pasting images on white background of size 39*39 randomly anywhere on white background-CodePudding

I would like to generate a white image and then paste small 24*24 crops on (images) that white images but it should paste randomly anywhere on that white background. How should I do it?

import os

im1 = Image.open('data/src/white_image.jpg')
for path in dataset_paths:
    im2 = Image.open(path)
    back_im = im1.copy()
    back_im.paste(im2)
    back_im.save(f'data/dst/{os.path.basename(path)}')

also, it should paste randomly anywhere. please help!

CodePudding user response：

Try the following code

import random
from PIL import Image
import os
import glob

dataset_paths = [filename for filename in glob.glob('/home/user/Downloads/Dataset/training/cat/*.png')]

for i, path in enumerate(dataset_paths):
    bg_im = Image.new(mode="RGB", size=(1024, 1024), color="white")
    img = Image.open(path).resize((24, 24))
    
    bg_width, bg_height = bg_im.size
    img_width, img_height = img.size
    max_x = bg_width - (img_width * 2)
    max_y = bg_height - (img_height * 2)

    if max_x < 0 or max_y < 0:
        print("image cannot be completely pasted on background image")
        continue 

    random_x = random.randint(0, max_x)
    random_y = random.randint(0, max_y)

    bg_im.paste(img, box=(random_x, random_y))
    bg_im.save(f'data/dst/{os.path.basename(path}')

PS. I recommend you to use Image.new for creating a background image instead of Image.open. You can replace size of the background image to whatever you need.

CodePudding user response：

As you are using opencv you can just paste the image into the right position.

large_img[y_offset:y_end,x_offset:x_end] = small_img

More in depth explanations can be found here