Python批量剪切图像并保存

最新推荐文章于 2025-04-24 17:46:29 发布

Privirea Ta

最新推荐文章于 2025-04-24 17:46:29 发布

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分类专栏：图像处理文章标签： python

本文链接：https://blog.youkuaiyun.com/qq_37497883/article/details/125715925

版权

import cv2
import os
import numpy as np

def flip(image,change_angle):
    # Extracting height and width from
    # image shape
    height, width = image.shape[:2]
    print("old image size (wxh)=", (width, height))
    # get the center coordinates of the
    # image to create the 2D rotation
    # matrix
    center = ((width-1)/2, (height-1)/2)
    # using cv2.getRotationMatrix2D()
    # to get the rotation matrix
    rotate_matrix = cv2.getRotationMatrix2D(center=center, angle=change_angle, scale=1)
    print(rotate_matrix)
    bound_w = height * np.abs(rotate_matrix[0,1]) + width * np.abs(rotate_matrix[0,0])
    bound_h = height * np.abs(rotate_matrix[0,0]) + width * np.abs(rotate_matrix[0,1])
    bound_w = int(round(bound_w, 10))
    bound_h = int(round(bound_h, 10))
    print("new image size (wxh)=", (bound_w, bound_h))
    rotate_matrix[0, 2] += (bound_w-1) / 2 - center[0]
    rotate_matrix