3dbuilding　information　model　for 　facilitating　dynamic analysis 　of 　indoor　fire　emergenc y

a　vge－basedbimifc　information－supported　and　semantic 　anal ysis 　oriented　3dbuildinginformation　model 　is 　proposed 　for 　facilitating　indoor 　fire 　emergency　evacuation．by　taking　the　dynamic thenfeature 　points 　are 　extracted　by　using　improved　harris　al gorithm　ei ghbor 　information 　aroundthese　points 　is 　described　using　color 　invariant 　value　as 　input 　information．finall ythe　points 　betweentwo　images 　are　matched　using　correlation　coefficient．to　demonstrate 　the 　feasibilit y　of 　approachex－periments　with　groups　of 　street 　view 　imagescompared　with　the 　traditional 　sift　al gorithm．show　thatthe　proposed　al gorithm　can　not　onl y　intensive　match　pointshi gher　matching　correct 　rate 　speed　validity．