单一矩阵的运算

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  1. //运行参数:girl.jpg
  2. #pragma comment(lib,"highgui.lib")
  3. #pragma comment(lib,"cxcore.lib")
  4. #pragma comment(lib,"cv.lib")
  5. #pragma comment(lib,"ml.lib")
  6. #pragma comment(lib,"cvaux.lib")
  7. #pragma comment(lib,"cvcam.lib")
  8.  
  9. #include "cv.h"
  10. #include "highgui.h"
  11. #include <stdio.h>
  12.  
  13. inline void cvDoubleMatPrint( const CvMat* mat );
  14. inline void cvDoubleMatSet( CvMat* mat,double v );
  15. inline void cvDoubleMatSet( CvMat* mat);
  16. inline void cvScalarPrint(const CvScalar& s);
  17.  
  18. int main( int argc,char** argv )
  19. {
  20. IplImage* pImg; //声明IplImage指针
  21.  
  22. if( argc == 2 && (pImg = cvLoadImage( argv[1],CV_LOAD_IMAGE_UNCHANGED)) != 0 )
  23. {
  24.  
  25. // 单一矩阵的运算:
  26. CvMat *Ma,*Mb;
  27. Ma=cvCreateMat(4,4,CV_32FC1);
  28. Mb=cvCreateMat(4,CV_32FC1);
  29. //cvDoubleMatSet(Ma);
  30. cvSetIdentity(Ma);
  31.  
  32. cvTranspose(Ma,Mb); // 转置:transpose(Ma) -> Mb (注意转置阵不能返回给Ma本身)
  33. cvDoubleMatPrint(Ma);
  34. printf("转置后=====================\n");
  35. cvDoubleMatPrint(Mb);
  36.  
  37. printf("迹:=====================\n");
  38. CvScalar t = cvTrace(Ma); // 迹:trace(Ma) -> t.val[0]
  39. cvScalarPrint(t);
  40.  
  41. double d = cvDet(Ma); // 行列式:det(Ma) -> d
  42. printf("行列式:%lf=====================\n",d);
  43.  
  44. cvInvert(Ma,Mb); // 逆矩阵:inv(Ma) -> Mb
  45. printf("逆矩阵=====================\n");
  46. cvDoubleMatPrint(Mb);
  47.  
  48. cvNamedWindow( "Image",1 ); // 创建窗口
  49. cvShowImage( "Image",pImg ); // 显示图像
  50. cvWaitKey(0); // 等待按键
  51.  
  52. cvReleaseMat(&Ma);
  53. cvReleaseMat(&Mb);
  54.  
  55. cvDestroyWindow( "Image" ); // 销毁窗口
  56. cvReleaseImage( &pImg ); // 释放图像
  57.  
  58. return 0;
  59. }
  60.  
  61. return -1;
  62. }
  63.  
  64. inline void cvDoubleMatPrint( const CvMat* mat )
  65. {
  66. int i,j;
  67. for( i = 0; i < mat->rows; i++ )
  68. {
  69. for( j = 0; j < mat->cols; j++ )
  70. {
  71. printf( "%lf ",cvmGet( mat,i,j ) );
  72. }
  73. printf( "\n" );
  74. }
  75. }
  76.  
  77. inline void cvDoubleMatSet( CvMat* mat,double v )
  78. {
  79. int i,j;
  80. for( i = 0; i < mat->rows; i++ )
  81. {
  82. for( j = 0; j < mat->cols; j++ )
  83. {
  84. cvmSet( mat,j,v);
  85. }
  86. }
  87. }
  88.  
  89. inline void cvDoubleMatSet( CvMat* mat)
  90. {
  91. int i,j;
  92. double v;
  93. for( i = 0; i < mat->rows; i++ )
  94. {
  95. for( j = 0; j < mat->cols; j++ )
  96. {
  97. v=i*10+j;
  98. cvmSet( mat,v);
  99. }
  100. }
  101. }
  102.  
  103. inline void cvScalarPrint(const CvScalar& s)
  104. {
  105. printf("\n%f %f %f %f\n",s.val[0],s.val[1],s.val[2],s.val[3]);
  106. //CvScalar t = cvTrace(Ma); // 迹:trace(Ma) -> t.val[0]
  107. }

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