updated code

CenterofBlob/README.md

@@ -0,0 +1,27 @@
+## Center of Blob using Python and C++
+
+To run the code to find center of a single blob, run the following commands:-
+
+For python:-
+
+`python3 single_blob.py --ipimage image_name`
+
+
+For C++:-
+
+1. ``g++ single_blob.cpp `pkg-config opencv --cflags --libs` -o output``
+
+2. `./output image_name`
+
+To run the code to find center of multiple blobs, run the following commands:-
+
+For python:-
+
+`python3 center_of_multiple_blob.py --ipimage image_name`
+
+For C++:-
+
+1. ``g++ center_of_multiple_blob.cpp `pkg-config opencv --cflags --libs` -o output``
+
+2. `./output image_name`
+

CenterofBlob/single_blob.cpp

@@ -1,20 +1,35 @@
-// declare Mat variables, thr, gray and src
-Mat thr, gray, src;
-
-// convert image to grayscale
-cvtColor( src, gray, COLOR_BGR2GRAY );
-
-// convert grayscale to binary image
-threshold( gray, thr, 100,255,THRESH_BINARY );
-
-// find moments of the image
-Moments m = moments(thr,true);
-Point p(m.m10/m.m00, m.m01/m.m00);
-
-// coordinates of centroid
-cout<< Mat(p)<< endl;
-
-// show the image with a point mark at the centroid
-circle(src, p, 5, Scalar(128,0,0), -1);
-imshow("Image with center",src);
-waitKey(0);
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/imgproc/imgproc.hpp"
+#include <iostream>
+#include <stdio.h>
+#include <stdlib.h>
+
+using namespace cv;
+using namespace std;
+
+int main(int argc, char** argv)
+{
+    // Declare Mat type images
+    Mat src, gray,thr;
+
+    //Load source image, convert it to gray
+    src = imread(argv[1], 1 );
+
+	// convert image to grayscale
+	cvtColor( src, gray, COLOR_BGR2GRAY );
+
+	// convert grayscale to binary image
+	threshold( gray, thr, 100,255,THRESH_BINARY );
+
+	// find moments of the image
+	Moments m = moments(thr,true);
+	Point p(m.m10/m.m00, m.m01/m.m00);
+
+	// coordinates of centroid
+	cout<< Mat(p)<< endl;
+
+	// show the image with a point mark at the centroid
+	circle(src, p, 5, Scalar(128,0,0), -1);
+	imshow("Image with center",src);
+	waitKey(0);
+}

CenterofBlob/single_blob.py

@@ -1,3 +1,16 @@
+import cv2
+import numpy as np
+import argparse
+
+# create object to pass argument
+arg_parse = argparse.ArgumentParser()
+arg_parse.add_argument("-i", "--ipimage", required=True,
+	help="input image path")
+args = vars(arg_parse.parse_args())
+
+# read image through command line 
+img = cv2.imread(args["ipimage"])
+
 # convert image to grayscale image
 gray_image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
 
@@ -17,4 +30,4 @@
 
 # display the image
 cv2.imshow("Image", img)
-cv2.waitKey(0)
+cv2.waitKey(0)