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 #2 2017

25 sites · 684 photos

No gold standard.

SiteDateHeadline (site page)ClaudeDINOv3CoralSCOP
Kurumba Faru (checkout dive)2017-05-13——15a22b,a
Back Faru2017-05-14–216.4%Claude6.4cn=7414a15b,a
Bodu Hithi Thila2017-05-14–158.7%Claude8.7cn=3015a16b,a
Feydoo Wall2017-05-15——24a21b,a
Georgia's Reef2017-05-1522%Claude22cn=3417a23b,a
Miyaro Faru2017-05-1624%Claude24c,dn=2017a23b,a
Vaadhoo Caves2017-05-164.7%*Claude4.7c,dn=187.3a15b,a
Veligandu2017-05-1617%*Claude17c,dn=1813a22b,a
Ghuli Faru2017-05-175.4%*Claude5.4c,dn=1710a13b,a
Miyaru Bay2017-05-17–1819%*Claude19c,dn=1915a15b,a
Big Sand Bank2017-05-1810%Claude10c,dn=2116a20b,a
Kuda Giri Wreck2017-05-18–2217%Claude17cn=5618a21b,a
Hodeli Bodu Giri2017-05-1934%Claude34cn=3421a25b,a
Kandooma Thila2017-05-19–226.3%*Claude6.3c,dn=1813a7.3b,a
Fish Tank2017-05-21——11a4.9b,a
Lankan Faru2017-05-21–2213%Claude13c,dn=209.2a22b,a
Camel Point2017-05-2321%Claude21cn=7623a26b,a
Lohosfushi Corner2017-05-2312%Claude12c,dn=2414a16b,a
Dhidhoo Beyru2017-05-2420%Claude20cn=42——
Dhigga Thila2017-05-248.4%Claude8.4c,dn=2522a29b,a
Lux Beyru2017-05-2421%Claude21c,dn=26——
Dhega Thila2017-05-2520%Claude20cn=4525a21b,a
Fesdhoo wreck2017-05-252.1%Claude2.1c,dn=2015a14b,a
Moofushi Kandu2017-05-257.4%Claude7.4c,dn=2421a11b,a
Fish House (Fish Head)2017-05-263.0%Claude3.0c,dn=2312a6.3b,a
Notes for Maldives #2 2017 (10)
  • [a] 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.
  • [b] 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.
  • [c] 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.
  • [d] THIN SAMPLE (under 30 frames at this site; marked in the headline column only): indicative only.
  • 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. Big Sand Bank was also surveyed in January 2016: this row is the May 2017 survey, and its page also gives the January 2016 value. Checkout dive, Feydoo Wall, and Fish Tank have too few photos (under 10) for a Claude value.
  • * 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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