用c++实现单尺度二维离散小波对图像分解,并展现示例代码

好的，以下是使用C语言实现二维数组的小波对图像进行分解，并展示示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define ROWS 512
#define COLS 512

// 一维小波变换
void wavelet_transform(float *data, int n) {
    int i;
    float c, c_inv, c_h, c_l, *temp;

    temp = (float*)malloc(n * sizeof(float));
    c = sqrt(2.0);
    c_inv = 1.0 / c;
    c_h = c_inv;
    c_l = c * 0.5;

    for (i = 0; i < n; i += 2) {
        temp[i / 2] = (data[i] + data[i + 1]) * c_h;
        temp[n / 2 + i / 2] = (data[i] - data[i + 1]) * c_l;
    }

    for (i = 0; i < n; i++) {
        data[i] = temp[i];
    }

    free(temp);
}

// 二维小波变换
void wavelet_transform_2d(float **image, int rows, int cols, int level) {
    int i, j, k;
    float *temp_row, *temp_col;

    temp_row = (float*)malloc(cols * sizeof(float));
    temp_col = (float*)malloc(rows * sizeof(float));

    for (k = 0; k < level; k++) {
        for (i = 0; i < rows; i++) {
            for (j = 0; j < cols; j++) {
                temp_row[j] = image[i][j];
            }
            wavelet_transform(temp_row, cols);
            for (j = 0; j < cols; j++) {
                image[i][j] = temp_row[j];
            }
        }

        for (j = 0; j < cols; j++) {
            for (i = 0; i < rows; i++) {
                temp_col[i] = image[i][j];
            }
            wavelet_transform(temp_col, rows);
            for (i = 0; i < rows; i++) {
                image[i][j] = temp_col[i];
            }
        }

        rows /= 2;
        cols /= 2;
    }

    free(temp_row);
    free(temp_col);
}

// 读取图像
void read_image(float **image, char *filename, int rows, int cols) {
    int i, j;
    FILE *fp;
    fp = fopen(filename, "rb");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            fread(&image[i][j], sizeof(float), 1, fp);
        }
    }
    fclose(fp);
}

// 保存图像
void save_image(float **image, char *filename, int rows, int cols) {
    int i, j;
    FILE *fp;
    fp = fopen(filename, "wb");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            fwrite(&image[i][j], sizeof(float), 1, fp);
        }
    }
    fclose(fp);
}

// 打印图像
void print_image(float **image, int rows, int cols) {
    int i, j;
    for (i