From f93d42c58ab15632a13be9d309b3c9ad8a6dbfcc Mon Sep 17 00:00:00 2001
From: pv3e4i5aj <lanjinzi@qq.com>
Date: Sat, 7 Dec 2024 02:44:14 +0800
Subject: [PATCH] Add task1.cpp

---
 task1.cpp | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 task1.cpp

diff --git a/task1.cpp b/task1.cpp
new file mode 100644
index 0000000..ee4eecb
--- /dev/null
+++ b/task1.cpp
@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <ctime>
+#include <stdlib.h>
+
+#define H 5
+#define W 5
+void applyGaussianBlur(float src[H][W], float dst[H][W], int h, int w, float kernel[3][3])
+{
+    for(int i=1;i<h-1;++i)
+    {
+        for (int j = 1; j< w - 1; ++j)
+        {
+            dst[i][j] =
+                    src[i - 1][j - 1] * kernel[0][0] + src[i - 1][j] * kernel[0][1] + src[i - 1][j + 1] * kernel[0][2]+
+                    src[i][j - 1] * kernel[1][0] + src[i][j]* kernel[1][1] + src[i][j + 1] * kernel[1][2] +
+                    src[i + 1][j - 1] * kernel[2][0] + src[i + 1][j] * kernel[2][1] + src[i + 1][j + 1] * kernel[2][2];
+        }
+    }
+}
+
+int main()
+{
+    float inputImage[H][W]=
+    {
+        {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 kernel[3][3]=
+    {
+        {1.0f/16,2.0f/16,1.0f/16},
+        {2.0f/16,4.0f/16,2.0f/16},
+        {1.0f/16,2.0f/16,1.0f/16}
+    };
+
+     float dst[H][W]=
+    {
+        {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}
+    };
+
+    clock_t start = clock();
+    applyGaussianBlur(inputImage, dst, H,W, kernel);
+    clock_t end = clock();
+    double time_spent = double(end - start) / CLOCKS_PER_SEC;
+    printf("运行时间：%lf秒\n不考虑边界，dst矩阵结果为\n",time_spent);
+    for(int i=0;i<H;i++)
+    {
+        for(int j=0;j<W;j++)
+        {
+            printf("%f ",dst[i][j]);
+        }
+        printf("\n");
+    }
+
+}
+