Njira yodziwira makamera obisika pogwiritsa ntchito foni yamakono ya ToF sensor

Ofufuza ochokera ku National University of Singapore ndi Yonsei University (Korea) apanga njira yodziwira makamera obisika m'nyumba pogwiritsa ntchito foni yamakono yomwe ili ndi ToF (Time of flight) sensor. Zikudziwika kuti pakali pano kamera yobisika ikhoza kugulidwa pang'ono kuposa dola imodzi ndipo makamera oterowo ndi 1-2 millimeters mu kukula, zomwe zimapangitsa kuti zikhale zovuta kwambiri kupeza m'nyumba. Ku South Korea, zochitika zoposa 6800 zokhudza kuika makamera obisika m’zipinda za mahotela kapena m’zimbudzi zinajambulidwa mkati mwa chaka.

Njira ya LAPD (Laser-Assisted Photography Detection) yopangidwa ndi ochita kafukufukuyo imapangitsa kuti athe kuzindikira makamera obisika pogwiritsa ntchito mafoni amakono okhala ndi sensor yakuya (ToF), yomwe imagwiritsidwa ntchito kuyerekeza mtunda wa zinthu poyang'ana kamera komanso muzowona zenizeni. Zitsanzo za mafoni omwe amagwiritsa ntchito masensa ngati amenewa ndi Samsung S20 ndi Huawei P30 Pro. Sensa imapanga mapu akuya poyang'ana malo ozungulira ndi laser ndikuwerengera mtunda kutengera kuchedwa kwa mtengo wowonekera.

Njira yodziwira makamera obisika imatengera kuzindikira zolakwika pakuwunikira kwa laser kwa magalasi ndi magalasi, zomwe zimapanga mawonekedwe apadera pamapu akuya. Zolakwika zimazindikirika pogwiritsa ntchito njira yophunzirira makina yomwe imatha kusiyanitsa kuwala kwamakamera. Olemba kafukufukuyu akufuna kusindikiza mapulogalamu okonzeka a Android platform pambuyo pothetsa mavuto ena ndi malire a API.

Nthawi yonse yofunikira kusanthula chipinda ndi masekondi 30-60. Pakuyesa kochitidwa ndi odzipereka a 379, makamera obisika omwe amagwiritsa ntchito njira ya LAPD adapezeka mu 88.9% yamilandu. Poyerekeza, 46% yokha ya omwe adayesa adapeza makamera ndi diso, ndipo mphamvu yogwiritsira ntchito chowunikira chapadera cha K18 chinali 62.3% ndi 57.7%, kutengera mawonekedwe osankhidwa. Njira ya LAPD idawonetsanso kuchuluka kwabodza kwabodza - 16.67% motsutsana ndi 26.9%/35.2% pa K18 ndi 54.9% pofufuza m'maso.

Kulondola kwa kuzindikira kwa LAPD kumadalira kamera yobisika yomwe imalowa mu 20-degree viewing angle ya sensa ndikukhala pamtunda woyenera kwambiri kuchokera ku sensa (ngati ili pafupi kwambiri, kuwala kwa kamera kumasokonekera, ndipo ngati kuli kutali kwambiri. kutali, kutha). Kuwongolera kulondola, akulangizidwa kugwiritsa ntchito masensa okhala ndi mawonekedwe apamwamba (m'mafoni omwe amapezeka kwa ofufuza, lingaliro la sensor ya ToF ndi 320 × 240, i.e. kukula kwa mawonekedwe osawoneka pachithunzichi ndi ma pixel 1-2 okha) ndi kuya. tsatanetsatane (pakali pano pali 8 yokha pamlingo uliwonse wakuya wa pixel).

Njira zina zowunika kukhalapo kwa kamera yobisika ndi monga ma analyzer opanda zingwe, omwe amatsimikizira kukhalapo kwa makanema owonera pa netiweki opanda zingwe, komanso ma scanner a electromagnetic radiation.

Source: opennet.ru