水波效果

来源：互联网发布：苹果淘宝旗舰店编辑：程序博客网时间：2024/04/27 19:35

<span style="font-family: Arial, Helvetica, sans-serif;">#include<opencv2\opencv.hpp></span>

#include<iostream>using namespace cv;using namespace std;#define PI 3.1415926Mat waterDeal(const Mat &img);int main() {Mat img = imread("D://图片//1.png");if (img.empty())return -1;Mat result = waterDeal(img);imshow("result", result);waitKey(0);destroyAllWindows;return 0;}Mat waterDeal(const Mat & img){Mat result = img.clone();if (result.type() != CV_8UC3)result.convertTo(result, CV_8UC3);float x_tem, y_tem, x_start, y_start, new_x, new_y;float  tem1, tem2, r_tem, r_res;float theta;float num1 = 2, num2 = 4;       //num1越小深度越小，num2越大圈数越多Point center(img.cols / 5, img.rows / 2);   //水波的中心for (int i = 0; i < img.rows; i++) {for (int j = 0; j < img.cols; j++) {x_start = j - center.x;y_start = center.y - i;theta = atan(y_start / (x_start + 0.00001));     //变换关系if (x_start < 0)theta += PI;r_tem = sqrt(x_start*x_start + y_start*y_start);       //每圈的半径r_res = r_tem + img.cols*0.01*num1*sin(num2*0.1*r_tem);    //r_res = r_tem + img.cols*0.01*num1*sin(num2*r_tem);new_x = center.x + r_res*cos(theta);  new_y = center.y - r_res*sin(theta);    //使图像正立if (new_x < 0)new_x = 0;if (new_x > img.cols - 2)new_x = img.cols - 2;if (new_y < 0)new_y = 0;if (new_y > img.rows - 2)new_y = img.rows - 2;x_tem = (int)new_x;y_tem = (int)new_y;tem1 = new_x - x_tem;tem2 = new_y - y_tem;for (int k = 0; k < 3; k++) {   //联系邻域处理中心像素result.at<Vec3b>(i, j)[k] = (1 - tem1)*(1 - tem2)*img.at<Vec3b>(y_tem, x_tem)[k] + (tem1)*(tem2)*img.at<Vec3b>(y_tem + 1, x_tem + 1)[k] + (1 - tem1)*(tem2)*img.at<Vec3b>(y_tem + 1, x_tem)[k] + (tem1)*(1 - tem2)*img.at<Vec3b>(y_tem, x_tem + 1)[k];}}}return result;}

效果：

昨天看到的时候觉得好惊喜，就自己记录下来了，方便以后的查阅

作者还有好多厉害的文章，链接：http://m.blog.csdn.net/blog/index?username=shinian1987

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