How do you access pngs from different directories and merge them?-CodePudding

I can't find a way around merging multiple pngs if they're not in the same directory as main.py.
I'd use:

from PIL import Image

#myFolder has layer1.png, layer2.png, myFolder is in same directory as main.py
Image.alpha_composite(-,-).save("test1.png")

to merge the pngs together.

CodePudding user response：

Just use the full path:

img1 = "/path/to/layer1.png"
img2 = "/path/to/layer2.png"
Image.alpha_composite(img1,img2).save("test1.png")

Note that this is untested as I don't use cv2 very often.

CodePudding user response：

Python has several modules that can build path names. pathlib is a good choice. Python scripts and modules include a magic variable __file__ that names the file being executed. You can use that to find the script's directory and then pathlib to get the path to myFolder and its contents. Path overrides the division operator to join path names. Clever... if not a bit too clever. After that, you need to open the two images to get the composite.

from PIL import Image
from pathlib import Path

# get this script's directory and then png directory underneath
script_folder = Path(__file__).absolute().parent
my_folder = script_folder/"myFolder"

Image.alpha_composite(Image.open(my_folder/"layer1.png"), 
    Image.open(my_folder/"layer2.png")).save("test1.png")