Onthebasisofstereoimageanalysis,thechangedetectionofman-madeobjectsinurbanareasisintroduced.Informationoftheheightofman-madeobjectscanbeappliedtoreinforcetheirchangedetection.BycomparisonbetweenthenewandoldDSMs,thechangedregionsareextracted.However,ouraimistodetectchangesofman-madeobjectsinurbanareaandfurtherinthepotentialareasbythemeansofline-featurematchingandgradientdirectionhistogram.TheexperimentsbasedontheaerialimagesfromJapanhaveproventhatthealgorithmiscorrectandefficient.
