【Python小程序】根据指定坐标裁剪指定大小的图像

import cv2

def crop_image(image_path, width, height):
    """  
    裁剪图像，并确保裁剪区域在图像尺寸范围内，然后保存裁剪后的图像  
    :param image_path: 原始图像文件路径  
    :param width: 裁剪区域的宽度  
    :param height: 裁剪区域的高度  
    """  
    # 读取图像
    image = cv2.imread(image_path)

    # 检查图像是否成功加载  
    if image is None:  
        print(f"无法加载图像：{image_path}")  
        return False  
    
    # 获取图像的原始尺寸
    image_height, image_width = image.shape[:2]
    print(f"图像的原始尺寸：{image_height}×{image_width}")
    
    # 计算裁剪的起始点
    start_x = (image_width - width) // 2
    start_y = (image_height - height) // 2
    
    # 裁剪图像
    if start_x >= 0 and start_y >= 0:
        cropped_img = image[start_y:start_y + height, start_x:start_x + width]
    else:
        print("Specified width and height are larger than the image dimensions.")
        return
    
    # 保存裁剪后的图像
    output_path = image_path.split(".")[0] + f"_{width}-{height}"  + f"_center" + "." + image_path.split(".")[1]
    cv2.imwrite(output_path, cropped_img)

# 使用示例
image_path = 'image.png'  # 替换为你的图像路径
output_path = 'cropped_image_center.png'      # 输出图像的路径
width = 700                           # 指定的宽度
height = 700                          # 指定的高度

crop_image(image_path, width, height)