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fl::FiniteDifferenceX Class Reference

#include <convolve.h>

Inheritance diagram for fl::FiniteDifferenceX:

List of all members.

Public Methods
virtual Image	filter (const Image &image)
	This could be const, but it is useful to allow filters to collect statistics. Note that such filters are not thread safe.

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Detailed Description

Similar to convolving with the kernel [1,0,-1], but written to run more efficiently than the general ConvolutionDiscrete1D. Handles borders with a modified form of the kernel: [1,-1]*2. In general, the entire result is effectively scaled by 2, since we avoid the extra division in the (much more repetitive) non-border case, and instead multiply by 2 in border case.

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Member Function Documentation

Image FiniteDifferenceX::filter (  const Image &    image )  [virtual]

This could be const, but it is useful to allow filters to collect statistics. Note that such filters are not thread safe. Implements fl::Filter.

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The documentation for this class was generated from the following files:

• convolve.h
• FiniteDifference.cc

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