Neural Radiance Fields
Neural Radiance Fields (NeRF) inovakazve yakazara 3D chiitiko kubva kune mashoma emapikicha akajairwa, ichikutendera iwe kubhururuka kamera kune-matsva maonero.
Pfupiso
It reframed 3D capture as training a tiny neural network rather than building a mesh.
Kudzika Kwakadzika
Yakaunzwa muna 2020 naMildenhall nevamwe vaaishanda navo, NeRF inochengeta chiitiko chose mukati mediki neural network (a multilayer perceptron). Tichipihwa iyo 3D poindi uye yekutarisa kutungamira, network inoburitsa iyo poindi ruvara uye kuti iri opaque sei. Kupa pixel, NeRF inopfura ray muchiitiko, samples inonongedza pairi, inobvunza network, uye inosanganisa mhedzisiro uchishandisa vhoriyamu kupa. Nekuti maitiro ese aya anosiyaniswa, network inodzidziswa nekuenzanisa yakashandurwa pixels kune chaiyo yekuisa mafoto uye kugadzirisa kusvika yaenderana. Mubairo unoshamisa wephotorealism, unosanganisira maonero-anotsamira mhedzisiro senge maratidziro uye kupenya kupenya kunoshanduka paunofamba. Izvo zvakaderera ndezvekuti chiitiko chega chega chinoda chayo kudzidziswa kumhanya, uye nzira yekutanga yainonoka kune zvese kudzidzisa uye kupa.
Technical Insight
NeRF inomiririra chiitiko sechinoenderera 5D basa: isa chinzvimbo (x, y, z) pamwe negwara rekutarisa (makona maviri), uye iyo MLP inodzosa RGB ruvara uye vhoriyamu density. Chinhu chakakosha ndeye postal encoding, iyo mepu inoronga kuburikidza nepamusoro-frequency sine uye cosine mabasa kuitira kuti network itore zvakapinza pane kuburitsa blurry kubuda. Kupa kunobatanidza ruvara uye kuwanda pamwe chete nemwaranzi yega yega kamera, kurema padyo, mamwe maopaque samples zvakanyanya zvakanyanya, chaizvo masvomhu echinyakare vhoriyamu rendering akadzidziswa.
Strategic Impact
Kumhanya uye chiyero
Visual AI inogona kuita otomatiki yekuongorora, yekuona, uye yekumaka mabasa pachiyero.
Vaka sarudzo
Zvikwata zvekugadzira zvinogona prototype pfungwa nekukurumidza nekudzokororwa kwemaoko mashoma.
Team uye workflow
Mashandisirwo anogona kushandisa masaini emifananidzo nemavhidhiyo ayo aimbove akaoma kugadzirisa.
Ramangwana reNeural Radiance Minda
Tsvagiridzo yeNeRF yakaputika mushure me2020, nekutevera senge Instant-NGP yekucheka kudzidziswa kubva pamaawa kuenda kumasekonzi uchishandisa hash-grid encodings, uye Mip-NeRF inovandudza hunhu pachiyero. Munda uri kuwedzera kubatanidzwa kana kupikiswa neGaussian Splatting, iyo inopa nekukurumidza. Tarisira nzira dzakatorwa neNeRF mumepu, e-commerce chigadzirwa maonero, mafirimu ekuona maitiro, uye AR/VR, pamwe nekukura kwemaNeRF ane simba anobata zviitiko zvinofamba uye "mu-musango" inotorwa nekuchinja kwemwenje. Iwo madingindira makuru kumhanya, kurongeka, uye kutora mifananidzo kubva kune mashoma, messier mafoto.
Real-World Implementation
Kushandura vhidhiyo yefoni yechinhu kuita 3D maonero iwe unogona kutenderera pakutenga online
Kuvakazve nzvimbo chaidzo senge photorealistic backdrops yefirimu uye zvinoonekwa maitiro
Kuvaka inonyudza 3D zviratidziro zvezvakaita uye augmented real experiences
Kuchengetedza nedhijitari nzvimbo dzekugara nhaka uye zvigadzirwa kubva kumaseti emifananidzo
Njodzi & Guardrails
Kodzero dzemifananidzo uye kubvumirwa kunogona kuve njodzi dzepamutemo kana provenance isina kujeka.
Kuita kwemuenzaniso kunogona kusiyanisa kupenya, huwandu hwevanhu, uye nharaunda.
Manyepo enhema anogona kusacherechedzwa kunze kwekunge zvikumbaridzo zvekuvimba zvikatariswa.
Implementation Roadmap
Tsanangura maitiro ekugamuchirwa echokwadi, kurangarira, uye mutengo wekukanganisa.
Edzai nedata rinoenderana nemamiriro chaiwo ekugadzira.
Wedzera ongororo yemunhu kune yakaderera-kusavimbika kana yakakwirira-inokanganisa kufanotaura.
Tevera modhi kudonha uye simbisa mushure mekuchinja kwekamera kana dataset.
Ramba Uchiongorora
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Gaidhi rinotevera
Mip-NeRF uye Anti-Aliased Radiance Minda
Mibvunzo inowanzo bvunzwa
What is Neural Radiance Fields?
Neural Radiance Fields (NeRF) inovakazve yakazara 3D chiitiko kubva kune mashoma emapikicha akajairwa, ichikutendera iwe kubhururuka kamera kune-matsva maonero. Yakagadziridza 3D kubatwa sekudzidzisa diki neural network pane kuvaka mesh.
Ndeipi chinangwa chikuru cheNeural Radiance Field?
NeRF inovaka inomiririra 3D kubva kune seti yemifananidzo, ichigonesa mafotorealistic kupa kubva pamaonero asiri mumifananidzo yekutanga.
Chii chinoitwa neNeRF neural network inobuda kune yakapihwa yekupinza?
Kune 3D chinzvimbo uye gwara rekuona, iyo MLP inodzosera iyo ruvara uye density (opacity) panguva iyoyo.
Ndezvipi zvinopinza kune NeRF's 5D basa?
NeRF inotora nzvimbo ye 3D (x, y, z) uye nzira yekutarisa (makona maviri), inokwana mashanu ekuisa.
NeRF inoshandura sei zvinobuda netiweki kuita yekupedzisira pixel color?
NeRF samples inonongedza pamwe nemwaranzi yega yega uye inobatanidza ruvara rwavo rwakayerwa nehuremu, iyo classical vhoriyamu inopa equation yakaitwa kuti isiyane.
Nei NeRF ichishandisa positional encoding pane ekuisa marongero?
Mamepu anoronga kuburikidza neakakwira-frequency sine/cosine mabasa anoita kuti MLP imiririre zvakanakisa pane mhedzisiro mhedzisiro.