给我霍夫变换C语言代码
时间: 2023-12-02 11:55:52 浏览: 14
以下是一段霍夫变换的 C 语言代码:
```c
#include <stdio.h>
#include <math.h>
#define WIDTH 100
#define HEIGHT 100
#define MAX_RHO 141
#define MAX_THETA 180
#define THETA_STEP M_PI/180
int main()
{
int x, y, i, j, max = 0;
int accum[MAX_RHO][MAX_THETA] = {0};
int image[HEIGHT][WIDTH] = {
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
};
for (y = 0; y < HEIGHT; y++) {
for (x = 0; x < WIDTH; x++) {
if (x >= y) {
image[y][x] = 255;
}
}
}
for (y = 0; y < HEIGHT; y++) {
for (x = 0; x < WIDTH; x++) {
if (image[y][x]) {
for (i = 0; i < MAX_THETA; i++) {
double theta = THETA_STEP * i;
double rho = x * cos(theta) + y * sin(theta);
int rhoIndex = rho + MAX_RHO / 2;
accum[rhoIndex][i]++;
if (accum[rhoIndex][i] > max) {
max = accum[rhoIndex][i];
}
}
}
}
}
printf("P2\n%d %d\n%d\n", MAX_RHO, MAX_THETA, max);
for (i = 0; i < MAX_RHO; i++) {
for (j = 0; j < MAX_THETA; j++) {
printf("%d ", accum[i][j]);
}
printf("\n");
}
return 0;
}
```
这是一个简单的霍夫变换实现,输入是一个二维数组的图片,输出是一张霍夫变换后的图。感兴趣的话,你可以自己修改这份代码,尝试不同的图片和参数,来探究霍夫变换的原理和实现。