def buildMat(self,imDir):
self.images = numpy.asarray([])
self.imageNames = []
for im in os.listdir(imDir):
self.imageNames.append(im)
image = Image(os.path.join(imDir,im)).convert("L")
flat = numpy.asarray(list(image.getData()))
while flat.shape[0] < self.__MaxSize:
flat.append([0])
self.images = scipy.vstack((self.images,flat))
