class_docstr: Generate imInfo
  imInfo is a tensor that contains height, width, scaleInHeight, scaleInWidth
code: def __init__(self, bigdl_type="float"):
      super(ImInfo, self).__init__(bigdl_type)
  
imports: import sys
  from bigdl.util.common import JavaValue
  from zoo.models.image.common.image_model import ImageModel
  from zoo.common.utils import callZooFunc
  from zoo.feature.image.imageset import *
  from zoo.feature.image.imagePreprocessing import *
label_desc: Use image node_id 1 to create a new ImInfo object from inherited base classes: ImagePreprocessing with example: obj = ImInfo(bigdl_type)