code: def upsample(input_layer):
      return UpSampling2d(scale=2)(input_layer)
  
file_path: TensorLayer/tensorlayer/app/computer_vision_object_detection/yolov4.py
imports: import tensorflow
  import numpy
  import tensorlayer
  from tensorlayer.activation import mish
  from tensorlayer.layers import Conv2d, MaxPool2d, BatchNorm2d, ZeroPad2d, UpSampling2d, Concat, Input, Elementwise
  from tensorlayer.models import Model
  from tensorlayer import logging
label_desc: Use image node_id 1 for calling a global function with example usage: upsample(input_layer) and returns: UpSampling2d