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[英]How to fix the usb.core.USBError of thermal printer connected to raspberry pi using USB port
[英]How to capture and save images from two USB cameras connected to a Raspberry Pi 3 simultaneously using OpenCV?
我希望使用由連接到Raspberry Pi 3的兩個USB攝像機拍攝的一對上下一對立體聲圖像,以用於無人機。 如何將同時拍攝的圖像保存在pi上的文件夾中? 這是使兩個攝像機在兩個單獨的窗口上運行的工作:
import cv2
frame0 = cv2.VideoCapture(1)
frame1 = cv2.VideoCapture(3)
while 1:
ret0, img0 = frame0.read()
ret1, img00 = frame1.read()
img1 = cv2.resize(img0,(1280,720)) #360,240
img2 = cv2.resize(img00,(1280,720))
if (frame0):
cv2.imshow('img1',img1)
if (frame1):
cv2.imshow('img2',img2)
k = cv2.waitKey(30) & 0xff
if k == 27:
break
frame0.release()
frame1.release()
cv2.destroyAllWindows()
每7秒將兩個圖像集與.py文件保存在同一目錄中。
import cv2
import time
frames = 100
interval = 7
frame0 = cv2.VideoCapture(1)
frame0.release()
frame0 = cv2.VideoCapture(1)
frame1 = cv2.VideoCapture(3)
frame1.release()
frame1 = cv2.VideoCapture(3)
for i in range(frames):
ret0, img0 = frame0.read()
ret1, img00 = frame1.read()
img1 = cv2.resize(img0,(1280,720)) #360,240
img2 = cv2.resize(img00,(1280,720))
if (frame0):
cv2.imwrite('./img_'+str(i).zfill(4)+'.jpg',img1)
if (frame1):
cv2.imwrite('./img2_'+str(i).zfill(4)+'.jpg',img2)
time.sleep(interval)
#k = cv2.waitKey(30) & 0xff
#if k == 27:
# break
frame0.release()
frame1.release()
cv2.destroyAllWindows()
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