import cv2

# Load two images
img1 = cv2.imread("cat.jpg")
img2 = cv2.imread('dog.jpg')

rows,cols,channels = img2.shape
roi = img1[0:rows, 0:cols ]
"""
img1 = cv2.imread('messi5.jpg')
img2 = cv2.imread('opencv_logo.png')

# I want to put logo on top-left corner, So I create a ROI
rows,cols,channels = img2.shape
roi = img1[0:rows, 0:cols ]
"""
# Now create a mask of logo and create its inverse mask also
img2gray = cv2.cvtColor(img2,cv2.COLOR_BGR2GRAY)
cv2.imshow('res1',img2gray)
ret, mask = cv2.threshold(img2gray, 10, 255, cv2.THRESH_BINARY)
mask_inv = cv2.bitwise_not(mask)
cv2.imshow('res2',mask_inv)

# Now black-out the area of logo in ROI
img1_bg = cv2.bitwise_and(roi,roi,mask = mask_inv)
cv2.imshow('res3',img1_bg)
# Take only region of logo from logo image.
img2_fg = cv2.bitwise_and(img2,img2,mask = mask)
cv2.imshow('res4',img2_fg)

# Put logo in ROI and modify the main image
dst = cv2.add(img1_bg,img2_fg)
img1[0:rows, 0:cols ] = dst

cv2.imshow('res',img1)
cv2.waitKey(0)
cv2.destroyAllWindows()
import cv2

# Load two images
img1 = cv2.imread("cat.jpg")
img2 = cv2.imread('dog.jpg')

rows,cols,channels = img2.shape
roi = img1[0:rows, 0:cols ]
"""
img1 = cv2.imread('messi5.jpg')
img2 = cv2.imread('opencv_logo.png')

# I want to put logo on top-left corner, So I create a ROI
rows,cols,channels = img2.shape
roi = img1[0:rows, 0:cols ]
"""
# Now create a mask of logo and create its inverse mask also
img2gray = cv2.cvtColor(img2,cv2.COLOR_BGR2GRAY)
cv2.imshow('res1',img2gray)
ret, mask = cv2.threshold(img2gray, 10, 255, cv2.THRESH_BINARY)
mask_inv = cv2.bitwise_not(mask)
cv2.imshow('res2',mask_inv)

# Now black-out the area of logo in ROI
img1_bg = cv2.bitwise_and(roi,roi,mask = mask_inv)
cv2.imshow('res3',img1_bg)
# Take only region of logo from logo image.
img2_fg = cv2.bitwise_and(img2,img2,mask = mask)
cv2.imshow('res4',img2_fg)

# Put logo in ROI and modify the main image
dst = cv2.add(img1_bg,img2_fg)
img1[0:rows, 0:cols ] = dst

cv2.imshow('res',img1)
cv2.waitKey(0)
cv2.destroyAllWindows()
# Load two images img1 = cv2.imread('messi5.jpg') img2 = cv2.imread('opencv_logo.png')  # I want to put logo on top-left corner, So I create a ROI rows,cols,channels = img2.shape roi = img1[0:rows, 0:cols ] # Now create a mask of logo and create its inverse mask also # Now black-out the area of logo in ROI # Take only region of logo from logo image. # Put logo in ROI and modify the main image