Hello all. I'm trying to get a video feed in a wxPython GUI (under MS Windows) and thought about using OpenCV. There is a short tutorial on how to achieve this at this page: http://opencv.willowgarage.com/wiki/wxpython (updated late 2009). The problem I'm having is trying to load the libraries to get it to work. I downloaded the exe version of 2.1, which when installed creates the directory "C:\OpenCV2.1", and inside is a folder "bin" with a bunch of DLLs. I assume since there are DLLs in this version I don't need to build or compile any files?
I then tried moving the DLLs to Python's lib\site-packages folder and then tried import the libraries need for the code, but I get the error:
Traceback (most recent call last): File "<pyshell#0>", line 1, in <module> import opencv.cv as cv ImportError: No module named opencv.cv
Traceback (most recent call last): File "<pyshell#0>", line 1, in <module> import opencv.highgui as gui ImportError: No module named opencv.highgui
Strangely, according to the OpenCV Pythondocumentation (http://opencv.willowgarage.com/documentation/python/introduction.html), there is now a single import of all of OpenCV using import cv and OpenCV functions no longer have the "cv" prefix. Could this potentially be the issue? Either way, not exactly sure where I'm going wrong. It's obvious I'm missing some key piece of information, and any help would be as always much appreciated. Here's the code I'm trying to get working (taken from the link above).
import wx import opencv.cv as cv import opencv.highgui as gui class CvMovieFrame(wx.Frame): TIMER_PLAY_ID = 101 def __init__(self, parent): wx.Frame.__init__(self, parent, -1) self.capture = gui.cvCreateCameraCapture(-1) frame = gui.cvQueryFrame(self.capture) self.SetSize((frame.width, frame.height)) self.displayPanel = wx.Panel(self, -1) cv.cvCvtColor(frame, frame, cv.CV_BGR2RGB) self.bmp = wx.BitmapFromBuffer(frame.width, frame.height, frame.imageData) self.Bind(wx.EVT_PAINT, self.onPaint) self.playTimer = wx.Timer(self, self.TIMER_PLAY_ID) wx.EVT_TIMER(self, self.TIMER_PLAY_ID, self.onNextFrame) fps = gui.cvGetCaptureProperty(self.capture, gui.CV_CAP_PROP_FPS) self.Show(True) if fps!=0: self.playTimer.Start(1000/fps)#every X ms else: self.playTimer.Start(1000/15)#assuming 15 fps def onPaint(self, evt): if self.bmp: dc=wx.BufferedPaintDC(self.displayPanel, self.bmp) evt.Skip() def onNextFrame(self, evt): frame = gui.cvQueryFrame(self.capture) if frame: cv.cvCvtColor(frame, frame, cv.CV_BGR2RGB) self.bmp.CopyFromBuffer(frame.imageData) self.Refresh() evt.Skip() if __name__=="__main__": app = wx.App() app.RestoreStdio() CvMovieFrame(None) app.MainLoop()