class_docstr: Modified from matlab : colorangle.m, MATLAB V2019b
  angle = acos(RGB1' * RGB2 / (norm(RGB1) * norm(RGB2)));
  angle = 180 / pi * angle;
class_docstr_tok: ["Modified","from","matlab",":","colorangle.m",",","MATLAB","V2019b","angle","=","acos","(","RGB1","'","*","RGB2","\/","(","norm","(","RGB1",")","*","norm","(","RGB2",")",")",")",";","angle","=","180","\/","pi","*","angle",";"]
code: def __repr__(self):
      return "AE"
  
imports: import math
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the AE obj's underlying member method code with example usage: obj.__repr__() and returns: str