图像形态学操作图像形态学操作

形态学-腐蚀操作

img = cv2.imread('dige.png')cv2.imshow('img', img) cv2.waitKey(0) cv2.destroyAllWindows()

【图像形态学操作】

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kernel = np.ones((3,3),np.uint8) erosion = cv2.erode(img,kernel,iterations = 1)cv2.imshow('erosion', erosion) cv2.waitKey(0) cv2.destroyAllWindows()

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pie = cv2.imread('pie.png')cv2.imshow('pie', pie) cv2.waitKey(0) cv2.destroyAllWindows()

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kernel = np.ones((30,30),np.uint8) erosion_1 = cv2.erode(pie,kernel,iterations = 1) erosion_2 = cv2.erode(pie,kernel,iterations = 2) erosion_3 = cv2.erode(pie,kernel,iterations = 3) res = np.hstack((erosion_1,erosion_2,erosion_3)) cv2.imshow('res', res) cv2.waitKey(0) cv2.destroyAllWindows()

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形态学-膨胀操作

img = cv2.imread('dige.png') cv2.imshow('img', img) cv2.waitKey(0) cv2.destroyAllWindows()

kernel = np.ones((3,3),np.uint8) dige_erosion = cv2.erode(img,kernel,iterations = 1)cv2.imshow('erosion', erosion) cv2.waitKey(0) cv2.destroyAllWindows()

kernel = np.ones((3,3),np.uint8) dige_dilate = cv2.dilate(dige_erosion,kernel,iterations = 1)cv2.imshow('dilate', dige_dilate) cv2.waitKey(0) cv2.destroyAllWindows()

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pie = cv2.imread('pie.png')kernel = np.ones((30,30),np.uint8) dilate_1 = cv2.dilate(pie,kernel,iterations = 1) dilate_2 = cv2.dilate(pie,kernel,iterations = 2) dilate_3 = cv2.dilate(pie,kernel,iterations = 3) res = np.hstack((dilate_1,dilate_2,dilate_3)) cv2.imshow('res', res) cv2.waitKey(0) cv2.destroyAllWindows()

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开运算与闭运算

# 开：先腐蚀，再膨胀 img = cv2.imread('dige.png')kernel = np.ones((5,5),np.uint8) opening = cv2.morphologyEx(img, cv2.MORPH_OPEN, kernel)cv2.imshow('opening', opening) cv2.waitKey(0) cv2.destroyAllWindows()

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# 闭：先膨胀，再腐蚀 img = cv2.imread('dige.png')kernel = np.ones((5,5),np.uint8) closing = cv2.morphologyEx(img, cv2.MORPH_CLOSE, kernel)cv2.imshow('closing', closing) cv2.waitKey(0) cv2.destroyAllWindows()

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梯度运算

# 梯度=膨胀-腐蚀 pie = cv2.imread('pie.png') kernel = np.ones((7,7),np.uint8) dilate = cv2.dilate(pie,kernel,iterations = 5) erosion = cv2.erode(pie,kernel,iterations = 5)res = np.hstack((dilate,erosion))cv2.imshow('res', res) cv2.waitKey(0) cv2.destroyAllWindows()

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gradient = cv2.morphologyEx(pie, cv2.MORPH_GRADIENT, kernel)cv2.imshow('gradient', gradient) cv2.waitKey(0) cv2.destroyAllWindows()

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礼帽与黑帽

礼帽 = 原始输入-开运算结果
黑帽 = 闭运算-原始输入

#礼帽 img = cv2.imread('dige.png') tophat = cv2.morphologyEx(img, cv2.MORPH_TOPHAT, kernel) cv2.imshow('tophat', tophat) cv2.waitKey(0) cv2.destroyAllWindows()

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#黑帽 img = cv2.imread('dige.png') blackhat= cv2.morphologyEx(img,cv2.MORPH_BLACKHAT, kernel) cv2.imshow('blackhat ', blackhat ) cv2.waitKey(0) cv2.destroyAllWindows()