Python 邊緣偵測FindContour

markdown #說明 這裡是使用 Opencv 的套件 findcontour 做邊緣偵測等辨識。 - 參考 : https://gogoprivateryan.blogspot.com/2015/08/opencv-2-opencv-python.html #操作流程 ##Code ``` import numpy as np import cv2 im = cv2.imread('t.png') imgray = cv2.cvtColor(im, cv2.COLOR_BGR2GRAY) ret, thresh = cv2.threshold(imgray, 127, 255, 0) contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE) print("there are " + str(len(contours)) + " contours") cnt = contours[0] print("there are " + str(len(cnt)) + " points in contours[0]") print(cnt) cnt = contours[1] print("there are " + str(len(cnt)) + " points in contours[1]") print(cnt) cv2.namedWindow('im', cv2.WINDOW_NORMAL) cv2.resizeWindow("im", 640, 480) cv2.imshow('im', im) cv2.waitKey(0) cv2.destroyAllWindows() ``` ##DEMO 原圖

計算的邊緣點