Shaded value = in the CV mean (shade deepens with cover) Gray italic = shown for comparison but left out of the CV mean: the gold standard (the reference value) and the manually annotated in CoralNet CoralNet benchmark annotations (reference values, not models), Coralscapes (not trusted), and any value that reuses the reference's own data n = frames behind the value — = not run or not applicable (see each region's notes) Site names and method names link out (new tab)

Coral Cover: Maldives #1 2016

13 sites · 230 photos

Transect column = the author's July 2016 PIT transects (after the 2016 bleaching), the headline at the seven transect sites. Elsewhere the headline is Claude or an earlier computer-vision value.

SiteDateHeadline (site page)ClaudeTransect survey (headline)DINOv3CoralSCOP
Little Sandy Bank2016-01-14–1931%transect21d,hn=4931gn=1023b17c,b
Raaeundi Reef2016-01-158.0%transect—8.0gn=524b19c,b
Veli2016-01-16fore reef 16% · lagoon 5.3%transect44d,hn=1216gn=831b39c,b
Stage2016-01-1728%transect—28gn=2023b38c,b
Anantara Dhigu house reef2016-01-1822%Claude22dn=44—a24b38c,b
Maafushi2016-01-1816%transect—16gn=621b40c,b
Gaagandufaruhuraa2016-01-2138%transect—38gn=17—e45cn=19
Anantara Kihavah house reef & Golden Wall2016-01-22–2517%CV mean——a15b19c,b
Kashidhoo Faru2016-01-2227%transect—27gn=13—e26cn=19
Baa Atoll site 82016-01-2345%Claude45dn=49—a—e—e
Baa Atoll site 92016-01-2439%Claude39d,fn=20—a—e—e
Four Seasons Landaa Giraavaru2016-01-2462%Claude62dn=38—a30b45c,b
Baa Atoll site 102016-01-2537%*Claude37d,fn=18—a—e—e
Notes for Maldives #1 2016 (14)
  • [a] No July 2016 transect at this site.
  • [b] DINOv3 / CoralSCOP = the folder-level runs behind the earlier two-method map headline (staged subset, not frame-matched to the Claude photos); comparison only, never averaged.
  • [c] CoralSCOP = per-frame sum of colony-mask area fractions (zero-filled; overlapping masks double-count), averaged over frames with an ok row. Area index, not a point count: denominator differs from any point-count reference. It is also unstable frame to frame (the same subject has scored 94.1% in one photo and 23.3% in another), and the mask sum overstates cover most on the healthiest reefs.
  • [d] Claude = blind 7-call point count on the EDITED photos (20 points per photo, (HC+BL)/(20 − WATER − FISH − OBST), unknown points kept in the denominator); value = the site's headline where Claude is the headline.
  • [e] Not recorded for this site.
  • [f] THIN SAMPLE (under 30 frames at this site; marked in the headline column only): indicative only.
  • [g] The author's HARP / Coral Reef CPR long-term monitoring PIT transects, July 2016 (after the bleaching): the site headline. n = transects, not photos. Veli: fore reef (cell) and lagoon shown separately.
  • [h] Comparison only at a transect site: January 2016 photos, BEFORE the 2016 bleaching - compare with the April 2016 transects on the site page, not the July headline.
  • Mean/Range: Mean ± SD and Range are over the CV cells that enter the mean (CoralNet where independent, DINOv3, CoralSCOP unedited/edited, Claude). Gold standard, frames manually annotated in CoralNet, Coralscapes and same-measurement cells are shown in gray italic but never averaged.
  • Site pages: one row per map pin, with the values its site page prints. Gaagandufaruhuraa and Kashidhoo Faru carry Anderson's July 2016 transect headline; Anantara Kihavah has no transect and no Claude photos and keeps its earlier computer-vision headline.
  • * The site's headline coral cover rests on only 10–19 reef-habitat photos; this estimate is less certain.
  • Headline (site page): the coral-cover figure the site's page, report card and map pop-up print, with its method; it is never averaged into the CV mean.
  • Methods: Claude (Anthropic); DINOv3 (Meta; paper; used here as the frozen backbone of the in-house classifier); Coralscapes v1 and v2 (EPFL-ECEO; dataset paper, code); CoralSCOP (Zheng et al., CVPR 2024); CoralNet.
  • Sites: names drop the region prefix (hover for the full name) and link to the site's CRD page, or to the regional summary page where the site has none. Date = survey date from the map pins (first–last visit); sites are listed earliest first, undated sites last.

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