Mip-NeRF uye Anti-Aliased Radiance Minda
Mip-NeRF inogadzirisa zvakasvibirira, zvimisikidzo zvinonetsa iyo yekutanga NeRF paunopa zviratidziro pamadaro akasiyana kana sarudzo.
Pfupiso
It does this by tracing cones instead of infinitely thin rays, making 3D scene rendering both sharper and faster to train.
Kudzika Kwakadzika
Iyo yekutanga NeRF inosample chiitiko pamwe nemwaranzi yakatetepa, imwe poindi panguva, uye inodyisa yega yega 3D chinzvimbo muneural network. Dambudziko: poindi imwe chete inofuratira kuti yakawanda sei yechiitiko pixel inovhara. Pixel padyo nekamera inoona dunhu diki; iyo pixel iri kure inoona yakakura. Kuvatora zvakafanana kunokonzeresa kushamwaridzana - kupenya uye jaggies paunenge uchikwevera kana kufamba. Mip-NeRF (Barron et al., 2021) inotsiva ray yega yega nekoni uye inoipatsanura kuita conical frustums. Panzvimbo yekukodha poindi, inoisa nharaunda mukati meiyo frustum yega yega ichishandisa yakasanganiswa yekumisikidza encoding (IPE), ichienzanisa vhoriyamu neGaussian. Izvi zvinobvumira imwechete multiscale network kupa chero sarudzo zvakachena, kucheka kukanganisa uye nguva yekudzidziswa zvakanyanya.
Technical Insight
Iyo kiyi yehunyengeri ndeye yakabatanidzwa positional encoding. Standard NeRF inomepu poindi kuburikidza nesine uye cosine inoshanda pane akawanda mafrequency. Mip-NeRF pachinzvimbo inofungidzira iyo conical frustum seyakawanda Gaussian uye inoverengera kukosha kunotarisirwa kweaya sinusoids pamusoro peGaussian iyoyo. Yakakwira-frequency maficha ayo anosiyana zvakanyanya mukati meiyo frustum hombe anongodzikira akananga ku zero, kusvika pari zvino kana matunhu akaomarara anoshandisa chete yakagadzikana yakaderera-frequency ruzivo - chaizvo maitiro e-anti-aliasing emamipmaps mune yekare girafu.
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 reMip-NeRF uye Anti-Aliased Radiance Minda
Mip-NeRF yakatanga mhuri yeminda inorwisa-aliased. Mip-NeRF 360 yakawedzera makoni kune isina kuvharwa zviratidziro zvekunze zvine contraction warp, uye Zip-NeRF yakasanganisa cone-based anti-aliasing nekukurumidza hashi-grid inomiririra kuti iwane zvese kunaka uye kumhanya. Tarisira iyo yakabatanidzwa-frustum zano kuti urambe uchitamira muGaussian splatting uye chaiyo-nguva mapaipi, uko multiscale, alias-yemahara kupa pamafoni nemahedhifoni ndicho chinangwa cheAR, mepu, uye kunyudza kubata.
Real-World Implementation
Kupa chinhu chakatorwa zvakachena muchioni chechigadzirwa chinoita kuti vashandisi vaswededze kubva pane yakazara-kamuri yekuona pasi kusvika kune yakanakisa pamusoro pezvinhu pasina kupenya.
Kugadzirazve zviratidziro zvakakura zvekunze (kuburikidza neMip-NeRF 360) yekushanya chaiko uye real-estate mafambiro uko kamera inofamba kuburikidza nehupamhi hwakadzama.
Kugadzira inopindirana yekudzidziswa mifananidzo pazvisarudzo zvakawanda zvemarobhoti kana autonomous-kutyaira simulators.
Kugadzira crisp synthetic novel-view mafuremu efirimu uye VFX previsualization uko aliasing yaizopwanya pfuti.
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
Neural Radiance Fields
Mibvunzo inowanzo bvunzwa
What is Mip-NeRF and Anti-Aliased Radiance Fields?
Mip-NeRF inogadzirisa zvakasvibirira, zvimisikidzo zvinonetsa iyo yekutanga NeRF paunopa zviratidziro pamadaro akasiyana kana sarudzo. Inoita izvi nekutsvaga makoni panzvimbo pemwaranzi yakatetepa, ichiita 3D chiitiko ichipa zvese zvakapinza uye nekukurumidza kudzidzisa.
Ndechipi chimiro chejometri chinoteedzerwa naMip-NeRF kuburikidza nechiitiko panzvimbo yemwaranzi mutete wakashandiswa neNeRF yekutanga?
Mip-NeRF inokanda koni kubva kamera kuburikidza nepixel yega yega uye inoitsemura kuita conical frustums, inotora vhoriyamu pixel inovhara chaizvo.
Zita rei Mip-NeRF's encoding inotsiva yakajairwa positional encoding?
Mip-NeRF inosvitsa yakasanganiswa positional encoding, iyo inokodha dunhu (aGaussian-inofungidzira frustum) kwete poindi imwe chete.
Sei iyo yekutanga NeRF ichiburitsa aliasing kana chinhambwe chekamera chichichinja?
Sample yakatetepa-ray point inofuratira tsoka yepixel, saka mapikseli ari pedyo uye kure anobatwa zvakafanana, zvichikonzera jaggies uye kupenya.
Mip-NeRF inofananidzira sei dunhu mukati meconical frustum ye encoding?
Imwe neimwe frustum inofananidzwa neiyo multivariate Gaussian, uye iyo encoding inoverengera kukosha kunotarisirwa kwema sinusoids pamusoro peGaussian iyoyo.
Chii chinoitika kune yakakwira-frequency encoding maficha mukati mehombe frustum?
Nekuti yakakwira-frequency sinusoids inosiyana zvakanyanya pane yakakura frustum, kubatanidza pamusoro peGaussian inovaendesa ku zero, ichipa mipmap-senge anti-aliasing.