Create a removes a circle, blurs the edges and pastes that image on a blank transparent image

blurred-transparent-circles.py

from PIL import Image, ImageFilter, ImageDraw
import glob
import time

def circleblur(FILENAME,saveDirectory,count):
    im1 = Image.open(FILENAME)
    im1 = im1.resize((512,512), Image.BICUBIC)
    im2 = Image.new("RGBA",im1.size,(0,0,0,0))
    mask = Image.new("L", im1.size, 0)
    draw = ImageDraw.Draw(mask)
    draw.ellipse((50, 50, 462, 462), fill=255)
    #draw.ellipse((100, 100, 412, 412), fill=250)
    im = Image.composite(im1, im2, mask)
    mask_blur = mask.filter(ImageFilter.GaussianBlur(15))
    im = Image.composite(im1, im2, mask_blur)
    timestr = time.strftime("%Y%m%d-%H%M%S")
    file = saveDirectory+timestr+"_"+str(count+1)+".png"
    im.save(file)
    return im

# Get a list of all .txt files in the current directory
FILENAMES = glob.glob('/home/jack/Downloads/to-vid/whiteborders/*.png')
count = 0
for FILENAME in FILENAMES:
    count = count +1
    saveDirectory ="/home/jack/Desktop/TENSORFLOW/clouds/"
    circleblur(FILENAME,saveDirectory,count)

gistfile1.txt

The small circlular image in the larger image is an example. https://pbs.twimg.com/media/FlTO9kFaEAQcVi8?format=jpg&name=small