Undistorted resize using pil

Make a deformation free resize

Code

import os
from PIL import Image
import math


def resize_pad(image,target_size):
    w,h = image.size
    minx = min(w,h)
    if minx == h:
        # w You can zoom to 224
        # h Conduct padding
        new_h = int(h * (target_size/w))
        image = image.resize((target_size,new_h),Image.Resampling.BICUBIC)
        #  Generate one targe_size Size chart 
        aimage = Image.new('RGB',(target_size,target_size),(127,127,127))
        #  Calculate the size to be pasted on it 
        psize_up = (target_size - new_h)//2
        #  Paste the scaled image 
        aimage.paste(image,(0,psize_up))
        aimage.show()
    else:
        # minx==w
        # h You can zoom to 224
        # w Conduct padding
        new_w = int(w * (target_size/h))
        image = image.resize((new_w,target_size),Image.Resampling.BICUBIC)
        #  Generate one targe_size Size chart 
        aimage = Image.new('RGB',(target_size,target_size),(127,127,127))
        #  Calculate the size to be pasted on the left 
        psize_left = (target_size - new_w)//2
        #  Paste the scaled image 
        aimage.paste(image,(psize_left,0))
        aimage.show()


if __name__ == '__main__':
    image_path = "E:/my_datasets/keypoint_2d/hand_keypoint/hand_keypoint/val/JPEGImages/1577.png"
    image = Image.open(image_path).convert('RGB')
    ori = image.resize((224,224))
    ori.show()
    resize_pad(image,target_size=224)