[Python] How to perfectly image stitch and align images using Python, even if the images...

your text

import os
import cv2
import numpy as np
from PIL import Image
from config import FOLDER1, FOLDER2, OUTPUT_FOLDER

def stitch_images_and_save(index, df):
"""stitch images and save the result""

try:
files1 = sorted([f for f in os.listdir(FOLDER1) if f.lower().endswith((".png", ".jpg", ".jpeg"))])
files2 = sorted([f for f in os.listdir(FOLDER2) if f.lower().endswith((".png", ".jpg", ".jpeg"))])
imgs1 = files1[index:index+4]
imgs2 = files2[index:index+4]
images = []

# Process first set of images
for img_name in imgs1:
img = Image.open(os.path.join(FOLDER1, img_name))
# original_width, original_height = img.size
# img = img.crop((610, 150, original_width - 100, original_height - 200))
img = img.rotate(90, expand=True).resize((300, 250))
images.append(img)

# Process second set of images
for img_name in imgs2:
img = Image.open(os.path.join(FOLDER2, img_name))
# original_width, original_height = img.size
# img = img.crop((350, 95, original_width - 500, original_height - 253))
img = img.rotate(90, expand=True).resize((300, 250))
images.append(img)


# Create a blank image
width, height = 4 * 300, 2 * 250
merged = Image.new("RGB", (width, height))

for i in range(4):
merged.paste(images, (i * 300, 0))
for i in range(4, 8):
merged.paste(images, ((i - 4) * 300, 250))

# Save merged image
chainage = df.iloc[index].get("Chainage", f"Image_{index}") if index < len(df) else f"Image_{index}"
output_path = os.path.join(OUTPUT_FOLDER, f"{chainage}.jpg")
merged.save(output_path)
return output_path
except Exception as e:
print("Merge Error:", e)




I want the stitch image to look like this image.You want to merge 8 images (4 from each folder) into a single image, arranged in a 2-row, 4-column grid with perfect vertical and horizontal alignment, so that:

• Images don’t have any unwanted gaps or overlaps.
• Images are visually aligned — both in size and position.
• Any extra border/padding/cropping issues are handled before pasting.

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