: S af ari ▁par ks ▁Category : Pro te cted ▁areas ▁of ▁North ▁West ▁( S outh ▁African ▁province ) ▁Category : Z o os ▁in ▁South ▁Africa ▁Category : Con serv ation ▁in ▁South ▁Africa ▁Category : T our ist ▁attra ctions ▁in ▁North ▁West ▁( S outh ▁African ▁province ) ▁Category : W ild life ▁re h abil itation ▁and ▁conservation ▁cent ers <0x0A> </s> ▁Ghost ▁imag ing ▁( also ▁called ▁" co inc idence ▁imag ing ", ▁" two - ph ot on ▁imag ing " ▁or ▁" cor related - ph ot on ▁imag ing ") ▁is ▁a ▁technique ▁that ▁produces ▁an ▁image ▁of ▁an ▁object ▁by ▁combining ▁information ▁from ▁two ▁light ▁detect ors : ▁ ▁a ▁conventional , ▁multi - p ixel ▁det ector ▁that ▁doesn ' t ▁view ▁the ▁object , ▁and ▁a ▁single - p ixel ▁( bucket ) ▁det ector ▁that ▁does ▁view ▁the ▁object . ▁Two ▁techniques ▁have ▁been ▁demonstrated . ▁ ▁A ▁quantum ▁method ▁uses ▁a ▁source ▁of ▁pairs ▁of ▁ent ang led ▁phot ons , ▁each ▁pair ▁shared ▁between ▁the ▁two ▁detect ors , ▁while ▁a ▁classical ▁method ▁uses ▁a ▁pair ▁of ▁correl ated ▁coh er ent ▁be ams ▁without ▁explo iting ▁ent ang lement . ▁Both ▁approaches ▁may ▁be ▁understood ▁within ▁the ▁framework ▁of ▁a ▁single ▁theory . ▁ ▁History ▁ ▁The ▁first ▁demonstr ations ▁of ▁g host ▁imag ing ▁were ▁based ▁on ▁the ▁quantum ▁nature ▁of ▁light . ▁Specifically , ▁quantum ▁correl ations ▁between ▁phot on ▁pairs ▁were ▁used