# opencv-python 用于计算机视觉和图像处理 ## Usage ``` pip install opencv-python import cv2 # 加载图像 image = cv2.imread('image.jpg') if image is not None: # 将图像转换为灰度图 gray_image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY) # 显示图像 cv2.imshow('Image', image) cv2.waitKey(0) cv2.destroyAllWindows() else: print('Failed to load image.') # 打开摄像头 cap = cv2.VideoCapture(0) while True: # 读取视频帧 ret, frame = cap.read() # 显示视频帧 cv2.imshow('Video', frame) # 检测键盘输入 if cv2.waitKey(1) & 0xFF == ord('q'): break # 释放摄像头资源 cap.release() cv2.destroyAllWindows() ```