Flip WebCam input Horizontally

[goro]

I working on ARToolKit & Successfully flipped the Webcam Image. But now the issue is Marker is not getting detected in flipped texture.

Here is the code:

import viz
import vizact
import Image
viz.go()

#------------------------ Flip Horizontal ------------------------------#
def FlipHorizontal(cam_tex,texture):
	image = Image.fromstring('RGB',[width,height],cam_tex.getImageData())
	"""Copy the PIL image to the Vizard texture"""
	im = image.transpose(Image.FLIP_LEFT_RIGHT)
	RGB2BGR = (
		0.0, 0.0, 1.0, 0.0,
		0.0, 1.0, 0.0, 0.0,
		1.0, 0.0, 0.0, 0.0 )
	texture.setImageData(im.convert('RGB',RGB2BGR).tostring(),im.size)
	
#Create a blank Vizard texture
tex = viz.addBlankTexture([1,1],format=viz.TEX_BGR)

#Load Video Camera
video = viz.add('VideoCamera.dle')
# Load Web Camera & set cam as Video Texture
cam = video.addWebcam()

#Load ARToolKit
ar = viz.add('ARToolKit.dle')

width,height,type = cam.getSize()

# Flip Video Texture Horizontally
vizact.ontimer(0,FlipHorizontal,cam,tex)

# Set ARToolKit Camera with cam as texture
camera = ar.addCamera(tex)  #---- This Dosn't work
#camera = ar.addCamera(cam) #---- This works
camera.setDebug(True)

# Add AR Marker
marker = camera.addMarker('ar/patt.hiro',width = 1000.00) #patt.hiro or patt.hiro_fh 

#Add logo model
logo = viz.add('logo.ive')

#Link logo model to marker sensor
link = viz.link(marker,logo)

[farshizzo]

You need to flip the image before ARToolkit processes the camera image. Try scheduling the FlipHorizontal function with a lower update priority using the following code, instead of using vizact.ontimer:

vizact.onupate(viz.PRIORITY_PLUGINS,FlipHorizontal,cam,tex)