在zai前qian兩liang期qi文wen章zhang中zhong,我wo們men分fen別bie了le解jie了le機ji械xie跟gen蹤zong技ji術shu和he圖tu形xing識shi別bie技ji術shu在zai虛xu擬ni演yan播bo室shi係xi統tong中zhong的de應ying用yong特te點dian。而er今jin天tian要yao介jie紹shao的de紅hong外wai跟gen蹤zong技ji術shu,同tong樣yang是shi虛xu擬ni演yan播bo室shi領ling域yu不bu可ke或huo缺que的de重zhong要yao跟gen蹤zong手shou段duan,它ta以yi紅hong外wai光guang為wei媒mei介jie,為wei虛xu擬ni演yan播bo室shi的de畫hua麵mian融rong合he帶dai來lai了le精jing準zhun與yu便bian捷jie。
1、紅外跟蹤技術的介紹
紅外跟蹤是一種較新的跟蹤技術,在綜藝類、gewubiaoyanleidengxuyaoshexiangjijinxinglinghuoduobianyundongdexuniyanboshichangjingzhongyingyongguangfan,shiyongyugaoduanxuniyanboshi。taliyonghongwaixianlaijianceshexiangjideweizhijiqipaishededuixiangweiyuhuamianzhongdeshendu。
gaijishuzhichishexiangjiheyanyuandeziyouyidong,duiqujinggoutumeiyouxianzhi。danshizaishijipaisheqian,taxuyaoduizhenggeyanboshidekongjianjinxingsanweiceliang,zenmeliangne?shouxianshiyonghongwaifasheshebeifashehongwaixian,ranhouzaiyanboshideshangfanggudingduogehongwaishexiangtou,yonglaijieshouhongwaifasheshebeisuofashedecelianghongwaixian,zheyangjiunenghuizhichushexiangjihepaisheduixianghuodongdesanweiwanggekongjiantu。
攝(she)像(xiang)機(ji)和(he)拍(pai)攝(she)對(dui)象(xiang)上(shang)也(ye)需(xu)要(yao)安(an)裝(zhuang)紅(hong)外(wai)線(xian)發(fa)射(she)設(she)備(bei),它(ta)所(suo)發(fa)出(chu)的(de)紅(hong)外(wai)線(xian)信(xin)號(hao)會(hui)被(bei)事(shi)先(xian)布(bu)置(zhi)的(de)紅(hong)外(wai)線(xian)攝(she)像(xiang)頭(tou)所(suo)攝(she)取(qu)。紅(hong)外(wai)攝(she)像(xiang)機(ji)獲(huo)取(qu)的(de)信(xin)號(hao)被(bei)傳(chuan)輸(shu)到(dao)計(ji)算(suan)機(ji),經(jing)過(guo)分(fen)析(xi)和(he)識(shi)別(bie),可(ke)以(yi)得(de)到(dao)在(zai)虛(xu)擬(ni)三(san)維(wei)網(wang)格(ge)空(kong)間(jian)中(zhong)攝(she)像(xiang)機(ji)和(he)被(bei)攝(she)對(dui)象(xiang)的(de)位(wei)置(zhi)。
但紅外跟蹤技術也有一個小缺點,就是不能獲取攝像機鏡頭參數,因此通常需要配合機械跟蹤技術或圖形識別技術使用。

2、多種跟蹤技術的結合
事實上,虛擬演播室跟蹤係統擬采用機械傳感器跟蹤、圖形識別跟蹤和紅外跟蹤三種技術相結合的方式。三種跟蹤技術同時使用,係統根據優先級自動切換,確保跟蹤參數準確、定ding時shi地di傳chuan遞di給gei圖tu形xing計ji算suan機ji。這zhe樣yang的de跟gen蹤zong係xi統tong性xing價jia比bi高gao,能neng滿man足zu各ge種zhong拍pai攝she要yao求qiu。例li如ru圖tu形xing識shi別bie和he機ji械xie跟gen蹤zong結jie合he,一yi方fang麵mian圖tu形xing識shi別bie借jie助zhu傳chuan感gan器qi的de幫bang助zhu,可ke以yi允yun許xu攝she像xiang機ji在zai取qu景jing時shi不bu必bi考kao慮lv網wang格ge占zhan畫hua麵mian的de大da小xiao,完wan成cheng特te寫xie鏡jing頭tou的de拍pai攝she,甚shen至zhi在zai失shi焦jiao時shi也ye不bu會hui跟gen蹤zong失shi敗bai;另(ling)一(yi)方(fang)麵(mian),機(ji)械(xie)跟(gen)蹤(zong)借(jie)助(zhu)網(wang)格(ge)可(ke)以(yi)節(jie)約(yue)係(xi)統(tong)校(xiao)準(zhun)時(shi)間(jian),因(yin)此(ci)通(tong)常(chang)在(zai)攝(she)像(xiang)機(ji)定(ding)位(wei)時(shi)選(xuan)用(yong)圖(tu)形(xing)識(shi)別(bie)技(ji)術(shu),在(zai)完(wan)成(cheng)攝(she)像(xiang)機(ji)定(ding)位(wei)後(hou),在(zai)節(jie)目(mu)製(zhi)作(zuo)階(jie)段(duan)則(ze)由(you)機(ji)械(xie)跟(gen)蹤(zong)技(ji)術(shu)來(lai)獲(huo)取(qu)攝(she)像(xiang)機(ji)運(yun)動(dong)參(can)數(shu)。
金言演播室燈光主要應用在新聞演播室、訪談演播室、4K演播室、虛擬演播室、校園電視台、中(zhong)大(da)型(xing)直(zhi)播(bo)間(jian)等(deng)場(chang)景(jing),金(jin)言(yan)提(ti)供(gong)一(yi)站(zhan)式(shi)燈(deng)光(guang)係(xi)統(tong)解(jie)決(jue)方(fang)案(an),燈(deng)光(guang)型(xing)號(hao)齊(qi)全(quan),配(pei)套(tao)設(she)備(bei)齊(qi)全(quan),設(she)計(ji)師(shi)和(he)工(gong)程(cheng)師(shi)團(tuan)隊(dui)從(cong)業(ye)多(duo)年(nian),經(jing)驗(yan)豐(feng)富(fu),提(ti)供(gong)專(zhuan)業(ye)演(yan)播(bo)室(shi)照(zhao)明(ming)解(jie)決(jue)方(fang)案(an),符(fu)合(he)廣(guang)電(dian)電(dian)視(shi)演(yan)播(bo)室(shi)的(de)照(zhao)明(ming)需(xu)求(qiu)。
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