下面的示例代码在OS X上对我来说很好用，但是跨平台使用wx令我有些惊讶。它几乎是相同的代码，不同之处cvtColor在于重新分配了from的结果，并添加了wx.Panel（是重要部分）的子类。
import wx
import cv, cv2
class ShowCapture(wx.Panel):
def __init__(self, parent, capture, fps=15):
wx.Panel.__init__(self, parent)
self.capture = capture
ret, frame = self.capture.read()
height, width = frame.shape[:2]
parent.SetSize((width, height))
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
self.bmp = wx.BitmapFromBuffer(width, height, frame)
self.timer = wx.Timer(self)
self.timer.Start(1000./fps)
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_TIMER, self.NextFrame)
def OnPaint(self, evt):
dc = wx.BufferedPaintDC(self)
dc.DrawBitmap(self.bmp, 0, 0)
def NextFrame(self, event):
ret, frame = self.capture.read()
if ret:
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
self.bmp.CopyFromBuffer(frame)
self.Refresh()
capture = cv2.VideoCapture(0)
capture.set(cv.CV_CAP_PROP_FRAME_WIDTH, 320)
capture.set(cv.CV_CAP_PROP_FRAME_HEIGHT, 240)
app = wx.App()
frame = wx.Frame(None)
cap = ShowCapture(frame, capture)
frame.Show()
app.MainLoop()
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