Datasets:
File size: 2,668 Bytes
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#Set your paths here
#path to provided foreground images
fg_path = "fg"
#path to provided alpha mattes
a_path = "alpha"
#Path to background images
bg_path = "bg"
#Path to folder where you want the composited images to go
out_path = "composited_images"
fg_files = [line.rstrip('\n') for line in open('./transparent-460-test-fg-names.txt')]
bg_files = [line.rstrip('\n') for line in open('./transparent-460-test-bg-names.txt')]
##############################################################
from PIL import Image
import os
import math
import time
def composite4(fg, bg, a, w, h):
bbox = fg.getbbox()
bg = bg.crop((0,0,w,h))
fg_list = fg.load()
bg_list = bg.load()
a_list = a.load()
for y in range(h):
for x in range (w):
alpha = a_list[x,y][0] / 255
t = fg_list[x,y][0]
t2 = bg_list[x,y][0]
if alpha >= 1:
r = int(fg_list[x,y][0])
g = int(fg_list[x,y][1])
b = int(fg_list[x,y][2])
bg_list[x,y] = (r, g, b, 255)
elif alpha > 0:
r = int(alpha * fg_list[x,y][0] + (1-alpha) * bg_list[x,y][0])
g = int(alpha * fg_list[x,y][1] + (1-alpha) * bg_list[x,y][1])
b = int(alpha * fg_list[x,y][2] + (1-alpha) * bg_list[x,y][2])
bg_list[x,y] = (r, g, b, 255)
return bg
num_bgs = 20
bg_iter = iter(bg_files)
num = 0
for im_name in fg_files:
im = Image.open(os.path.join(fg_path, im_name))
a = Image.open(os.path.join(a_path, im_name.split(".")[0]+".png"))
bbox = im.size
w = bbox[0]
h = bbox[1]
if im.mode != 'RGB' and im.mode != 'RGBA':
im = im.convert('RGB')
bcount = 0
for i in range(num_bgs):
bg_name = next(bg_iter)
bg = Image.open(os.path.join(bg_path, bg_name))
if bg.mode != 'RGB':
bg = bg.convert('RGB')
bg_bbox = bg.size
bw = bg_bbox[0]
bh = bg_bbox[1]
wratio = w / bw
hratio = h / bh
ratio = wratio if wratio > hratio else hratio
if ratio > 1:
bg = bg.resize((math.ceil(bw*ratio),math.ceil(bh*ratio)), Image.BICUBIC)
out = composite4(im, bg, a, w, h)
out.save(out_path + im_name[:len(im_name)-4] + '_' + str(bcount) + '.png', "PNG")
print(out_path + im_name[:len(im_name)-4] + '_' + str(bcount) + '.png')
bcount += 1
print("Finished")
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