stable-diffusion-webui
73 строки · 2.9 Кб
1from PIL import Image, ImageFilter, ImageOps
2
3
4def get_crop_region(mask, pad=0):
5"""finds a rectangular region that contains all masked ares in an image. Returns (x1, y1, x2, y2) coordinates of the rectangle.
6For example, if a user has painted the top-right part of a 512x512 image, the result may be (256, 0, 512, 256)"""
7mask_img = mask if isinstance(mask, Image.Image) else Image.fromarray(mask)
8box = mask_img.getbbox()
9if box:
10x1, y1, x2, y2 = box
11else: # when no box is found
12x1, y1 = mask_img.size
13x2 = y2 = 0
14return max(x1 - pad, 0), max(y1 - pad, 0), min(x2 + pad, mask_img.size[0]), min(y2 + pad, mask_img.size[1])
15
16
17def expand_crop_region(crop_region, processing_width, processing_height, image_width, image_height):
18"""expands crop region get_crop_region() to match the ratio of the image the region will processed in; returns expanded region
19for example, if user drew mask in a 128x32 region, and the dimensions for processing are 512x512, the region will be expanded to 128x128."""
20
21x1, y1, x2, y2 = crop_region
22
23ratio_crop_region = (x2 - x1) / (y2 - y1)
24ratio_processing = processing_width / processing_height
25
26if ratio_crop_region > ratio_processing:
27desired_height = (x2 - x1) / ratio_processing
28desired_height_diff = int(desired_height - (y2-y1))
29y1 -= desired_height_diff//2
30y2 += desired_height_diff - desired_height_diff//2
31if y2 >= image_height:
32diff = y2 - image_height
33y2 -= diff
34y1 -= diff
35if y1 < 0:
36y2 -= y1
37y1 -= y1
38if y2 >= image_height:
39y2 = image_height
40else:
41desired_width = (y2 - y1) * ratio_processing
42desired_width_diff = int(desired_width - (x2-x1))
43x1 -= desired_width_diff//2
44x2 += desired_width_diff - desired_width_diff//2
45if x2 >= image_width:
46diff = x2 - image_width
47x2 -= diff
48x1 -= diff
49if x1 < 0:
50x2 -= x1
51x1 -= x1
52if x2 >= image_width:
53x2 = image_width
54
55return x1, y1, x2, y2
56
57
58def fill(image, mask):
59"""fills masked regions with colors from image using blur. Not extremely effective."""
60
61image_mod = Image.new('RGBA', (image.width, image.height))
62
63image_masked = Image.new('RGBa', (image.width, image.height))
64image_masked.paste(image.convert("RGBA").convert("RGBa"), mask=ImageOps.invert(mask.convert('L')))
65
66image_masked = image_masked.convert('RGBa')
67
68for radius, repeats in [(256, 1), (64, 1), (16, 2), (4, 4), (2, 2), (0, 1)]:
69blurred = image_masked.filter(ImageFilter.GaussianBlur(radius)).convert('RGBA')
70for _ in range(repeats):
71image_mod.alpha_composite(blurred)
72
73return image_mod.convert("RGB")
74
75