@article{fdi:010083329,
  title = {{S}hallow water bathymetry retrieval using a band-optimization iterative approach : application to {N}ew {C}aledonia coral reef lagoons using {S}entinel-2 data},
  author = {{A}mrari, {S}. and {B}ourassin, {E}. and {A}ndr{\'e}fou{\¨e}t, {S}erge and {S}oulard, {B}. and {L}emonnier, {H}. and {L}e {G}endre, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o achieve high accuracy bathymetry retrieval using remote sensing images with robust performance in a 0 to 25 m-deep lagoon with sharp bottom depth variations, a new {I}terative {M}ultiple {B}and {R}atio ({IMBR}) algorithm is tested against known {M}ultiple {B}and {R}atio ({MBR}) and {S}ingle {B}and {R}atio ({SBR}) algorithms. {T}he test was conducted using the five multispectral bands, at 10 to 60 m resolution, of a {S}entinel-2 image of the 25 km(2) {P}oe lagoon, a {UNESCO} {W}orld {H}eritage {A}rea. {T}he {IMBR} approach requires training datasets for the definitions of depth threshold at which optimal band ratios vary. {IMBR} achieved accuracy, quantified with an original block cross-validation procedure across the entire depth range reached a mean absolute error of 46.0 cm. {I}t compares very favorably against {MBR} (78.3 cm) and the various {SBR} results (188-254 cm). {T}he method is suitable for generalization to other sites pending a minimal ground-truth dataset crossing all the depth range being available. {W}e stress that different users may need different precisions and can use {MBR} or {SBR} algorithms for their applications. {F}or the hydrodynamic modelling applications that are developing in {N}ew {C}aledonia, the {IMBR} solutions applied to {S}entinel imagery are optimal.},
  keywords = {satellite derived bathymetry ; rugose lagoon ; adaptive iterative model ; band ratio ; {UNESCO} {W}orld {H}eritage {A}rea ; multispectral image ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{R}emote {S}ensing},
  volume = {13},
  numero = {20},
  pages = {4108 [20 ]},
  year = {2021},
  DOI = {10.3390/rs13204108},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083329},
}