Umgomo wobuchwepheshe bokuthunga isithombe sekhamera ebuka izinto eziningi

I Amakamelo amaningi ubuchwepheshe bokuthunga izithombe buhlose ukuhlanganisa izithombe ezithathwe emibonweni eyahlukene zibe inkambu ebanzi ephelele, ehlangene. Umgomo owumongo ubandakanya lezi zinyathelo ezibalulekile ezilandelayo:

Amakhamera akuhlelo lwamakhamera amaningi acushwa ngokuhambisana ukuze athwebule izithombe zezingxenye ezihlukene zekhamera ngesikhathi esisodwa. Lokhu kudinga ukuvumelanisa kwewashi okunembile phakathi kwamakhamera ukuze kuqinisekiswe ukuvumelana kwesikhashana kwezithombe ezithwetshuliwe, ukuvimbela ukungaboni ngaso linye noma ukufiphala kwezinto eziguqukayo endaweni ngenxa yokuhluka kwesikhathi ekuthwebuleni.

Esithombeni ngasinye esithwetshulwe amakhamera, ama-algorithms okukhishwa kwesici asetshenziselwa ukukhomba izici ezivelele ku-. Ama-algorithms okukhishwa kwesici esivamile ahlanganisa i-SIFT (I-Scale-Invariant Feature Transform) kanye ne-SURF (Izici Eziqinile Ezisheshisiwe). Lawa ma-algorithms angakwazi ukuhlonza ngokunembile isici esinjengamakhona namaphethelo esithombeni ngaphansi kwezinguquko ezihlukene zokukhanya, isikali, nokuzungezisa, okuhlinzeka ngesisekelo sokumataniswa kwesithombe okulandelayo. Isibonelo, i-SIFT yakha ipiramidi yomehluko we-Gaussian ukuze ithole amaphuzu aphezulu esikhaleni esinezilinganiso eziningi, inikeze isiqondiso nezichazi kulawa maphuzu aphezulu, iwenze angaguquki esikalini nasekujikelezweni.

Amaphoyinti esici ezithombeni ezivela kumakhamera ahlukene afaniswa ngokubili ukuze kunqunywe ukuxhumana kwawo kwendawo. Lesi sinyathelo ngokuvamile sisebenzisa izindlela zokufanisa ezisuselwe encazelweni, njengokulinganisa ukufana kwezichazi zesici ezimbili kusetshenziswa ibanga le-Euclidean noma ukufana kwe-cosine. Uma ukufana kudlula umkhawulo obekiwe, athathwa njengokufana. Phakathi nenqubo, kuyadingeka futhi ukuthi ucabangele amathuba okufana okungamanga futhi kususwe amapheya angamaphutha kusetshenziswa ama-algorithms afana ne-RANSAC (Isivumelwano Sesampula Engahleliwe) ukuze kuqinisekiswe ukufana. Isibonelo, kusetshenziswa ibanga le-Euclidean, ibanga lomugqa oqondile phakathi kwamavekhtha esici esichaza izici esikhaleni se-vector liyabalwa, nelincane elibonisa ukufana okuphezulu.

Ngemva kokuqedela ukufanisa iphoyinti lesici, ubudlelwano bokuguqulwa kwejiyomethri phakathi kwezithombe bubalwa ngokusekelwe kumaphoyinti amaphoyinti ahambisanayo. Amamodeli ajwayelekile ahlanganisa ukuguqulwa kwe-affine kanye nokuguqulwa kombono. Uma isigameko sicishe sihleleke, ukuguqulwa kwe-affine kungachaza ubudlelwano bemephu phakathi kwezithombe; uma isigameko sinokujula, ukuguqulwa kombono kufaneleka kakhulu. Amapharamitha emodeli yokuguqulwa axazululwa kusetshenziswa ama-algorithms okuthuthukisa afana nezikwele ezincane, kuncishiswe iphutha lendawo yamaphoyinti afanisiwe ngemuva kwalokho. Isibonelo, ekuguqulweni kombono, isistimu yezibalo yakhiwa kusetshenziswa amaphoyinti ahambisanayo aziwayo ukuze kuxazululwe amapharamitha angu-8 amele ukuguqulwa kombono, ngaleyo ndlela kube nobudlelwane obunembile bemephu phakathi kwezithombe.

Ngokusekelwe kumodeli yoguquko yekhompyutha, izithombe ezivela kumakhamera ahlukahlukene zihlanganiswa ndawonye. Phakathi nenqubo yokuhlanganisa, izici ezifana nesithombe nokugqama ziyacatshangelwa, futhi kucatshangelwa ama-algorithms okuhlanganisa afanelekile, njengesilinganiso esinesisindo kanye ne-Laplacian pyramid fusion, asetshenziswa ukuze kuqinisekiswe ukuthi ukuguqulwa phakathi kwezithombe kungokwemvelo ngaphandle kwemithungo ebonakalayo. Indlela yokukala enesisindo inika izisindo ezihlukene kuphikseli ngayinye ngokusekelwe endaweni egqagqene nendawo yephikseli, bese ihlanganisa amanani ephikseli ekwedluleni ngezisindo ukuze kuzuzwe izinguquko ezibushelelezi. Indlela yokuhlanganisa iphiramidi ye-Laplacian iqala ngokubola isithombe sibe izendlalelo ezihlukene zephiramidi, bese ihlanganisa isendlalelo ngasinye ngokuhlukana, ekugcineni yakha kabusha isithombe esihlanganisiwe esiphelele.

Ngochungechunge olungenhla lwezinyathelo ezinembayo neziyinkimbinkimbi, ubuchwepheshe bokuthunga isithombe sekhamera ebuka izinto eziningi bungaguqula izithombe ezinemibono eminingi zibe izithombe ze-panoramic, bunikeze ukwesekwa okubonakalayo okunamandla emikhakheni ehlukahlukene efana nokugadwa kokuphepha, into engekho ngokoqobo, nokushayela ukuzimela.