How to stack all images in a directory vertically into one long image-CodePudding

I've been trying to merge images together into one long image. The images are all in one folder and have the same file name format group1.X.jpg with X being a number, starting at 0. I've tried using img.paste to merge the images together. This is basically what I've been trying:

    img1 = Image.open(directory   filePrefix   str(fileFirst)   fileExtension)
    w, h = img1.size
    h = h * fileCount
    img = Image.new("RGB", (w, h))
    tmpImg = img.load()
    console.log("Setup Complete")
    number = 0
    for number in track(range(fileCount - 1)):
        imgPaste = Image.open(dir   prefix   str(number)   extension)
        if not number >= fileCount:
            Image.Image.paste(tmpImg, imgPaste, (0, h * (number   1)))
        number  = 1
    img.save(file)

stitch(directory, filePrefix, fileExtension)

The above code, when ran, outputs the following:

Working... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━   0% -:--:--
Traceback (most recent call last):
  File "c:\Users\marcus\Desktop\Stuff\Files\code\webtoonstitcher.py", line 36, in <module>
    stitch(directory, filePrefix, fileExtension)
  File "c:\Users\marcus\Desktop\Stuff\Files\code\webtoonstitcher.py", line 32, in stitch
    Image.Image.paste(tmpImg, imgPaste, (0, h * (number   1)))
  File "C:\Users\marcus\AppData\Roaming\Python\Python310\site-packages\PIL\Image.py", line 1619, in paste
    if self.mode != im.mode:
AttributeError: 'PixelAccess' object has no attribute 'mode'```

CodePudding user response：

You can get list of all images using glob and then just iterate through that list:

import glob
from PIL import Image


def stitch(directory, file_prefix, file_extension):
    files = glob.glob(directory   f'{file_prefix}*.{file_extension}')
    images = [Image.open(file) for file in files]
    background_width = max([image.width for image in images])
    background_height = sum([image.height for image in images])
    background = Image.new('RGBA', (background_width, background_height), (255, 255, 255, 255))
    y = 0
    for image in images:
        background.paste(image, (0, y))
        y  = image.height
    background.save('image.png')


stitch('', 'group1', 'png')

Sample output:

CodePudding user response：

I think the issue is here:

h = h * fileCount
img = Image.new("RGB", (w, h))

You should delete the first line and change the second line to:

img = Image.new("RGB", (w, h * fileCount))

Otherwise your h will be far too big when you use it later to calculate the offset for paste().