ch07 filter

#python code

import cv2
import numpy as np

def filter_embossing():
    src = cv2.imread("D:\\projects\\SampleCode\\006939-master\\ch07\\blurring\\rose.bmp", cv2.IMREAD_GRAYSCALE)

    if src is None:
        print("Image load failed!")
        return

    data = np.array([[-1, -1, 0],
                     [-1,  0, 1],
                     [ 0,  1, 1]], dtype=np.float32)

    dst = cv2.filter2D(src, -1, data, delta=128)

    cv2.imshow("src", src)
    cv2.imshow("dst", dst)

    cv2.waitKey(0)
    cv2.destroyAllWindows()

def main():
    filter_embossing()

if __name__ == "__main__":
    main()

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// C++ code

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

using namespace cv;
using namespace std;

void filter_embossing();

int main(void)
{
	filter_embossing();

	return 0;
}

void filter_embossing()
{
	Mat src = imread("rose.bmp", IMREAD_GRAYSCALE);

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

	float data[] = { -1, -1, 0, -1, 0, 1, 0, 1, 1 };
	Mat emboss(3, 3, CV_32FC1, data);

	Mat dst;
	filter2D(src, dst, -1, emboss, Point(-1, -1), 128);

	imshow("src", src);
	imshow("dst", dst);

	waitKey();
	destroyAllWindows();
}

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

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