▁to ▁build ▁up ▁an ▁image . ▁One ▁of ▁the ▁phot ons ▁of ▁the ▁pair ▁strik es ▁the ▁object ▁and ▁then ▁the ▁bucket ▁det ector ▁while ▁the ▁other ▁follows ▁a ▁different ▁path ▁to ▁a ▁( multi - p ixel ) ▁camera . ▁The ▁camera ▁is ▁constructed ▁to ▁only ▁record ▁pixels ▁from ▁phot ons ▁that ▁hit ▁both ▁the ▁bucket ▁det ector ▁and ▁the ▁camera ' s ▁image ▁plane . ▁ ▁Later ▁experiments ▁indicated ▁that ▁the ▁correl ations ▁between ▁the ▁light ▁beam ▁that ▁hits ▁the ▁camera ▁and ▁the ▁beam ▁that ▁hits ▁the ▁object ▁may ▁be ▁explained ▁by ▁purely ▁classical ▁physics . ▁If ▁quantum ▁correl ations ▁are ▁present , ▁the ▁signal - to - no ise ▁ratio ▁of ▁the ▁re construct ed ▁image ▁can ▁be ▁improved . ▁ ▁In ▁ 2 0 0 9 ▁' pse ud oth erm al ▁g host ▁imag ing ' ▁and ▁' g host ▁diff raction ' ▁were ▁demonstrated ▁by ▁implementing ▁the ▁' comput ational ▁g host - im aging ' ▁scheme , ▁which ▁relax ed ▁the ▁need ▁to ▁e voke ▁quantum ▁correl ations ▁arguments ▁for ▁the ▁pseud oth erm al ▁source ▁case . ▁ ▁Rec ently , ▁it ▁was ▁shown ▁that ▁the ▁principles ▁of ▁' Com pressed - S ens ing ' ▁can ▁be ▁directly ▁util ized ▁to ▁reduce ▁the ▁number ▁of ▁measurements ▁required ▁for ▁image ▁reconst ruction ▁in ▁g host ▁imag ing . ▁This ▁technique ▁allows ▁an ▁N ▁pixel ▁image ▁to ▁be ▁produced ▁with ▁far ▁less ▁than ▁N ▁measurements ▁and ▁may ▁have ▁applications ▁in ▁L ID AR ▁and ▁micro sc