bobloy
5 years ago
parent
11a5a7505b
commit
dc8d314713
@ -1,5 +1,7 @@
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{
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"maps": [
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"simple_blank_map"
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"simple_blank_map",
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"test",
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"test2"
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]
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}
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@ -1,3 +1,4 @@
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{
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"region_max": 70
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"region_max": 70,
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"extension": "jpg"
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}
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@ -0,0 +1,132 @@
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import os
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import pathlib
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from PIL import Image, ImageColor, ImageFont, ImageOps, ImageDraw
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from PIL.ImageDraw import _color_diff
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def get_center(points):
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"""
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Taken from https://stackoverflow.com/questions/4355894/how-to-get-center-of-set-of-points-using-python
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"""
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x = [p[0] for p in points]
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y = [p[1] for p in points]
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return sum(x) / len(points), sum(y) / len(points)
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def floodfill(image, xy, value, border=None, thresh=0) -> set:
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"""
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Taken and modified from PIL.ImageDraw.floodfill
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(experimental) Fills a bounded region with a given color.
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:param image: Target image.
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:param xy: Seed position (a 2-item coordinate tuple). See
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:ref:`coordinate-system`.
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:param value: Fill color.
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:param border: Optional border value. If given, the region consists of
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pixels with a color different from the border color. If not given,
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the region consists of pixels having the same color as the seed
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pixel.
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:param thresh: Optional threshold value which specifies a maximum
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tolerable difference of a pixel value from the 'background' in
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order for it to be replaced. Useful for filling regions of
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non-homogeneous, but similar, colors.
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"""
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# based on an implementation by Eric S. Raymond
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# amended by yo1995 @20180806
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pixel = image.load()
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x, y = xy
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try:
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background = pixel[x, y]
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if _color_diff(value, background) <= thresh:
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return set() # seed point already has fill color
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pixel[x, y] = value
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except (ValueError, IndexError):
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return set() # seed point outside image
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edge = {(x, y)}
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# use a set to keep record of current and previous edge pixels
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# to reduce memory consumption
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filled_pixels = set()
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full_edge = set()
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while edge:
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filled_pixels.update(edge)
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new_edge = set()
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for (x, y) in edge: # 4 adjacent method
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for (s, t) in ((x + 1, y), (x - 1, y), (x, y + 1), (x, y - 1)):
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# If already processed, or if a coordinate is negative, skip
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if (s, t) in full_edge or s < 0 or t < 0:
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continue
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try:
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p = pixel[s, t]
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except (ValueError, IndexError):
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pass
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else:
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full_edge.add((s, t))
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if border is None:
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fill = _color_diff(p, background) <= thresh
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else:
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fill = p != value and p != border
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if fill:
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pixel[s, t] = value
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new_edge.add((s, t))
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full_edge = edge # discard pixels processed
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edge = new_edge
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return filled_pixels
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class Regioner:
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def __init__(
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self, filepath: pathlib.Path, filename: str, wall_color="black", region_color="white"
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):
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self.filepath = filepath
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self.filename = filename
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self.wall_color = ImageColor.getcolor(wall_color, "L")
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self.region_color = ImageColor.getcolor(region_color, "L")
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def execute(self):
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base_img_path = self.filepath / self.filename
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if not base_img_path.exists():
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return None
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masks_path = self.filepath / "masks"
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if not masks_path.exists():
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os.makedirs(masks_path)
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black = ImageColor.getcolor("black", "L")
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white = ImageColor.getcolor("white", "L")
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base_img: Image.Image = Image.open(base_img_path).convert("L")
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already_processed = set()
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mask_count = 0
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mask_centers = {}
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for y1 in range(base_img.height):
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for x1 in range(base_img.width):
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if (x1, y1) in already_processed:
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continue
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if base_img.getpixel((x1, y1)) == self.region_color:
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filled = floodfill(base_img, (x1, y1), black, self.wall_color)
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if filled: # Pixels were updated, make them into a mask
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mask = Image.new("L", base_img.size, 255)
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for x2, y2 in filled:
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mask.putpixel((x2, y2), 0)
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mask_count += 1
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mask = mask.convert("L")
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mask.save(masks_path / f"{mask_count}.png", "PNG")
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mask_centers[mask_count] = get_center(filled)
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already_processed.update(filled)
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number_img = Image.new("L", base_img.size, 255)
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fnt = ImageFont.load_default()
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d = ImageDraw.Draw(number_img)
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for mask_num, center in mask_centers.items():
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d.text(center, str(mask_num), font=fnt, fill=0)
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number_img.save(self.filepath / f"numbers.png", "PNG")
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return mask_centers
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