def __init__(self, prefix, dryRun):
h, w = 300, 300
img = np.zeros((h, w, 3), np.uint8)
img[:,:] = (255, 255, 255)
self.brush = Brush("Brush")
self.sketcher = Sketcher("Dataset Creator", img, self.brush)
self.__folders = OCR.generateFolderList(OCR.DIGITS | OCR.LETTERS | OCR.SYMBOLS)
self.__prefix = prefix
self.__lastFile = None
self.__dryRun = dryRun