import cv2
import numpy as np
from matplotlib import pyplot as plt
img = cv2.imread('img_cpl.jpg', 0)
ret,trunc = cv2.threshold(img, 61, 255, cv2.THRESH_TRUNC)
ret,tozeroinv = cv2.threshold(img, 127, 255, cv2.THRESH_TOZERO_INV)
titles = ['Original','TRUNC','TOZERO_INV']
images = [img, trunc, tozeroinv]
for i in xrange(3):
plt.subplot(1, 3, i+1), plt.imshow(images[i], 'gray')
plt.title(titles[i])
plt.xticks([]),plt.yticks([])
plt.show()
Kuva otettu Hoya PL-CIR pyöröpolarisaatiosuotimella. Tolpassa on kamera.
Alkuperäinen
Trunc
Tozero_inv
import cv2
import numpy as np
from matplotlib import pyplot as plt
img = cv2.imread('img.jpg',0)
can = cv2.Canny(img,10,200)
plt.subplot(121),plt.imshow(can,cmap = 'gray')
plt.title('Edge image'), plt.xticks([]), plt.yticks([])
plt.show()
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