尝试使边界曲线向内移动

import cv2
import numpy as np

# 读取图像
image = cv2.imread('path_to_image.jpg')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

# 二值化处理
_, binary = cv2.threshold(gray, 127, 255, cv2.THRESH_BINARY)

# 查找轮廓
contours, _ = cv2.findContours(binary, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)

# 创建一个新的图像副本
new_image = image.copy()

for contour in contours:
    # 计算边界框
    x, y, w, h = cv2.boundingRect(contour)
    
    # 向内移动边界
    offset = 10  # 收缩步长
    new_contour = contour - offset
    new_contour = np.clip(new_contour, 0, None)  # 确保坐标不小于0
    
    # 绘制新的轮廓
    cv2.drawContours(new_image, [new_contour], -1, (0, 255, 0), 2)

# 显示结果
cv2.imshow('Original Image', image)
cv2.imshow('Modified Image', new_image)
cv2.waitKey(0)
cv2.destroyAllWindows()