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

/////////////////////////////////////////////////////////////////////////// 
// 
// NAME 
//  Convert.h -- convert between image types, copy images, select bands 
// 
// DESCRIPTION 
//  This file defines a number of conversion/copying utilities: 
// 
//  void ScaleAndOffset(CImageOf& src, CImageOf& dst, 
//                       float scale, float offset); 
//      -- scale and offset one image into another (optionally convert type) 
// 
//  void CopyPixels(CImageOf& src, CImageOf& dst); 
//      -- convert pixel types or just copy pixels from src to dst 
// 
//  CImageOf ConvertToRGBA(CImageOf src); 
//      -- convert from gray (1-band) image to RGBA (alpha == 255) 
// 
//  CImageOf ConvertToGray(CImageOf src); 
//      -- convert from RGBA (4-band) image to gray, using Y formula, 
//          Y = 0.212671 * R + 0.715160 * G + 0.072169 * B 
// 
//  void BandSelect(CImageOf& src, CImageOf& dst, int sBand, int dBand); 
//      -- copy the sBand from src into the dBand in dst 
// 
//  The ScaleAndOffset and CopyPixels routines will reallocate dst if it 
//  doesn't conform in shape to src.  So will BandSelect, except that the 
//  number of bands in src and dst is allowed to differ (if dst is 
//  unitialized, it will be set to a 1-band image). 
// 
// PARAMETERS 
//  src                 source image 
//  dst                 destination image 
//  scale               floating point scale value  (1.0 = no change) 
//  offset              floating point offset value (0.0 = no change) 
//  sBand               source band (0...) 
//  dBand               destination band (0...) 
// 
// SEE ALSO 
//  Convert.cpp         implementation 
//  Image.h             image class definition 
// 
// Copyright © Richard Szeliski, 2001. 
// See Copyright.h for more details 
// 
/////////////////////////////////////////////////////////////////////////// 
 
template  
void ScaleAndOffsetLine(T1* src, T2* dst, int n, 
                        float scale, float offset, 
                        T2 minVal, T2 maxVal); 
 
template  
void ScaleAndOffset(CImageOf& src, CImageOf& dst, 
                    float scale, float offset); 
 
template  
void CopyPixels(CImageOf& src, CImageOf& dst) 
{ 
    ScaleAndOffset(src, dst, 1.0f, 0.0f); 
} 
 
template  
CImageOf ConvertToRGBA(CImageOf src); 
 
template  
CImageOf ConvertToGray(CImageOf src); 
 
template  
void BandSelect(CImageOf& src, CImageOf& dst, int sBand, int dBand);