python 中的 raspberry pi 相机无法拍摄图像
can't capture image by raspberry pi camera in python
我在尝试使用 Raspberry Pi 相机拍照时遇到问题。
当我执行这段代码时:
import sys
sys.path.append('/usr/local/lib/python3.4/site-packages')
import cv2
import numpy as np
import detect
cap = cv2.VideoCapture(0)
while(True):
ret, frame = cap.read()
img = detect.detect(frame)
cv2.imshow('frame',img)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
我收到错误:
Traceback (most recent call last):
...
...
...
TypeError: 'NoneType' object is not subscriptable
我搜索解决了这个问题,在终端中找到了一个命令:
sudo modprobe bcm2835-v4l2
暂时解决了问题,但是重启后又出现了Raspberry Pi。
请帮我解决这个问题。
编辑文件 /etc/modules
(以 root 身份)并添加 bcm2835-vl42
行,如下所示:
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
# v4l2 added for OpenCV video capture
bcm2835-v4l2
我在尝试使用 Raspberry Pi 相机拍照时遇到问题。
当我执行这段代码时:
import sys
sys.path.append('/usr/local/lib/python3.4/site-packages')
import cv2
import numpy as np
import detect
cap = cv2.VideoCapture(0)
while(True):
ret, frame = cap.read()
img = detect.detect(frame)
cv2.imshow('frame',img)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
我收到错误:
Traceback (most recent call last):
...
...
...
TypeError: 'NoneType' object is not subscriptable
我搜索解决了这个问题,在终端中找到了一个命令:
sudo modprobe bcm2835-v4l2
暂时解决了问题,但是重启后又出现了Raspberry Pi。
请帮我解决这个问题。
编辑文件 /etc/modules
(以 root 身份)并添加 bcm2835-vl42
行,如下所示:
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
# v4l2 added for OpenCV video capture
bcm2835-v4l2