38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
import cv2
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import numpy as np
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# 读取图像并将其转换为灰度图像
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img = cv2.imread('image.png')
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gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
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# 查找轮廓
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contours, hierarchy = cv2.findContours(gray, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
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# 绘制轮廓
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for contour in contours:
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# 计算轮廓长度
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contour_length = cv2.arcLength(contour, True)
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# 定义线条粗细的列表，使其从1到10逐渐增加
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thickness_list = np.linspace(1, 10, len(contour))
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# 遍历轮廓上的每个点，并在图像中绘制线条
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for i, point in enumerate(contour):
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# 计算当前点的线条粗细
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thickness = int(thickness_list[i])
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# 绘制线条
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if i == 0:
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# 如果是起点，线条粗细为1
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cv2.circle(img, tuple(point[0]), 1, (0, 0, 255), -1)
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else:
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# 如果不是起点，线条粗细为thickness
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prev_point = tuple(contour[i - 1][0])
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curr_point = tuple(point[0])
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cv2.line(img, prev_point, curr_point, (0, 0, 255), thickness)
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# 显示图像
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cv2.imshow('image', img)
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cv2.waitKey(0)
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cv2.destroyAllWindows()
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