ch11 morphology

#python 

import cv2

def erode_dilate():
    src = cv2.imread("D:\\projects\\SampleCode\\006939-master\\ch11\\morphology\\milkdrop.bmp", cv2.IMREAD_GRAYSCALE)
    if src is None:
        print("Image load failed!")
        return

    _, bin = cv2.threshold(src, 0, 255, cv2.THRESH_BINARY | cv2.THRESH_OTSU)

    dst1 = cv2.erode(bin, None)
    dst2 = cv2.dilate(bin, None)

    cv2.imshow("src", src)
    cv2.imshow("bin", bin)
    cv2.imshow("erode", dst1)
    cv2.imshow("dilate", dst2)

    cv2.waitKey(0)
    cv2.destroyAllWindows()

def open_close():
    src = cv2.imread("D:\\projects\\SampleCode\\006939-master\\ch11\\morphology\\milkdrop.bmp", cv2.IMREAD_GRAYSCALE)
    if src is None:
        print("Image load failed!")
        return

    _, bin = cv2.threshold(src, 0, 255, cv2.THRESH_BINARY | cv2.THRESH_OTSU)

    dst1 = cv2.morphologyEx(bin, cv2.MORPH_OPEN, None)
    dst2 = cv2.morphologyEx(bin, cv2.MORPH_CLOSE, None)

    cv2.imshow("src", src)
    cv2.imshow("bin", bin)
    cv2.imshow("opening", dst1)
    cv2.imshow("closing", dst2)

    cv2.waitKey(0)
    cv2.destroyAllWindows()

erode_dilate()
open_close()

---

// C++

#include "opencv2/opencv.hpp"
#include <iostream>

using namespace cv;
using namespace std;

void erode_dilate();
void open_close();

int main(void)
{
	erode_dilate();
	open_close();

	return 0;
}

void erode_dilate()
{
	Mat src = imread("milkdrop.bmp", IMREAD_GRAYSCALE);

	if (src.empty()) {
		cerr << "Image load failed!" << endl;
		return;
	}

	Mat bin;
	threshold(src, bin, 0, 255, THRESH_BINARY | THRESH_OTSU);

	Mat dst1, dst2;
	erode(bin, dst1, Mat());
	dilate(bin, dst2, Mat());

	imshow("src", src);
	imshow("bin", bin);
	imshow("erode", dst1);
	imshow("dilate", dst2);

	waitKey();
	destroyAllWindows();
}

void open_close()
{
	Mat src = imread("milkdrop.bmp", IMREAD_GRAYSCALE);

	if (src.empty()) {
		cerr << "Image load failed!" << endl;
		return;
	}

	Mat bin;
	threshold(src, bin, 0, 255, THRESH_BINARY | THRESH_OTSU);

	Mat dst1, dst2;
	morphologyEx(bin, dst1, MORPH_OPEN, Mat());
	morphologyEx(bin, dst2, MORPH_CLOSE, Mat());

	imshow("src", src);
	imshow("bin", bin);
	imshow("opening", dst1);
	imshow("closing", dst2);

	waitKey();
	destroyAllWindows();
}

C++ Code 출처 : OpenCV 4로 배우는 컴퓨터 비전과 머신 러닝 - 황선규 저

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