| import numpy as np |
| import cv2 as cv |
| from matplotlib import pyplot as plt |
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| img = cv.imread('IMG_2799.jpg') |
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| print(img.shape) |
| img = cv.resize(img,(400, 300), cv.INTER_AREA) |
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| hsv = cv.cvtColor(img, cv.COLOR_BGR2HSV) |
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| lower_blue = np.array([100,20,20]) |
| upper_blue = np.array([300,255,255]) |
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| mask = cv.inRange(hsv, lower_blue, upper_blue) |
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| res = cv.bitwise_and(hsv,hsv, mask= mask) |
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| plt.figure(figsize=(20, 10)) |
| plt.subplot(121) |
| plt.imshow(img) |
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| plt.subplot(122) |
| plt.imshow(mask) |
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| kernel = np.ones((5,5),np.uint8) |
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| opening = cv.morphologyEx(mask,cv.MORPH_OPEN,kernel, iterations = 2) |
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| sure_bg = cv.dilate(opening,kernel,iterations=1) |
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| plt.figure(figsize=(10,10)) |
| plt.subplot(221) |
| plt.imshow(img) |
| plt.subplot(222) |
| plt.imshow(mask) |
| plt.subplot(223) |
| plt.imshow(opening) |
| plt.subplot(224) |
| plt.imshow(sure_bg) |
| plt.show() |
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