Webimport cv2 cap = cv2.VideoCapture ( 'data/1.mp4') while cap.isOpened (): ret, frame = cap.read () # 调整窗口大小 cv2.namedWindow ( "frame", 0) # 0可调大小，注意：窗口名必须imshow里面的一窗口名一直 cv2.resizeWindow ( "frame", 1600, 900) # 设置长和宽 cv2.imshow ( 'frame', frame) if cv2.waitKey (1) & 0xFF == ord ... Web15 de out. de 2024 · When cv2.imshow() creates a new window, it passes the flag cv::WINDOW_AUTOSIZE, preventing resize. To resize an already existent window , you …
opencv - why cv2.imshow() results in error in my python …
Web20 de jul. de 2014 · If you need to show an image that is bigger than the screen resolution, you will need to call namedWindow ("Display frame", WINDOW_NORMAL) before the … Web3 de jan. de 2024 · cv2.namedWindow (“image”, cv2.WND_PROP_FULLSCREEN) cv2.setWindowProperty (“image”, cv2.WND_PROP_FULLSCREEN, … blinc reviews
matplotlib.pyplot.imshow — Matplotlib 3.7.1 documentation
Web12 de fev. de 2024 · import cv2 import imutils image = cv2.imread ('1.jpg') # Downsize without aspect ratio image1 = cv2.resize (image, (500,500), interpolation=cv2.INTER_AREA) # Downsize and maintain aspect ratio image2 = imutils.resize (image, width=800) cv2.imshow ('image1', image1) cv2.imshow … Web14 de mar. de 2024 · 这个错误信息通常是由于在使用 OpenCV 的 cv2.VideoCapture 类读取图像序列的时候，所提供的文件名格式不正确引起的。. 这个错误信息中的 "expected 0? … Webmatplotlib.pyplot.imshow(X, cmap=None, norm=None, *, aspect=None, interpolation=None, alpha=None, vmin=None, vmax=None, origin=None, extent=None, … fredericksburg auto auction va