. ▁The ▁' g onio ' ▁part ▁of ▁the ▁word ▁refers ▁to ▁the ▁device ' s ▁ability ▁to ▁measure ▁at ▁different ▁angles . ▁ ▁Several ▁similar ▁devices ▁have ▁been ▁built ▁and ▁used ▁to ▁capture ▁data ▁for ▁similar ▁functions . ▁Most ▁of ▁these ▁devices ▁use ▁a ▁camera ▁instead ▁of ▁the ▁light ▁intensity - me as uring ▁sensor ▁to ▁capture ▁a ▁two - dimensional ▁sample ▁of ▁the ▁target . ▁Ex amples ▁include : ▁a ▁spatial ▁g oni ore f lect ometer ▁for ▁capt uring ▁the ▁S BR DF ▁( Mc All ister , 2 0 0 2 ). ▁a ▁camera ▁g antry ▁for ▁capt uring ▁the ▁light ▁field ▁( Le voy ▁and ▁Han ra han , ▁ 1 9 9 6 ). ▁an ▁un named ▁device ▁for ▁capt uring ▁the ▁bid irection al ▁texture ▁function ▁( D ana , ▁et ▁al . ▁ 1 9 9 9 ). ▁ ▁References ▁ ▁D ana , ▁Krist in ▁et ▁al . ▁ 1 9 9 9 . ▁Ref lect ance ▁and ▁Text ure ▁of ▁Real - World ▁Sur faces . ▁in ▁AC M ▁Trans actions ▁on ▁Graphics . ▁Volume ▁ 1 8 , ▁Issue ▁ 1 ▁( J anu ary , ▁ 1 9 9 9 ). ▁New ▁York , ▁NY , ▁USA : ▁AC M ▁Press . ▁P ages ▁ 1 - 3 4 . ▁ ▁Foo , ▁Sing ▁Cho ong . ▁ 1 9 9 7 . ▁A ▁G oni ore f lect ometer ▁for ▁meas uring ▁the ▁bid irection al ▁reflect ance ▁of ▁materials