From 8c9e763b22832afc2818aa3eadee05185daa76e2 Mon Sep 17 00:00:00 2001
From: p7cx2jokr <2160925370@qq.com>
Date: Sat, 30 Nov 2024 23:22:54 +0800
Subject: [PATCH] ADD file via upload

---
 2.cpp | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 2.cpp

diff --git a/2.cpp b/2.cpp
new file mode 100644
index 0000000..242eb0b
--- /dev/null
+++ b/2.cpp
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <math.h>
+#include <time.h>
+
+void applySeparableGaussianBlur(float src[5][5], float dst[5][5], int h, int w, float kx[3], float ky[3]) {
+    float buf[5][5] = {0};
+    
+	//开始进行可分离卷积 
+    for (int i = 1; i < h - 1; i++) {
+    	// 计算当前行的行内卷积 
+        for (int j = 1; j < w - 1; j++) {
+            buf[i][j] = src[i][j-1]*kx[0] + src[i][j]*kx[1] + src[i][j+1]*kx[2];
+        }
+    }
+	
+	// 进行行间的卷积得到最终像素值 
+    for (int i = 1; i < h - 1; i++) {
+        for (int j = 1; j < w - 1; j++) {
+            dst[i][j] = buf[i-1][j]*ky[0] + buf[i][j]*ky[1] + buf[i+1][j]*ky[2];
+        }
+    }
+}
+
+int main() {
+    float src[5][5] = {
+        {0, 0, 0, 0, 0},
+        {0, 1, 2, 3, 0},
+        {0, 4, 5, 6, 0},
+        {0, 7, 8, 9, 0},
+        {0, 0, 0, 0, 0}
+    };
+    float dst[5][5] = {0};
+    float kx[3] = {0.25, 0.5, 0.25};
+    float ky[3] = {0.25, 0.5, 0.25};
+	
+
+    clock_t start = clock();
+    applySeparableGaussianBlur(src, dst, 5, 5, kx, ky);
+    clock_t end = clock();
+
+    printf("矩阵结果：\n");
+    for (int i = 0; i < 5; i++) {
+        for (int j = 0; j < 5; j++) {
+            printf("%.2f ", dst[i][j]);
+        }
+        printf("\n");
+    }
+    printf("步骤2运行时间：%f秒\n", (double)(end - start) / CLOCKS_PER_SEC);
+
+    return 0;
+}