opencv-线性滤波器filer2D

#include "opencv2/imgproc/imgproc.hpp"#include "opencv2/highgui/highgui.hpp"#include <stdlib.h>#include <stdio.h>using namespace cv;int main ( int argc, char** argv ){  //变量声明  Mat src, dst;  Mat kernel;  Point anchor;  double delta;  int ddepth;  int kernel_size;  char* window_name = "filter2D Demo";  int c;  //加载图像  src = imread( argv[1] );  if( !src.data )    { return -1; }  //创建窗口  namedWindow( window_name, CV_WINDOW_AUTOSIZE );  //为滤波器初始化  anchor = Point( -1, -1 );//anchor点默认位置在处理核窗口中心  delta = 0;               //卷积操作时加在图像每个像素点上的值，默认为0  ddepth = -1;             //负数表示，处理结果图像和原始图像深度一样  // Loop - Will filter the image with different kernel sizes each 0.5 seconds  int ind = 0;  while( true )       {         c = waitKey(500);         // Press 'ESC' to exit the program         if( (char)c == 27 )           { break; }         // Update kernel size for a normalized box filter         kernel_size = 3 + 2*( ind%5 );//保证处理核大小为[3,11]的奇数         kernel = Mat::ones( kernel_size, kernel_size, CV_32F )/ (float)(kernel_size*kernel_size);         //使用滤波器处理         filter2D(src, dst, ddepth , kernel, anchor, delta, BORDER_DEFAULT );         imshow( window_name, dst );         ind++;       }  return 0;}