Hi Sabu,
This may show a way for achieving the conversion.
Code:
import viz
import Image
#Create a Vizard texture
tex = viz.addTexture('brick.jpg')
#Get the image data from the VizTexture object
texData = tex.getImageData()
#Get the pixel format from the raw image data which interpreted by the graphics card
if tex.getPixelFormat() == 0:
PILimageMode = 'RGB'
elif tex.getPixelFormat() == 1:
PILimageMode = 'RGBA'
#Convert raw image data to PIL image
newImage = Image.fromstring(PILimageMode,(tex.getSize()[0],tex.getSize()[1]),texData)
#Save PIL image to a jpg file
newImage.save('brick2.jpg')