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//
// NAME
// Convolve.h -- separable and non-separable linear convolution
//
// SPECIFICATION
// void Convolve(CImageOf<T> src, CImageOf<T>& dst,
// CFloatImage kernel,
// int decimate, int interpolate);
//
// void ConvolveSeparable(CImageOf<T> src, CImageOf<T>& dst,
// CFloatImage xKernel, CFloatImage yKernel,
// int decimate, int interpolate);
//
// PARAMETERS
// src source image
// dst destination image
// kernel 2-D convolution kernel
// xKernel, yKernel 1-D convolution kernels (1-row images)
// decimate decimation factor (1 = none, 2 = half, ...)
// interpolate interpolation factor (1 = none, 2 = double, ...)
//
// DESCRIPTION
// Perform a 2D or separable 1D convolution. The convolution kernels
// are supplied as 2D floating point images (1 row images for the separable
// kernels). The position of the "0" pixel in the kernel is determined
// by the kernel.origin[] parameters, which specify the offset (coordinate,
// usually negative) of the first (top-left) pixel in the kernel.
//
// Because a temporary row buffer is used for row padding and separable
// convolution intermediaries, the src and dst images can be the same
// (in place convolution), so long as decimation = interpolation = 1.
//
// If dst is not of the right shape, it is reallocated to the right shape.
//
// The padding type of src (src.borderMode) determines how pixels are
// filled for convolutions.
//
// SEE ALSO
// Convolve.cpp implementation
// Image.h image class definition
//
// Copyright � Richard Szeliski, 2001.
// See Copyright.h for more details
//
///////////////////////////////////////////////////////////////////////////
template <class T>
void Convolve(CImageOf<T> src, CImageOf<T>& dst,
CFloatImage kernel,
float scale, float offset);
template <class T>
void ConvolveSeparable(CImageOf<T> src, CImageOf<T>& dst,
CFloatImage x_kernel, CFloatImage y_kernel,
float scale, float offset,
int decimate, int interpolate);
extern CFloatImage ConvolveKernel_121;
extern CFloatImage ConvolveKernel_14641;
extern CFloatImage ConvolveKernel_8TapLowPass;
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