Object Detection By Contours

Author: keshavsingh4522

Linkedin/Opencv/contours/detect_blob.png

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+# objeect detection
+import cv2
+img=cv2.imread('detect_blob.png')
+cv2.imshow('Original colored',img)
+gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
+cv2.imshow('Original Gray',gray)
+
+
+thresh=cv2.adaptiveThreshold(gray,255,cv2.ADAPTIVE_THRESH_GAUSSIAN_C,cv2.THRESH_BINARY,115,1)
+cv2.imshow('Thresh',thresh)
+
+_,contours,hierarchy=cv2.findContours(thresh,cv2.RETR_TREE,cv2.CHAIN_APPROX_SIMPLE)
+img2=img.copy()
+index=-1
+thickness=5
+color=(255,0,255)
+cv2.drawContours(img2,contours,index,color,thickness)
+cv2.imshow('Contours',img2)
+
+cv2.waitKey(0)
+cv2.destroyAllWindows()