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Kernel Argument Object Factories

These factory functions allow to create argument objects for 1D and 2D convolution kernel analogously to Argument Object Factories for images.

kernel1d()

Pass a vigra::Kernel1D to a 1D or separable convolution algorithm.

These factories can be used to create argument objects when we are given instances or subclasses of vigra::Kernel1D (analogous to the Argument Object Factories for images). These factory functions access kernel.center(), kernel.left(), kernel.right(), kernel.accessor(), and kernel.borderTreatment() to obtain the necessary information. The following factory functions are provided:

vigra::Kernel1D<SomeType> kernel;

kernel1d(kernel)

create argument object from information provided by kernel

kernel1d(kernel, vigra::BORDER_TREATMENT_CLIP)

create argument object from information provided by kernel, but use given border treatment mode

kernel1d(kerneliterator, kernelaccessor,
kernelleft, kernelright,
vigra::BORDER_TREATMENT_CLIP)

create argument object from explicitly given iterator (pointing to the center of th kernel), accessor, left and right boundaries, and border treatment mode

For usage examples see one-dimensional and separable convolution functions.

kernel2d()

Pass a vigra::Kernel2D to a 2D (non-separable) convolution algorithm.

These factories can be used to create argument objects when we are given instances or subclasses of vigra::Kernel2D (analogous to the Argument Object Factories for images). These factory functions access kernel.center(), kernel.upperLeft(), kernel.lowerRight(), kernel.accessor(), and kernel.borderTreatment() to obtain the necessary information. The following factory functions are provided:

vigra::Kernel2D<SomeType> kernel;

kernel2d(kernel)

create argument object from information provided by kernel

kernel2d(kernel, vigra::BORDER_TREATMENT_CLIP)

create argument object from information provided by kernel, but use given border treatment mode

kernel2d(kerneliterator, kernelaccessor, upperleft, lowerright, vigra::BORDER_TREATMENT_CLIP)

create argument object from explicitly given iterator (pointing to the center of th kernel), accessor, upper left and lower right corners, and border treatment mode

For usage examples see two-dimensional convolution functions.

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

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VIGRA 1.6.0 (5 Nov 2009)