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#include <stdio.h>
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#include <math.h>
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#include <time.h>
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void applyGaussianBlur(float src[5][5], float dst[5][5], int h, int w, float kernel[3][3]) {
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for (int i = 1; i < h - 1; i++) {
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for (int j = 1; j < w - 1; j++) {
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dst[i][j] = 0;
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for (int ki = -1; ki <= 1; ki++) {
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for (int kj = -1; kj <= 1; kj++) {
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dst[i][j] += src[i + ki][j + kj] * kernel[1 + ki][1 + kj];
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}
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}
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}
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}
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}
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int main() {
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float src[5][5] = {
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{0, 0, 0, 0, 0},
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{0, 1, 2, 3, 0},
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{0, 4, 5, 6, 0},
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{0, 7, 8, 9, 0},
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{0, 0, 0, 0, 0}
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};
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float dst[5][5] = {0};
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float kernel[3][3] = {
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{1.0/16, 2.0/16, 1.0/16},
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{2.0/16, 4.0/16, 2.0/16},
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{1.0/16, 2.0/16, 1.0/16}
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};
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clock_t start = clock();
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applyGaussianBlur(src, dst, 5, 5, kernel);
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clock_t end = clock();
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printf("矩阵结果:\n");
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for (int i = 0; i < 5; i++) {
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for (int j = 0; j < 5; j++) {
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printf("%.2f ", dst[i][j]);
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}
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printf("\n");
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}
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printf("步骤1运行时间:%f秒\n", (double)(end - start) / CLOCKS_PER_SEC);
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return 0;
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}
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