Summary¶

The joint_instrument_log was used to partition groups of flight lines into different chunks that should be placed 'in front of' or 'behind' other chunks; this process was done manually, as a combination of the weather during observations, flight conditions, flightbox design, and the time the flight was taken. As such, it is inherrently subjective - the goal, however, was to minimize the influence of bad condition on the mosaic (those with partial or complete cloudcover), and keep the overal scene as continuous as possible (IE, by keep overlapping chunks closer together in time when possible). Within a particular chunk of lines, individual lines were mosaiced by nearest-neighbor reasambpling to a common, 5 m GSD grid, using the minimum phase angle (the direct angle between the sun, target, and sensor) as the sorting criteria.

Availability:¶

  • Base directory
  • Reference grid with links - the grid is static, but the links inside the grid will be updated through time with the latest versions of data.
  • Mosaic v01, with subdirectories for:
    • glt - 3 band file telling x-location, y-location, file index (1-based) of the source file for the mosaic (referenced the master scid list)
    • rfl - reflectance data in envi format
    • obs - observation data in ENVI format
    • ql_scaled - scaled uint8 quicklook from reflectance
    • ql - 32 bit float quicklook from reflectance

Known Issues with v01¶

  • Flight line ang20231125t093433 chaned to ang20231125t093445, which will fill in the eastern edge of
  • Flight line ang20231123t120721 (part of ''), missing - find out why and fix

Flight lines:

  • ang20231113t120518
  • ang20231113t121525
  • ang20231113t122602
  • ang20231113t123605
  • ang20231113t124643
  • ang20231113t125450

Are missing from the mosaic, because the timing of the actual flight lines is inconsistent with the log.

To condsider:

  • ang20231112t121622 (transit to false bay), part of boulders_redtide

  • ang20231026t103209

  • inclusion of sthelena lines? Different orientation & cloud level, better coverage

  • inclusion of ang20231108t112840 from swartberg_cloudy, to fill in the horizontal mosaic

Would benefit from:

  • cloud labeling and filtering