class_docstr: Base Dataset class for Image Segmentation datasets. Sub-classes must define `ignore_label`
  and `background_idx` variable.
  
  Args:
      opts: Command-line arguments
class_docstr_tok: ["Base","Dataset","class","for","Image","Segmentation","datasets",".","Sub-classes","must","define","`","ignore_label","`","and","`","background_idx","`","variable",".","Args",":","opts",":","Command-line","arguments"]
docstr: Data augmentation during validation.
  
  Order of transformation is Resize, ToTensor
  
  Args:
      size: Size for resizing the input image. Expected to be a tuple (height, width)
  
  Returns:
      An instance of `data.transforms.image_pil.BaseTransformation.`
docstr_tok: ["Data","augmentation","during","validation",".","Order","of","transformation","is","Resize",",","ToTensor","Args",":","size",":","Size","for","resizing","the","input","image",".","Expected","to","be","a","tuple","(","height",",","width",")","Returns",":","An","instance","of","`","data.transforms.image_pil.BaseTransformation.","`"]
code: def _validation_transforms(
      self, size: Tuple[int, int], *args, **kwargs
  ) -> T.BaseTransformation:
      """Data augmentation during validation.
  
      Order of transformation is Resize, ToTensor
  
      Args:
          size: Size for resizing the input image. Expected to be a tuple (height, width)
  
      Returns:
          An instance of `data.transforms.image_pil.BaseTransformation.`
      """
      aug_list = [T.Resize(opts=self.opts), T.ToTensor(opts=self.opts)]
      return Compose(opts=self.opts, img_transforms=aug_list)
  
imports: import argparse
  import os
  from typing import List, Mapping, Optional, Tuple, Union
  import numpy
  import torch
  from PIL import Image
  from torch import Tensor
  from data.datasets.dataset_base import BaseImageDataset
  from data.transforms import image_pil
  from data.transforms.common import Compose
  from utils import logger
  from utils.color_map import Colormap
label_desc: Use image node_id 5 for calling the BaseImageSegmentationDataset obj's underlying member method code with example usage: obj._validation_transforms(size) and returns: Compose