Ice Floe Segmentation of MODIS imagery

In the segmentation output folder you will find:

• for each day of analysis:
  • YYYY-MM-DD-JD_terra_final.tif: the final georeferenced masked floes
  • YYYY-MM-DD-JD_terra.csv: the properties tables for the floes. see https://scikit-image.org/docs/stable/api/skimage.measure.html#skimage.measure.regionprops for a full description of each parameter. The columns are:
    • label: corresponding number in the .tif file
    • area (in number of pixels)
    • centroid-0: centroid of the floe (row)
    • centroid-1: centroid of the floe (column)
    • axis_major_length
    • axis_minor length
    • orientation: angle between 0th axis (rows) and major axis
    • perimeter: in pixel units
    • intensity mean: average red channel value of floe
• for each year: mask_values_YYYY.txt : text files with columns:
  • doy: day of year
  • ice area (pixels)
  • total area for analysis (not cloud or land mask)
  • sea ice concentration
• reproj_land.tif: the land mask

• df_all_withloc.csv: includes all floe properties from all years- same columns as individual days plus:
  • year
  • doy: julian day of year
  • perim_km (perimeter in km)
  • area_km (area in km^2)
  • circ: C = 4*pi *area / (perim^2)
  • lon_ps: polar stereographic x values epsg:3413
  • lat_ps: polar stereographic y values epsg:3413
  • lon: epsg:4326
  • lat: epsg:4326

outisde of the segmnetation output folder:

df_stats_all2.csv: a combination of all the mask value files with additional columns:

• floe area: total area of floes within the image
• floe count: total number of floes in the image