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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;
}

opencv-线性滤波器filer2D_2d


opencv-线性滤波器filer2D_2d_02


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