45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
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import cv2
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import numpy as np
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def resize_image(image, max_size=1200):
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# 获取原始尺寸
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height, width = image.shape[:2]
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# 计算缩放比例
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scale = min(max_size/width, max_size/height)
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if scale < 1:
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# 只有当图像过大时才进行缩放
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new_width = int(width * scale)
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new_height = int(height * scale)
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resized = cv2.resize(image, (new_width, new_height))
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return resized, scale
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return image, 1.0
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def mouse_callback(event, x, y, flags, param):
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if event == cv2.EVENT_LBUTTONDOWN:
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# 计算原始图像上的坐标
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original_x = int(x / scale)
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original_y = int(y / scale)
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print(f'原始图像坐标 (x, y): ({original_x}, {original_y})')
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# 在缩放后的图像上标记点击位置
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cv2.circle(displayed_img, (x, y), 3, (0, 255, 0), -1)
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cv2.imshow('image', displayed_img)
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# 读取图像
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img = cv2.imread(r"E:\datasets\UAV\134\project\images\20240312_093841_W_W.jpg")
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if img is None:
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print('错误：无法读取图像')
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exit()
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# 缩放图像
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displayed_img, scale = resize_image(img)
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# 创建窗口并设置鼠标回调函数
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cv2.imshow('image', displayed_img)
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cv2.setMouseCallback('image', mouse_callback)
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# 等待按键，按 'q' 退出
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while True:
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if cv2.waitKey(1) & 0xFF == ord('q'):
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break
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cv2.destroyAllWindows()
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