wehub-resource-sync
76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
import colorsys
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import itertools
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from copy import deepcopy
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from modelscope.hub.file_download import model_file_download
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from PIL import Image, ImageDraw, ImageFont
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from typing import Any, List, Literal
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def _shuffle_colors(nums: List[Any]) -> List[Any]:
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if len(nums) == 1:
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return nums
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mid = len(nums) // 2
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left = nums[:mid]
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right = nums[mid:]
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left = _shuffle_colors(left)
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right = _shuffle_colors(right)
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new_nums = []
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for x, y in zip(left, right):
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new_nums += [x, y]
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new_nums += left[len(right):] or right[len(left):]
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return new_nums
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def generate_colors():
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vs_combinations = [(v, s) for v, s in itertools.product([0.7, 0.3, 1], [0.7, 0.3, 1])]
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colors = [colorsys.hsv_to_rgb(i / 16, s, v) for v, s in vs_combinations for i in _shuffle_colors(list(range(16)))]
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colors = [(int(r * 255), int(g * 255), int(b * 255)) for r, g, b in colors]
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return _shuffle_colors(colors)
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colors = generate_colors()
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color_mapping = {}
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def _calculate_brightness(image, region: List[int]):
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cropped_image = image.crop(region)
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grayscale_image = cropped_image.convert('L')
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pixels = list(grayscale_image.getdata())
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average_brightness = sum(pixels) / len(pixels)
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return average_brightness
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def draw_bbox(image: Image.Image,
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ref: List[str],
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bbox: List[List[int]],
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norm_bbox: Literal['norm1000', 'none'] = 'norm1000'):
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bbox = deepcopy(bbox)
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# norm bbox
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for i, box in enumerate(bbox):
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for i in range(len(box)):
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box[i] = int(box[i])
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if norm_bbox == 'norm1000':
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box[0] = box[0] / 1000 * image.width
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box[2] = box[2] / 1000 * image.width
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box[1] = box[1] / 1000 * image.height
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box[3] = box[3] / 1000 * image.height
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draw = ImageDraw.Draw(image)
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# draw bbox
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assert len(ref) == len(bbox), f'len(refs): {len(ref)}, len(bboxes): {len(bbox)}'
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for (left, top, right, bottom), box_ref in zip(bbox, ref):
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if box_ref not in color_mapping:
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color_mapping[box_ref] = colors[len(color_mapping) % len(colors)]
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color = color_mapping[box_ref]
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draw.rectangle([(left, top), (right, bottom)], outline=color, width=3)
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# draw text
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file_path = model_file_download('Qwen/Qwen-VL-Chat', 'SimSun.ttf')
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font = ImageFont.truetype(file_path, 20)
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for (left, top, _, _), box_ref in zip(bbox, ref):
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brightness = _calculate_brightness(
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image, [left, top, min(left + 100, image.width),
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min(top + 20, image.height)])
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draw.text((left, top), box_ref, fill='white' if brightness < 128 else 'black', font=font)
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