From 6a8f85419e7ee504e0972cdc6f8c3cdf1c61d085 Mon Sep 17 00:00:00 2001
From: p8btn9vm4 <349074866@qq.com>
Date: Sun, 1 Dec 2024 17:24:57 +0800
Subject: [PATCH] ADD file via upload

---
 blur_1.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 blur_1.c

diff --git a/blur_1.c b/blur_1.c
new file mode 100644
index 0000000..eaaaaa2
--- /dev/null
+++ b/blur_1.c
@@ -0,0 +1,53 @@
+#include <stdio.h>  
+#include <time.h>  
+
+#define KERNEL_SIZE 3  
+
+float kernel[KERNEL_SIZE][KERNEL_SIZE] = {
+    {1 / 16.0, 2 / 16.0, 1 / 16.0},
+    {2 / 16.0, 4 / 16.0, 2 / 16.0},
+    {1 / 16.0, 2 / 16.0, 1 / 16.0}
+};
+
+void applyGaussianBlur(float src[][5], float dst[][5], int h, int w, float kernel[KERNEL_SIZE][KERNEL_SIZE]) {
+    for (int i = 1; i < h - 1; i++) {  
+        for (int j = 1; j < w - 1; j++) { 
+            float sum = 0.0f;
+            for (int ki = 0; ki < KERNEL_SIZE; ki++) {
+                for (int kj = 0; kj < KERNEL_SIZE; kj++) {
+                    sum += src[i + ki - 1][j + kj - 1] * kernel[ki][kj];
+                }
+            }
+            dst[i][j] = sum;
+        }
+    }
+}
+
+int main() {
+    float src[5][5] = {
+        {1, 2, 3, 4, 5},
+        {6, 7, 8, 9, 10},
+        {11, 12, 13, 14, 15},
+        {16, 17, 18, 19, 20},
+        {21, 22, 23, 24, 25}
+    };
+
+    float dst[5][5] = { 0 }; 
+
+    clock_t start = clock();  
+    applyGaussianBlur(src, dst, 5, 5, kernel);
+    clock_t end = clock();  
+
+    printf("模糊后的图像矩阵:\n");
+    for (int i = 0; i < 5; i++) {
+        for (int j = 0; j < 5; j++) {
+            printf("%.2f ", dst[i][j]);
+        }
+        printf("\n");
+    }
+
+    double time_taken = (double)(end - start) / CLOCKS_PER_SEC;
+    printf("运行时间: %e 秒\n", time_taken);
+
+    return 0;
+}
\ No newline at end of file