import cv2 import numpy as np import os # 读取输入图像 image = cv2.imread('input.jpg') # 检查图像是否读取成功 if image is None: print("无法读取 input.jpg,请确保文件存在且路径正确。") exit() # 获取图像的尺寸 height, width = image.shape[:2] # 创建四个掩码,初始化为全黑 mask1 = np.zeros((height, width), dtype=np.uint8) mask2 = np.zeros((height, width), dtype=np.uint8) mask3 = np.zeros((height, width), dtype=np.uint8) mask4 = np.zeros((height, width), dtype=np.uint8) # 定义两条曲线,用于将图像分割成四部分 x = np.arange(width) # 第一条曲线(例如,正弦函数) frequency1 = 2 * np.pi / width amplitude1 = height / 4 y1 = (height / 2) + amplitude1 * np.sin(frequency1 * x) # 第二条曲线(例如,余弦函数) frequency2 = 4 * np.pi / width amplitude2 = height / 6 y2 = (height / 2) + amplitude2 * np.cos(frequency2 * x) # 确保y值在图像高度范围内 y1 = np.clip(y1, 0, height - 1) y2 = np.clip(y2, 0, height - 1) # 绘制第一个区域的掩码(曲线 y1 以上的区域) for i in range(width): cv2.line(mask1, (i, 0), (i, int(y1[i])), 255) # 绘制第二个区域的掩码(曲线 y1 和 y2 之间的区域) for i in range(width): y_top = int(min(y1[i], y2[i])) y_bottom = int(max(y1[i], y2[i])) cv2.line(mask2, (i, y_top), (i, y_bottom), 255) # 绘制第三个区域的掩码(曲线 y2 以下的区域) for i in range(width): cv2.line(mask3, (i, int(y2[i])), (i, height), 255) # 绘制第四个区域的掩码(剩余区域) mask4 = cv2.bitwise_not(cv2.bitwise_or(cv2.bitwise_or(mask1, mask2), mask3)) # 创建掩码列表 masks = [mask1, mask2, mask3, mask4] # 确保输出目录存在 output_dir = 'output' if not os.path.exists(output_dir): os.makedirs(output_dir) # 应用掩码并保存图片 for idx, mask in enumerate(masks): img_part = cv2.bitwise_and(image, image, mask=mask) cv2.imwrite(os.path.join(output_dir, f'output{idx+1}.png'), img_part) print("图片已成功切割成4张,并保存到 'output' 目录下。")