Isevisi
Isistimu yokuthwebula ukunyakaza kwe-3Direkhodi eliphelele lokunyakaza kwento kumishini yasemkhathini enezinhlangothi ezintathu, ngokomgomo wezinhlobo ezahlukene zokuthwebula ukunyakaza ngomshini, ukuthwebula ukunyakaza kwe-acoustic, ukuthwebula ukunyakaza kwe-electromagnetic,ukuthwebula ukunyakaza kwe-optical, kanye nokuthwebula ukunyakaza kwe-inertial. Imishini yamanje yokuthwebula enyakazayo enezinhlangothi ezintathu emakethe iwubuchwepheshe obubili bakamuva.
Amanye amasu okukhiqiza ajwayelekile ahlanganisa ubuchwepheshe bokuskena izithombe, i-alchemy, ukulingisa, njll.
Ukuthwebula ukunyakaza okubonakalayo. Iningi elivamileukuthwebula ukunyakaza kwe-opticalngokusekelwe ezimisweni zombono wekhompuyutha zingahlukaniswa zibe iphoyinti elisekelwe ku-Marker kanye nephuzu elingasekelwe kuma-Marker. Ukuthwebula ukunyakaza okusekelwe endaweni yomaka kudinga amaphuzu akhanyayo, ngokuvamile aziwa ngokuthi amaphoyinti omaka, ukuthi anamathiselwe ezindaweni ezibalulekile zento eqondiwe, futhi kusebenzisa ikhamera ye-infrared enesivinini esiphezulu ukuze ithwebule umkhondo wamaphoyinti akhanyayo entweni eqondiwe, ngaleyo ndlela ibonise ukunyakaza kwento eqondiwe emkhathini. Ngokwethiyori, ngephuzu elithile emkhathini, inqobo nje uma lingabonwa amakhamera amabili ngesikhathi esisodwa, indawo yephuzu emkhathini ngalo mzuzu inganqunywa ngokusekelwe ezithombeni nemingcele yekhamera ethathwe amakhamera amabili ngesikhathi esisodwa.
Isibonelo, ukuze umzimba womuntu uthwebule ukunyakaza, ngokuvamile kuyadingeka ukuthi unamathisele amabhola akhanyayo kuphawu ngalunye lwejoyinti nethambo lomzimba womuntu, futhi uthwebule umzila wokunyakaza wamaphuzu akhanyayo ngamakhamera we-infrared high-speed, bese kamuva uwahlaziye futhi uwacubungule ukuze ubuyisele ukunyakaza komzimba womuntu emkhathini futhi uhlonze ngokuzenzakalelayo ukuma komuntu.
Eminyakeni yamuva, ngokuthuthukiswa kwesayensi yekhompiyutha, enye indlela yephuzu elingelona i-Marker ikhula ngokushesha, futhi le ndlela isebenzisa ngokuyinhloko ukuqashelwa kwesithombe nobuchwepheshe bokuhlaziya ukuhlaziya izithombe ezithathwe yikhompyutha ngokuqondile. Le nqubo iyona engaphansi kakhulu ekuphazamisekeni kwemvelo, futhi okuhlukile njengokukhanya, ingemuva, nokuvala kungase kube nomthelela omkhulu kumphumela wokuthwebula.
I-Inertial Motion Capture
Olunye uhlelo oluvame kakhulu lokuthwebula ukunyakaza lusekelwe kuzinzwa ezingenayo (inertial Measurement Unit, IMU) ukuthwebula ukunyakaza, okuyiphakheji ehlanganisiwe ye-chip ibe amamojula amancane aboshwe ezingxenyeni ezihlukahlukene zomzimba, ukunyakaza kwendawo yesixhumanisi somuntu esirekhodwe yi-chip, futhi kamuva ihlaziywa ngama-algorithms ekhompiyutha ngaleyo ndlela aguqulelwe idatha yokunyakaza komuntu.
Ngenxa yokuthi ukuthwebula okune-inertial kugxilwe ikakhulukazi ku-link point inertial sensor (IMU), ngokuhamba kwenzwa ukuze kubalwe ukuguqulwa kwendawo, ngakho ukuthwebula okune-inertial akuthintwa kalula imvelo yangaphandle. Kodwa-ke, ukunemba kokuthwebula kwe-inertial akukuhle njengokuthwebula optical uma kuqhathaniswa imiphumela.
