ml/quick_label.py

   1 #!/usr/bin/env python3
   2
   3 import glob
   4 import logging
   5 import os
   6 from typing import Callable, List, NamedTuple, Optional, Set
   7 import warnings
   8
   9 import argparse_utils
  10 import config
  11
  12 logger = logging.getLogger(__name__)
  13 parser = config.add_commandline_args(
  14     f"ML Quick Labeler ({__file__})",
  15     "Args related to quick labeling of ML training data",
  16 )
  17 parser.add_argument(
  18     "--ml_quick_label_skip_list_path",
  19     default="./qlabel_skip_list.txt",
  20     metavar="FILENAME",
  21     type=argparse_utils.valid_filename,
  22     help="Path to file in which to store already labeled data.",
  23 )
  24 parser.add_argument(
  25     "--ml_quick_label_use_skip_lists",
  26     default=True,
  27     action=argparse_utils.ActionNoYes,
  28     help='Should we use a skip list file to speed up execution?',
  29 )
  30 parser.add_argument(
  31     "--ml_quick_label_overwrite_labels",
  32     default=False,
  33     action=argparse_utils.ActionNoYes,
  34     help='Enable overwriting existing labels; default is to not relabel.',
  35 )
  36
  37
  38 class InputSpec(NamedTuple):
  39     image_file_glob: Optional[str]
  40     image_file_prepopulated_list: Optional[List[str]]
  41     image_file_to_features_file: Callable[[str], str]
  42     label: str
  43     valid_keystrokes: List[str]
  44     prompt: str
  45     keystroke_to_label: Callable[[str], str]
  46
  47
  48 def read_skip_list() -> Set[str]:
  49     ret: Set[str] = set()
  50     if config.config['ml_quick_label_use_skip_lists']:
  51         quick_skip_file = config.config['ml_quick_label_skip_list_path']
  52         if os.path.exists(quick_skip_file):
  53             with open(quick_skip_file, 'r') as f:
  54                 lines = f.readlines()
  55             for line in lines:
  56                 line = line[:-1]
  57                 line.strip()
  58                 ret.add(line)
  59         logger.debug(f'Read {quick_skip_file} and found {len(ret)} entries.')
  60     return ret
  61
  62
  63 def write_skip_list(skip_list) -> None:
  64     if config.config['ml_quick_label_use_skip_lists']:
  65         quick_skip_file = config.config['ml_quick_label_skip_list_path']
  66         with open(quick_skip_file, 'w') as f:
  67             for filename in skip_list:
  68                 filename = filename.strip()
  69                 if len(filename) > 0:
  70                     f.write(f'{filename}\n')
  71         logger.debug(f'Updated {quick_skip_file}')
  72
  73
  74 def label(in_spec: InputSpec) -> None:
  75     import input_utils
  76
  77     images = []
  78     if in_spec.image_file_glob is not None:
  79         images += glob.glob(in_spec.image_file_glob)
  80     elif in_spec.image_file_prepopulated_list is not None:
  81         images += in_spec.image_file_prepopulated_list
  82     else:
  83         raise ValueError(
  84             'One of image_file_glob or image_file_prepopulated_list is required'
  85         )
  86
  87     skip_list = read_skip_list()
  88     for image in images:
  89         if image in skip_list:
  90             logger.debug(f'Skipping {image} because of the skip list')
  91             continue
  92         features = in_spec.image_file_to_features_file(image)
  93         if features is None or not os.path.exists(features):
  94             msg = f'File {image} yielded file {features} which does not exist, SKIPPING.'
  95             logger.warning(msg)
  96             warnings.warn(msg)
  97             continue
  98
  99         # Render features and image.
 100         filtered_lines = []
 101         with open(features, "r") as f:
 102             lines = f.readlines()
 103         saw_label = False
 104         for line in lines:
 105             line = line[:-1]
 106             if in_spec.label not in line:
 107                 filtered_lines.append(line)
 108             else:
 109                 saw_label = True
 110
 111         if not saw_label or config.config['ml_quick_label_overwrite_labels']:
 112             logger.info(features)
 113             os.system(f'xv {image} &')
 114             keystroke = input_utils.single_keystroke_response(
 115                 in_spec.valid_keystrokes,
 116                 prompt=in_spec.prompt,
 117             )
 118             os.system('killall xv')
 119             label_value = in_spec.keystroke_to_label(keystroke)
 120             filtered_lines.append(f"{in_spec.label}: {label_value}\n")
 121             with open(features, 'w') as f:
 122                 f.writelines("%s\n" % line for line in filtered_lines)
 123             skip_list.add(image)
 124     write_skip_list(skip_list)