import numpy as np
import cv2
import math
 
print("version openCV:"+str(  cv2.__version__ ))
#Load an color image in grayscale
img = cv2.imread('img.jpg',0)
print("img:" +str(img)  )
  

# Create a black image
#img = np.zeros((512,512,3), np.uint8)

# Draw a diagonal blue line with thickness of 5 px
cv2.line(img,(0,0),(511,511),255,5,cv2.LINE_AA)

font = cv2.FONT_HERSHEY_SIMPLEX
cv2.putText(img,'BUT3',(10,500), font, 4,255,2,cv2.LINE_AA)

cv2.imwrite('imggray.png',img)

#load image in color
img = cv2.imread('img.jpg',1)
px = img[100,100]
print("px:"+str(px))
img[200,100] = [255,0,0]

px = img[200,100]
print("px:"+str(px))

for i in range(0,255):
  for j in range(0,255):
    img[200+j,100+i]=[i,j,0]


print("img.shape:"+str(img.shape))
print("img.dtype:"+str(img.dtype))

xo=692
yo=252
larg=60
haut=60
x1=434
y1=218

ROI = img[yo:yo+haut, xo:xo+larg]
for i in range(0,3):
    img[y1+i*100:y1+haut+i*100, x1:x1+larg] = ROI

cv2.imwrite('imgcolor.png',img)

cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()