A K-D Tsob Ntoo (tseem hu ua K-Dimensional Tsob Ntoo) yog tsob ntoo tshawb nrhiav binary uas cov ntaub ntawv hauv txhua qhov yog K- Dimensional taw tes hauv qhov chaw … Cov ntsiab lus rau sab laug ntawm qhov chaw no yog sawv cev los ntawm sab laug subtree ntawm qhov node thiab cov ntsiab lus rau sab xis ntawm qhov chaw yog sawv cev los ntawm txoj cai subtree.
KD Tsob Ntoo Puas yog?
Cov ntsiab lus cov ntaub ntawv tau muab faib rau ntawm txhua qhov ntawm hauv ob pawg. Zoo li yav dhau los algorithm, KD Ntoo kuj yog binary tsob ntoo algorithm ib txwm xaus rau qhov siab kawg ntawm ob lub nodes… Ntawm sab xis ntawm daim duab hauv qab no, koj tuaj yeem pom qhov tseeb ntawm qhov cov ntaub ntawv cov ntsiab lus, nyob rau sab laug ntawm txoj hauj lwm spatial ntawm lawv.
Koj ua tsob ntoo KD li cas?
Build KD-Tree
- Thawj qhov taw qhia dhau los ua cag ntoo.
- Xaiv axis raws qhov tob kom axis cycles los ntawm tag nrho cov nqi siv tau. …
- Tau cov npe teev npe los ntawm axis thiab xaiv qhov nruab nrab raws li pivot ntsiab. …
- Txoj ntoo mus txog rau ntawm qhov khoob, ces muab taw tes rau ntawm node.
- Rov ua kauj ruam 2-4 rov ua dua kom txog thaum tag nrho cov ntsiab lus ua tiav.
Vim li cas peb thiaj siv kd ntoo?
KD-ntoo yog cov ntaub ntawv tshwj xeeb rau kev sawv cev zoo rau peb cov ntaub ntawvTshwj xeeb, KD-ntoo pab npaj thiab faib cov ntsiab lus raws li cov xwm txheej tshwj xeeb. Tam sim no, peb tab tom yuav ua qee qhov axis aligned txiav, thiab tswj cov npe ntawm cov ntsiab lus uas poob rau hauv txhua qhov ntawm cov khoom sib txawv no.
Yog octree yog tsob ntoo kd?
Tus cov ntaub ntawv ntawm txhua nplooj ntoo ntawm octree ua los ntawm tsob ntoo KD hauv zos. Nyob rau hauv lub octree, cov nodes tsuas khaws lawv cov ntaub ntawv hais txog bounding box. Txhua nplooj ntawv yog muab tus nqi ntsuas rau qhov yooj yim ntawm kev tshawb fawb.
