赞
踩
我们主要是通过其arm核来读取USB摄像头的数据,要求所用摄像头支持免驱,如果采用的是工业摄像头,则需要先安装相应的驱动。由于PYNQ Z2镜像自带了opencv库,所以我们主要采用python3+opencv库。
from pynq.overlays.base import BaseOverlay from pynq.lib.video import * import cv2 import numpy as np import time base = BaseOverlay("base.bit") # monitor configuration: 640*480 @ 60Hz,在此我们设置HDMI输出为640*480 Mode = VideoMode(640,480,24) hdmi_out = base.video.hdmi_out hdmi_out.configure(Mode,PIXEL_BGR) hdmi_out.start() # camera (input) configuration frame_in_w = 640 frame_in_h = 480 videoIn = cv2.VideoCapture(0) videoIn.set(cv2.CAP_PROP_FRAME_WIDTH, frame_in_w); videoIn.set(cv2.CAP_PROP_FRAME_HEIGHT, frame_in_h); print("capture device is open: " + str(videoIn.isOpened())) num_frames = 1000 readError = 0 globalimage=np.zeros((640,480,3), np.uint8) while True: # read next image start = time.time() ret, frame_vga = videoIn.read() globalimage=frame_vga if (ret): outframe = hdmi_out.newframe() outframe[:] = frame_vga hdmi_out.writeframe(outframe) #print("test ok") else: readError += 1 end = time.time() seconds=end-start num_frames -=1 if num_frames<10: break
Copyright © 2003-2013 www.wpsshop.cn 版权所有,并保留所有权利。