{"id":1705,"date":"2023-03-22T09:40:55","date_gmt":"2023-03-22T09:40:55","guid":{"rendered":"https:\/\/adaptiverecognition.com\/illumination-for-anpr-when-you-need-it-and-how-to-choose-between-different-light-sources\/"},"modified":"2024-10-25T11:03:34","modified_gmt":"2024-10-25T11:03:34","slug":"illumination-for-anpr","status":"publish","type":"post","link":"https:\/\/adaptiverecognition.com\/sk\/blog\/traffic-transportation\/illumination-for-anpr\/","title":{"rendered":"Osvetlenie pre ANPR: Kedy ho potrebujete a ako si vybra\u0165 medzi r\u00f4znymi sveteln\u00fdmi zdrojmi"},"content":{"rendered":"

Rovnak\u00e9 faktory, ktor\u00e9 zni\u017euj\u00fa vidite\u013enos\u0165 pre \u013eudsk\u00e9 oko, predstavuj\u00fa v\u00fdzvu aj pre automatick\u00e9 rozpozn\u00e1vanie eviden\u010dn\u00fdch \u010d\u00edsiel (ANPR, zn\u00e1me aj ako LPR \u2013 license plate recognition). Zne\u010disten\u00e1 alebo za\u0161pinen\u00e1 tabu\u013eka sa m\u00f4\u017ee \u0165a\u017eko \u010d\u00edta\u0165, preto je n\u00e1ro\u010dn\u00e9 dosiahnu\u0165 vysok\u00fa presnos\u0165 rozpozn\u00e1vania \u0160PZ pri nevhodn\u00fdch sveteln\u00fdch podmienkach.<\/p>\n\n\n\n

Hoci projekty ANPR zvy\u010dajne nevy\u017eaduj\u00fa osvetlenie po\u010das d\u0148a, pr\u00eddavn\u00e9 svetlo je ve\u013emi u\u017eito\u010dn\u00e9 v noci. V\u010faka pokroku v technol\u00f3gii ANPR dok\u00e1\u017ee v\u00e4\u010d\u0161ina kamier na rozpozn\u00e1vanie \u0160PZ so vstavan\u00fdmi sveteln\u00fdmi senzormi \u2013 ako napr\u00edklad kamera Vidar ANPR\/LPR, kamera Vidar Speed s radarom r\u00fdchlosti alebo kamera Einar ur\u010den\u00e1 na riadenie pr\u00edstupu vozidiel \u2013 automaticky prep\u00edna\u0165 medzi dennou a no\u010dnou prev\u00e1dzkou. Vidar dokonca umo\u017e\u0148uje nastavi\u0165 r\u00f4zne \u00farovne osvetlenia, a to aj z jedn\u00e9ho sn\u00edmku na druh\u00fd.<\/p>\n\n\n\n

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Spr\u00e1vne osvetlenie m\u00f4\u017ee v\u00fdrazne u\u013eah\u010di\u0165 pr\u00e1cu ANPR kamer\u00e1m<\/figcaption><\/figure>\n\n\n\n

V tomto \u010dl\u00e1nku sa venujeme va\u0161im najp\u00e1l\u010divej\u0161\u00edm ot\u00e1zkam o osvetlen\u00ed: Sta\u010dia v\u00e1m vstavan\u00e9 osvet\u013eova\u010de v kamere? Ak\u00e9 pr\u00e1vne predpisy ovplyv\u0148uj\u00fa v\u00fdber vlnovej d\u013a\u017eky? Ktor\u00fa met\u00f3du osvetlenia si zvoli\u0165? <\/p>\n\n\n\n

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Pou\u017eitie vstavan\u00e9ho osvetlenia alebo samostatn\u00fdch osvet\u013eova\u010dov<\/h2>\n\n\n\n

Mo\u017eno sa p\u00fdtate, \u010di s\u00fa pre v\u00e1\u0161 ANPR projekt potrebn\u00e9 \u010fal\u0161ie osvet\u013eova\u010de okrem t\u00fdch zabudovan\u00fdch v ANPR kamere. V\u0161eobecn\u00e9 pravidlo hovor\u00ed, \u017ee ak chcete \u010d\u00edta\u0165 iba eviden\u010dn\u00e9 \u010d\u00edsla, osvet\u013eova\u010d zabudovan\u00fd v ANPR kamer\u00e1ch, ako s\u00fa Vidar alebo Einar, by mal posta\u010dova\u0165. Pre in\u00e9 pr\u00edpady pou\u017eitia, ako je ur\u010dovanie obsadenosti vozidla, je v\u0161ak potrebn\u00e9 extern\u00e9 osvetlenie. To je pr\u00edpad n\u00e1\u0161ho podsyst\u00e9mu na po\u010d\u00edtanie pasa\u017eierov Vidar PAX, ktor\u00fd sn\u00edma osoby vo vozidle pomocou infra\u010derven\u00e9ho svetla a po\u010d\u00edta cestuj\u00facich na zachytenom obr\u00e1zku.<\/p>\n\n\n\n

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Kamera Vidar PAX na po\u010d\u00edtanie pasa\u017eierov v akcii<\/figcaption><\/figure>\n\n\n\n

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Pou\u017e\u00edvanie r\u00f4znych \u00farovn\u00ed osvetlenia na dosiahnutie \u010do najlep\u0161\u00edch v\u00fdsledkov ANPR<\/h2>\n\n\n\n

Niektor\u00e9 ANPR kamery pou\u017e\u00edvaj\u00fa technol\u00f3giu sn\u00edmania s tzv. striedan\u00edm intenzity osvetlenia (frame parity flashing). To znamen\u00e1, \u017ee kamery nasn\u00edmaj\u00fa nieko\u013eko z\u00e1berov vozidla s r\u00f4znymi \u00farov\u0148ami osvetlenia a syst\u00e9m n\u00e1sledne automaticky vyberie ten najlep\u0161\u00ed na spracovanie automatick\u00e9ho rozpozn\u00e1vania \u0160PZ. T\u00e1to met\u00f3da sa \u0161iroko pou\u017e\u00edva aj v ANPR kamer\u00e1ch Adaptive Recognition.<\/p>\n\n\n\n

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