I-LandViewer - Manje ukutholakala kwezinguquko kusebenza kusiphequluli

Ukusetshenziswa okubaluleke kakhulu kwedatha yokubona okude kuyisiqhathaniso sezithombe ezivela endaweni ethile, ezithathwe ngezikhathi ezehlukene ukukhomba izinguquko ezenzeka lapha. Njengoba inqwaba yezithombe ze-satellites njengamanje zivulekile, isikhathi esingaphezu kwesikhathi eside, ukutholakala kwezinguquko kwezinguquko kungathatha isikhathi eside futhi cishe kungabonakali. I-EOS Data Analytics idale ithuluzi elizenzakalelayo ukutholwa kwezinguquko kwimikhiqizo yayo ye-flag, i-LandViewer, ephakathi kwamathuluzi amafu afanele kakhulu wokusesha nokuhlaziywa kwezithombe ze-satellite emakethe yamanje.

Ngokungafani nezindlela ezibandakanya amanethiwekhi we-neural ukuthi thola izinguquko kuzici ezikhishwe ngaphambilini, ukuguqulwa kokuguquguquka kwe-algorithm okusetshenziswe ngu EOS usa isu elisekelwa ngamaphikseli, okusho ukuthi izinguquko phakathi kwezithombe ezimbili ze-multiband raster zibalwa ngezibalo ngokususa amanani we-pixel ngosuku olulodwa ngamanani we-pixel wezixhumanisi ezifanayo zenye idethi. Lesi sici esisha sesiginesha senzelwe ukuzenzekela umsebenzi wokuthola izinguquko nokuletha imiphumela enembile ngezinyathelo ezimbalwa nangengxenyana yesikhathi esidingekayo kuqhathaniswa ne-ArcGIS, QGIS noma enye isofthiwe yokucubungula isithombe se-GIS.

I-interface yokuthola ukushintsha. Izithombe zogwini lomuzi waseBeirut zikhethiwe ukukhomba ukuthuthukiswa kweminyaka yamuva.

Ukuthola izinguquko edolobheni laseBeirut

Ububanzi obungenakubalwa kwezicelo: kusuka kwezolimo kuya ekuqaphelweni kwemvelo.

Enye yezinhloso eziyinhloko ezakhiwe yithimba le-EOS kwakuzokwenza inqubo yokuthola ushintsho oluyinkimbinkimbi yedatha ekude yokubona ifinyeleleke futhi ilula kubasebenzisi abangenalwazi kusuka kwizimboni ezingezona ze-GIS. Ngethuluzi lokuthola ushintsho lwe-LandViewer, abalimi bangakwazi ukubona ngokushesha izindawo ezimele emasimini abo ngesichotho, isiphepho noma isikhukhula. Ukuphathwa kwehlathi, ukutholwa kwezinguquko esithombeni se-satellites, kuyoba usizo ekulinganisweni kwezindawo ezishisiwe, ngemuva komlilo wehlathi nokubona ukungena emthethweni ngokungena emthethweni noma ukuhlasela kwamahlathi. Ukuqaphela izinga nesilinganiso sokuguquka kwesimo sezulu (njengokungcolisa i-polar ice, ukungcola kwamanzi kanye namanzi, ukulahlekelwa kwemvelo yemvelo ngenxa yokwehla kwemigwaqo yasemadolobheni) kuwumsebenzi ososayensi bezemvelo abenza njalo, futhi manje bangakwenza esimweni semizuzu. Ngokutadisha umehluko phakathi kwesikhathi esedlule nesamanje esebenzisa iminyaka yedatha yesathelayithi ngeThuluzi lokuThola ukuguqulwa kwe-LandViewer, zonke lezi zimboni zingabuye zibikezele izinguquko zesikhathi esizayo.

Amacala amakhulu okusetshenziswa okutholakala kwezinguquko: ukulimala kwezikhukhula kanye nokuhlwanyelwa kwamahlathi

Isithombe sidinga amazwi ayizinkulungwane, futhi amandla okuthola ukuguqulwa ngezithombe ze-satellite ku I-LandViewer Zingahle ziboniswe kangcono ngezibonelo zangempela zokuphila.

Amahlathi asesigcwele ingxenye yesithathu yomhlaba ayanyamalala ngesilinganiso esesabekayo, ikakhulukazi ngenxa yemisebenzi yabantu njengezolimo, izimayini, izinkomo zezilwane, ukugawula kanye nezici zemvelo ezifana nomlilo wehlathi. Esikhundleni sokuqhuba ucwaningo olunzulu, ezindaweni ezinamahektare ehlathi, uchwepheshe wehlathi angaqapha njalo ukuphepha kwamahlathi anezimboni ze-satellite kanye nokuthola ngokuzenzakalelayo izinguquko ngokusekelwe ku-NDVI (I-NDVI (Normalized Difference Vegetation Index). .

Isebenza kanjani? I-NDVI iyindlela eyaziwayo yokunquma impilo yemifino. Ngokuqhathanisa umfanekiso wesathelayithi wehlathi elihleliwe, nesithombe esitholakale ngemva nje kokuba imithi igawulwe, i-LandViewer izobona izinguquko futhi idale isithombe sokuhluka okugqamisa amaphuzu okubhuka kwezindawo, abasebenzisi bangalanda imiphumela ku-.jpg, .png noma .fomethi. Isembozo sehlathi esasinda sizoba nemigomo emihle, kanti izindawo ezihlanjululwe ziyoba nombi futhi zizoboniswa ngamathoni abomvu okukhombisa ukuthi akukho zitshalo ezikhona.

Isithombe esivela esibonelweni seMadagascar phakathi kwe-2016 ne-2018; okwenziwe emifanekiso yesathelayithi emibili ye-Sentinel-2

Esinye isisindo sokusetshenziswa okubanzi kokuthola izinguquko kuyoba ukuhlolwa kokulimala kwezamanzi, okuyinto enesithakazelo kakhulu kubalimi kanye nezinkampani zomshuwalense. Isikhathi ngasinye lapho izikhukhula zithatha umonakalo omkhulu ekuvuneni kwazo, umonakalo ungahle uhlolwe futhi ulinganiswe ngokushesha ngosizo lwama-NDVI olususelwa ekuguqulweni kokuguqulwa kwamasu.

Imiphumela yesikhala se-Sentinel-2 siyashintsha ukutholakala: izindawo ezibomvu nezama-orange zimelela ingxenye encane yensimu; izinsimu ezungezile zihlaza, okusho ukuthi bagweme umonakalo. Umkhumbi waseCalifornia, February ka-2017.

Indlela yokwenza ukutholakala kokuguqulwa ku-LandViewer

Kunezindlela ezimbili zokuqala ithuluzi bese uqala ukuthola umehluko ezithombeni zesiphuphutheki eziningi: ngokuchofoza kwisithonjana semenyu kwesokudla "Amathuluzi Okuhlaziya" noma kuslayidi esiqhathaniswa, noma yikuphi okulula. Okwamanje, ukutholwa kokushintsha kwenziwa kuphela kwidatha ye-satellite ye-optical (passive); Ukwengezwa kwama-algorithms wedatha yokuzwa okukude okuhleliwe kuhlelwe izibuyekezo ezizayo.

Ukuze uthole imininingwane eyengeziwe, funda lo mhlahlandlela kusuka ku- shintsha ithuluzi lokuthola of LandViewer. O qala ukuhlola amakhono akamuva I-LandViewer ngokwakho

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