使用以下代码:
import cv
cv.NamedWindow("w1", cv.CV_WINDOW_AUTOSIZE)
camera_index = 0
capture = cv.CaptureFromCAM(camera_index)
def repeat():
global capture #declare as globals since we are assigning to them now
global camera_index
frame = cv.QueryFrame(capture)
cv.ShowImage("w1", frame)
c = highgui.cvWaitKey(10)
if(c=="n"): #in "n" key is pressed while the popup window is in focus
camera_index += 1 #try the next camera index
capture = cv.CaptureFromCAM(camera_index)
if not capture: #if the next camera index didn't work, reset to 0.
camera_index = 0
capture = cv.CaptureFromCAM(camera_index)
while True:
repeat()
回溯(最近一次呼叫时间): 文件“pycam.py”,第21行,in 重复() 文件“pycam.py”,第12行,重复 c=highgui.cvWaitKey(10个) 名称错误:未定义全局名称“highgui” 清理了摄像机。
新的API有很多变化。以下操作将起作用:
这是一个更简单,更干净的语法!
这意味着
highgui
不存在。尝试以这种方式导入:from opencv import *
。如果不起作用,试着检查你的opencv安装。
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