internally uses the function CakeWaveletStack or GaborWaveletStack if no ObjOrientationWavelet is supplied.
- The following options can be provided:
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"WaveletSize" 21 the size of the wavelet "Type" "Cake" type of wavelet "Orientations" 12 number of orientations - The following types of wavelets can be used:
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"Cake" Cake Wavelets "Gabor" Orientation Sensitive Gabor Wavelets "MultiScaleCake" Cake Wavelets and Scales - The Orientation Score is constructed according to: , where ψ is the anisotropic kernel oriented along the x-axis which we identify with θ = 0, and where denotes the transformation between image f and orientation score .
- All options from both CakeWaveletStack, GaborWaveletStack and MultiScaleCakeWaveletStack can also be provided. Obviously only the options that are valid for this "Type" are used.
- The default output is an ObjPositionOrientationData. In case a multi scale cake wavelet, constructed using MultiScaleCakeWaveletStack, is used the output is an ObjOrientationScores2D.
- By Applying the Normal function to any output object returns an Association from all elements of that object.
- If possible, the function OrientationScoreTransform makes use of symmetry at the orientation axes to save memory and computation time.
- When an odd number of orientations or the wavelets are directional symmetry can not be used.
- Internally the data is saved as Image to limit the precision to Real32 values.
ExamplesExamplesopen allclose all
Basic Examples (4)Basic Examples (4)
Construct an Orientation Score from an image
Construct an Orientation Score using precomputed GaborWaveletStack
Construct an Orientation Score using precomputed MultiScaleCakeWaveletStack
The ObjPositionOrientationData and ObjScaleOrientationScores2D contain properties and elements. For example if we would like to see the used wavelets, we can get them by using the element wavelets.