(-215:Assertion failed) img.type() == CV_8UC1
# you have to convert image to gray
grayimg = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)(-215:Assertion failed) img.type() == CV_8UC1
# you have to convert image to gray
grayimg = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)open cverror: (-215:Assertion failed) src.type() == CV_8UC1 in function 'cv::adaptiveThreshold'
from keras.preprocessing import image
import cv2
import matplotlib.pyplot as plt
img = image.load_img('15f8U.png', grayscale=True, target_size=(224, 224))
img = image.img_to_array(img, dtype='uint8')
print(img.shape)
## output : (224,224,3)
#plt.imshow(img_grey)
th3 = cv2.adaptiveThreshold(img,255,cv2.ADAPTIVE_THRESH_GAUSSIAN_C,cv2.THRESH_BINARY,11,2)
plt.figure(figsize=(20,10))
plt.imshow(th3, cmap="gray")
plt.show()Copyright © 2021 Codeinu
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