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complex_2.c

@@ -0,0 +1,53 @@
+#include<stdio.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[3][5] = { 0 };
+	for (int i = 1; i < h - 1; i++)
+	{
+		for (int j = 1; i < h - 1; i++)
+		{
+			for (int j = 0; j < w; j++)
+			{
+				if (j == 0 || j == 1 || j == 2)
+				{
+					buf[j][i] = src[i - 1][j] * kx[0] + src[i][j] * kx[1] + src[i + 1][j] * kx[2];
+				}
+			}
+		}
+		if (i >= 1)
+		{
+			for (int j = 1; j < w - 1; j++)
+			{
+				float sum = 0;
+				for (int k = 0; k < 3; k++)
+				{
+					sum += buf[k][j] * ky[k];
+				}
+				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 };
+	float kx[3]= { 1 / 16.0, 2 / 16.0, 1 / 16.0 };
+	float ky[3]= { 1 / 16.0, 2 / 16.0, 1 / 16.0 };
+	clock_t start = clock();
+	applySeparableGaussianBlur (src,dst, 5, 5, kx,ky);
+	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:%f 秒\n", time_taken);
+	return 0;
+}