www.pudn.com > 99273898StereoMatch_1_0.zip > Convolve.h

/////////////////////////////////////////////////////////////////////////// 
// 
// NAME 
//  Convolve.h -- separable and non-separable linear convolution 
// 
// SPECIFICATION 
//  void Convolve(CImageOf src, CImageOf& dst, 
//                CFloatImage kernel, 
//                int decimate, int interpolate); 
// 
//  void ConvolveSeparable(CImageOf src, CImageOf& 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  
void Convolve(CImageOf src, CImageOf& dst, 
              CFloatImage kernel, 
              float scale, float offset); 
 
 
template  
void ConvolveSeparable(CImageOf src, CImageOf& 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;