渐进式不规则三角网滤波代码c++

以下是一个简单的 c++ 代码示例，用于执行渐进式不规则三角网滤波：

#include <iostream>
#include <vector>
#include <cmath>

using namespace std;

vector<vector<double>> progressive_irregular_triangle_filter(vector<vector<double>> input, double threshold) {
    int rows = input.size();
    int cols = input[0].size();
    vector<vector<double>> output(rows, vector<double>(cols));

    for (int i = 1; i < rows - 1; i++) {
        for (int j = 1; j < cols - 1; j++) {
            double sum = 0.0;
            double count = 0.0;

            for (int x = -1; x <= 1; x++) {
                for (int y = -1; y <= 1; y++) {
                    if (abs(input[i][j] - input[i + x][j + y]) >= threshold) {
                        sum += input[i + x][j + y];
                        count++;
                    }
                }
            }

            if (count != 0) {
                output[i][j] = sum / count;
            } else {
                output[i][j] = input[i][j];
            }
        }
    }

    return output;
}

int main() {
    int rows = 5;
    int cols = 5;
    double threshold = 0.5;
    vector<vector<double>> input(rows, vector<double>(cols));

    // 填充输入数据
    input[0] = {1.0, 2.0, 3.0, 4.0, 5.0};
    input[1] = {6.0, 7.0, 8.0, 9.0, 10.0};
    input[2] = {11.0, 12.0, 13.0, 14.0, 15.0};
    input[3] = {16.0, 17.0, 18.0, 19.0, 20.0};
    input[4] = {21.0, 22.0, 23.0, 24.0, 25.0};

    vector<vector<double>> output = progressive_irregular_triangle_filter(input, threshold);

    // 输出结果
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            cout << output[i][j] << " ";
        }
        cout << endl;
    }

    return 0;
}

此代码使用渐进式不规则三角网滤波算法，对输入数据进行滤波处理，并返回输出结果。在输入数据的每个元素与其周围元素的差值超过阈值时，该元素将被替换为其周围元素的平均值。如果周围元素的数量为零，则该元素不进行滤波处理。