class_docstr: Collect image boundary information.
docstr: Get HRV (if not ROI) image boundaries from the ActualL15CoverageHRV information stored in the trailer.
docstr_tok: ["Get","HRV","(","if","not","ROI",")","image","boundaries","from","the","ActualL15CoverageHRV","information","stored","in","the","trailer","."]
code: def _get_hrv_actual_img_bounds(self):
      """Get HRV (if not ROI) image boundaries from the ActualL15CoverageHRV information stored in the trailer."""
      hrv_bounds = self._trailer["15TRAILER"]["ImageProductionStats"][
          "ActualL15CoverageHRV"
      ]
  
      img_bounds = {
          "south_bound": [],
          "north_bound": [],
          "east_bound": [],
          "west_bound": [],
      }
      for hrv_window in ["Lower", "Upper"]:
          img_bounds["south_bound"].append(
              hrv_bounds["%sSouthLineActual" % hrv_window]
          )
          img_bounds["north_bound"].append(
              hrv_bounds["%sNorthLineActual" % hrv_window]
          )
          img_bounds["east_bound"].append(
              hrv_bounds["%sEastColumnActual" % hrv_window]
          )
          img_bounds["west_bound"].append(
              hrv_bounds["%sWestColumnActual" % hrv_window]
          )
  
          # Data from the upper hrv window are only available in FES mode
          if not self._mda["is_full_disk"]:
              break
  
      return img_bounds
  
imports: import logging
  import warnings
  from datetime import datetime, timedelta
  import dask.array
  import numpy
  import xarray
  from pyresample import geometry
  from satpy._compat import cached_property
  from satpy.readers._geos_area import get_area_definition, get_geos_area_naming
  from satpy.readers.eum_base import get_service_mode, recarray2dict, time_cds_short
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.readers.seviri_base import CHANNEL_NAMES, HRV_NUM_COLUMNS, HRV_NUM_LINES, REPEAT_CYCLE_DURATION, SATNUM, VISIR_NUM_COLUMNS, VISIR_NUM_LINES, NoValidOrbitParams, OrbitPolynomialFinder, SEVIRICalibrationHandler, add_scanline_acq_time, calculate_area_extent, create_coef_dict, dec10216, get_cds_time, get_satpos, pad_data_horizontally, pad_data_vertically, round_nom_time
  from satpy.readers.seviri_l1b_native_hdr import DEFAULT_15_SECONDARY_PRODUCT_HEADER, GSDTRecords, get_native_header, native_trailer
  from satpy.readers.utils import reduce_mda
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 3 for calling the ImageBoundaries obj's underlying member method code with example usage: obj._get_hrv_actual_img_bounds() and returns: img_bounds