C语言实现Radon变换的基本步骤如下:
以下是一个简单的C语言实现示例:
#include <stdio.h>
#include <math.h>
#define WIDTH 256
#define HEIGHT 256
#define ANGLE_RANGE 180
// Radon Transform function
void radon_transform(int input[WIDTH][HEIGHT], int output[ANGLE_RANGE][HEIGHT]) {
int angle;
int x, y, d;
int projection_length;
// Loop through each projection angle
for (angle = 0; angle < ANGLE_RANGE; angle++) {
// Calculate projection length
projection_length = (int) ceil(sqrt(WIDTH * WIDTH + HEIGHT * HEIGHT));
// Loop through each pixel position
for (d = 0; d < projection_length; d++) {
// Calculate x and y coordinates based on projection angle and distance
x = d * cos(angle * M_PI / 180);
y = d * sin(angle * M_PI / 180);
// Check if the coordinates are within the image boundaries
if (x >= 0 && x < WIDTH && y >= 0 && y < HEIGHT) {
// Calculate projection intensity and update output array
output[angle][d] += input[x][y];
}
}
}
}
int main() {
int input[WIDTH][HEIGHT]; // Input image
int output[ANGLE_RANGE][HEIGHT] = {0}; // Radon transform output
// Read input image from file or initialize with values
// Perform Radon transform
radon_transform(input, output);
// Print Radon transform result or save to file
return 0;
}
请注意,此示例代码仅演示了Radon变换的基本实现方法,并未包含完整的输入/输出部分。您需要根据实际需求,自行完成输入图像的读取或初始化,以及Radon变换结果的输出或保存等操作。