From e3bbb80ea6ecdc34c07b0097b95b5bf68676308e Mon Sep 17 00:00:00 2001
From: p3afi4g2n <2990918050@qq.com>
Date: Tue, 3 Dec 2024 18:17:10 +0800
Subject: [PATCH] ADD file via upload

---
 2.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 2.cpp

diff --git a/2.cpp b/2.cpp
new file mode 100644
index 0000000..9510875
--- /dev/null
+++ b/2.cpp
@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <time.h>
+void applyGaussianBlur(float src[5][5], float dst[5][5], int h, int w,float kx[3],float ky[3]){
+	float buf[3][3]={0};
+	#define IDX(n)((n)%3)
+	for(int i=0;i<2;++i){
+		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];
+		}
+	}
+	for(int i=1;i<h-1;++i){
+		for(int j=1;j<w-1;++j){
+			buf[IDX(i+1)][j]=src[i+1][j-1]*kx[0]+src[i+1][j]*kx[1]+src[i+1][j+1]*kx[2];
+		}
+		for(int j=1;j<w-1;++j){
+			dst[i][j]=buf[IDX(i-1)][j]*ky[0]+buf[IDX(i+1)][j]*ky[1]+buf[IDX(i+1)][j]*ky[2];
+		}
+	}
+}
+int main() {
+    float input[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 kx[3]={0.25,0.5,0.25};
+    float ky[3]={0.25,0.5,0.25};
+    float dst[5][5];
+    clock_t start_time = clock();
+    applyGaussianBlur(input,dst,5,5,kx,ky);
+    clock_t end_time = clock();
+    double time_taken = (double)(end_time - start_time) / CLOCKS_PER_SEC;
+    printf("Gaussian Blur applied to the image matrix:\n");
+    for (int i = 0; i < 5; i++) {
+        for (int j = 0; j <5; j++) {
+            printf("%.2f ", dst[i][j]);
+        }
+        printf("\n");
+    }
+    printf("Time taken: %f seconds\n", time_taken);
+    return 0;
+}
+