▁So ▁the ▁element ▁with ▁the ▁highest ▁value ▁indicates ▁the ▁straight ▁line ▁that ▁is ▁most ▁represented ▁in ▁the ▁input ▁image . ▁ ▁Ex amples ▁ ▁Example ▁ 1 ▁ ▁Consider ▁three ▁data ▁points , ▁shown ▁here ▁as ▁black ▁d ots . ▁ ▁For ▁each ▁data ▁point , ▁a ▁number ▁of ▁lines ▁are ▁pl otted ▁going ▁through ▁it , ▁all ▁at ▁different ▁angles . ▁These ▁are ▁shown ▁here ▁in ▁different ▁colours . ▁To ▁each ▁line , ▁a ▁support ▁line ▁exists ▁which ▁is ▁per pend icular ▁to ▁it ▁and ▁which ▁intersect s ▁the ▁origin . ▁In ▁each ▁case , ▁one ▁of ▁these ▁is ▁shown ▁as ▁an ▁arrow . ▁The ▁length ▁( i . e . ▁per pend icular ▁distance ▁to ▁the ▁origin ) ▁and ▁angle ▁of ▁each ▁support ▁line ▁is ▁calculated . ▁L ength s ▁and ▁angles ▁are ▁tab ulated ▁below ▁the ▁diag rams . ▁From ▁the ▁calculations , ▁it ▁can ▁be ▁seen ▁that ▁in ▁either ▁case ▁the ▁support ▁line ▁at ▁ 6 0 ° ▁has ▁a ▁similar ▁length . ▁Hence , ▁it ▁is ▁understood ▁that ▁the ▁corresponding ▁lines ▁( the ▁blue ▁ones ▁in ▁the ▁above ▁picture ) ▁are ▁very ▁similar . ▁One ▁can ▁thus ▁assume ▁that ▁all ▁points ▁lie ▁close ▁to ▁the ▁blue ▁line . ▁ ▁Example ▁ 2 ▁ ▁The ▁following ▁is ▁a ▁different ▁example ▁showing ▁the ▁results ▁of ▁a ▁H ough ▁transform ▁on ▁a ▁r aster ▁image ▁containing ▁two ▁thick ▁lines . ▁ ▁The ▁results ▁of ▁this ▁transform ▁were ▁stored ▁in ▁a ▁matrix . ▁Cell ▁value ▁represents ▁the ▁number ▁of ▁curves ▁through ▁any