I'm trying to blend 3 images.
1. First i overlay [photo.png](https://i.imgur.com/ZQSl4i9.png) over [base.png](https://i.imgur.com/i6o77oR.png) with some positioning. And it works.
2. Second i'm trying to overlay `effect.png`
over resulting image from previous step.
The result looks like this
I'm using opencv blending described [here](https://docs.opencv.org/3.4/d5/dc4/tutorial_adding_images.html). I've tried to use `cv2.addWeighted` but the result was the same
# blending function
def img_overlay(background, overlay, x_offset, y_offset):
y1, y2 = y_offset, y_offset + overlay.shape[0]
x1, x2 = x_offset, x_offset + overlay.shape[1]
alpha_s = overlay[:, :, 3] / 255.0
alpha_l = 1.0 - alpha_s
for c in range(0, 3):
background[y1:y2, x1:x2, c] = (alpha_s * overlay[:, :, c] +
alpha_l * background[y1:y2, x1:x2, c])
return background
# First step
background = cv2.imread('base.png')
overlay = cv2.imread('photo.png', -1)
x_offset = 386
y_offset = 70
base_photo = img_overlay(background, overlay, x_offset, y_offset)
# Second step
overlay = cv2.imread('effect.png', -1)
final_photo = img_overlay(base_photo, overlay, 0, 0)
cv2.imwrite(result, final_photo)
How i can fix `img_overlay` function so it will overlay `effect.png` correctly?
↧