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@YHaruoka
Created May 3, 2020 14:29
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#include <opencv2/opencv.hpp>
int main() {
// 画像の入力
cv::Mat input_image = cv::imread("input.jpg", 0);
cv::Mat sobel_image, output_image;
/* Sobelフィルタ (3×3)
-1 0 1
-2 0 2
-1 0 1 */
// Sobelフィルタの処理(入力画像,出力画像,出力タイプ,x方向の微分次数,y方向の微分次数,フィルタサイズ)
cv::Sobel(input_image, sobel_image, CV_32F, 1, 0, 3); // x方向の微分フィルタ
// cv::Sobel(input_image, sobel_image, CV_32F, 0, 1, 3); // y方向の微分フィルタ
// convertScaleAbs(=スケーリング後に絶対値を計算し,結果を8ビットに変換)
cv::convertScaleAbs(sobel_image, output_image, 1, 0);
// 閾値以上の場合にエッジ(=白)と見なす(入力画像,出力画像,閾値,最大値,閾値タイプ)
// cv::threshold(output_image, output_image, 64, 255, cv::THRESH_BINARY);
// 画像の保存と表示
cv::imwrite("output.jpg", output_image);
cv::imshow("Sobel_Filter_Result", output_image);
cv::waitKey(0);
return 0;
}
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