TWindowedSincKernel

Hierarchy

TPersistent

   |

TCustomKernel

Description

Returns the value of the Sinc function constrained by a window function. Descendant classes override the Window method in order to implement a custom window function.

h(x) = Sinc(x) * Window(x);

Windowed Sinc filters are known for producing high quality resampled images. Ideal resampling corresponds to filtering an image with the ideal low-pass filter (i.e. a Sinc filter). This is computionally expensive, since the Sinc function has infinite extent. Hence a window function is used to constrain the filter.

See topic about Sampling and Rasterization for further information.

Reference

Fields Properties Methods
In TWindowedSincKernel:
Width Create
Filter
GetWidth
SetWidth
In TCustomKernel:
Observer Changed
RangeCheck

See Also

Kernel Example, Resampler Example, Sampling and Rasterization