forestry classification of beijing using supervised & unsupervised.pptx

7/18/2019 FORESTRY CLASSIFICATION OF BEIJING USING SUPERVISED & UNSUPERVISED.pptx

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FORESTRY CLASSIFICATION OF

BEIJING USING SUPERVISED &

UNSUPERVISED

CLASSIFICATION.BY: MUHAMMAD USMAN FARID.


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OUTLINE

Introdut!on

S!t" Ar"#

Su$"r%!"d C'#!(!#t!on M#$

Unu$"r%!"d C'#!(!#t!on M#$

R"u't Con'u!on

Ad%#nt#)" #nd D!#d%#nt#)"


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INTRODUCTION

For t*" o+$'"t!on o( t*" our", I *#%" "'"t"d t*" !t" B"!-!n) #n

!t (or"tr '#nd u" '#!(!#t!on.

A (ro+ t*" (!rt )'#" o( %!u#' )round troo$!n) /" #n # t*#t,

B"!-!n) ! # )r""n !t.

A't*ou)* (or t*" r"$r""nt#t!on o( t*" (or"tr !n t*" #r"#, I *#%"

u"d t*" ENVI 0.1 So(t/#r".

I *#%" u"d t*" TM 2#nd 3!dt* 4 (or to r"$r""nt t*" !t" o( (or"tr

I u"d t*" Su$"r%!"d #nd Unu$"r%!"d '#!(!#t!on o( !t" 2

u!n) ENVI 0.1 o(t/#r".


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SITE AREA

B"!-!n), (or+"r' Ro+#n!5"d # P"6!n).

B"!-!n) ! t*" "ond '#r)"t C*!n"" !t 2 ur2#n $o$u'#t!on #(t"r S*#n)*#! #nd

! t*" n#t!on7 $o'!t!#', u'tur#', #nd "du#t!on#' "nt"r.

T*" Ar!"' +#$ o( t*" !t ! # und"r.

F!). 89 TM M#$ o( B"!-!n)


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SUPERVISED CLASSIFICATION OF BEIJING

D"%"'o$+"nt o( # '#!(!#t!on *"+" 2 "'"t!n) r"$r""nt#t!%" #r"# u!n)

r"("r"n" our" u* # *!)*"r r"o'ut!on.

D"t"r+!n" t*" nu+2"r o( 'ut"r "nt"r #nd !n!t!#'!5" t*" 'ut"r "nt"r

M#!+u+ '!6"'!*ood u$"r%!"d '#!(!#t!on

MLC ! $"r(or+"d #ord!n) to t*" (o''o/!n) t"$

D!$'# t*" t*r"";2#nd o%"r'# o+$o!t" !+#)"

U!n)


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Su$"r%!"d C'#!(!#t!on M#!+u+

L!6"'!*ood M#$

F!)ur" 4. M#'!6"'!*ood


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UNSUPERVISED CLASSIFICATION OF

BEIJING

Anot*"r 2ro#d o( '#!(!#t!on ! unu$"r%!"d '#!(!#t!on.

It do"n=t r">u!r" *u+#n to *#%" t*" (or"6no/'"d)" o( t*" '#", #nd +#!n'

u!n) o+" 'ut"r!n) #')or!t*+ to '#!( #n !+#)" d#t#.

T*" o+$ut"r u" t"*n!>u" to d"t"r+!n" /*!* $!"' #r" r"'#t"d #nd )rou$

t*"+ !nto '#".

T*" t/o +ot (r">u"nt' u"d #')or!t*+ #r" t*" ?;+"#n #nd t*" ISODATA'ut"r!n) #')or!t*+.

In )"n"r#', 2ot* o( t*"+ #!)n (!rt #n #r2!tr#r !n!t!#' 'ut"r %"tor.

T*" ISODATA #')or!t*+ ! !+!'#r to t*" 6;+"#n #')or!t*+ /!t* t*" d!t!nt

d!(("r"n" t*#t t*" ISODATA #')or!t*+ #''o/ (or d!(("r"nt nu+2"r o( 'ut"r

/*!'" t*" 6;+"#n #u+" t*#t t*" nu+2"r o( 'ut"r ! 6no/n # $r!or!.


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UNSUPERVISED CLASSIFICATION OF

BEIJING USING ISO;DATA AND ?;MEANS

F!)ur" 49

ISO;DATA

F!)ur" @9

?;M"#n


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RESULTS

T*" "'"t!on o( u!t#2'" 2#nd o+2!n#t!on ! ""nt!#' (or SPOT @ !+#)" (or

%!u#' !nt"r$r"t#t!on.

T*" !+#)" o( B"!-!n) For"t R""r%" #nd !t urround!n) #r"# #$$"#r +u* 2"tt"

#(t"r $"r(or+"d "n*#n"+"nt t"*n!>u".

In t*! tud, t*" 2#nd o+2!n#t!on o( 0;@;4 R"d;Gr""n;B'u" /# "'"t"d # t*

2"t o+2!n#t!on #nd '#t"r u"d (or d!)!t#' '#!(!#t!on.

M"#n/*!'" For"t #$$"#r +or" "$#nd"d o+$#r"d to t*" unu$"r%!"d t"*n!>u

M#!+u+ L!6"'!*ood C'#!(!"r MLC #nd t*" or!)!n#' +"*#n!+ o( ISODATA

'#!(!"r !n t*" unu$"r%!"d t"*n!>u".

T*" %")"t#t!on +#$$!n) #ur# !n 2ot* t"*n!>u" r"("rr"d to $rodu"r= #nd

u"r= #ur#!".


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CONCLUSION

T*" tud on "%#'u#t!on o( #ur# (ro+ t*" u$"r%!"d #nd unu$"r%!"d

t"*n!>u" *#d $rodu"d # 2#"'!n" (or t*" B"!-!n) For"tr.

Aur# #"+"nt *o/"d t*#t t*" o%"r#'' #ur#!" /"r" '" t*#n #nd

18 (or unu$"r%!"d #nd u$"r%!"d '#!(!#t!on, r"$"t!%"'.

T*" #d%#nt#)" o( '#!(!#t!on ! o2%!ou.

/" #n )"t t*" $*!#' +"#n!n)(u' r"('"t#n" #nd t*"!r +u't!%#r!#t" $r"#d.

3" #n 6no/ t*" "t!+#t" t*" #r"# o%"r#)" 2 (or"tr.


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ADVANTAGES AND DISADVANTAGES OF SUPERVISED

AND UNSUPERVISED CLASSIFICATION

Supervised classification

Disadvantages

The disadvantage of this approach is its computational cost, since performing wrapper

FSS is slow.

Unsupervised Classification

Disadvantages

As the analyst has little control over the groupings determined in unsupervised classificatio

assigning those groupings to reset classes can be more difficult and complicated.

t should be noted, however, that in other situations where the final set of land cover classes

is more open to ad!ustment this disadvantage may not be an issue in the classification.

A fiction than the unsupervised method for similar reasons. The inherent disadvantages of

the unsupervised method are advantages of the supervised method, and vice versa.


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ADVANTAGES AND DISADVANTAGES OF SUPERVISED

AND UNSUPERVISED CLASSIFICATION

Supervised classification

Advantages

T*! !+#)" )!%" u #n %!!2'" $!tur" 2 o+$#r!n) 2ot* )round troo$!n) #nd o+$ut

)"n"r#t!on.

Unsupervised Classification

Advantages It +!)*t )!%" u t*" !+#)" #nd '#!(!#t!on o( t*" !t" /!t*out !n$utt!n) #n )round

troo$!n) d#t#,

It /!'' *o/ t*" 2#nd r"$r""nt#t!on /!t* t*" t*r"" oord!n#tor r"d, )r""n #nd 2'u".

It /!'' d!t!n)u!* t*" "'' $!"' d"n!t.


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THAN? YOU

forestry classification of beijing using supervised & unsupervised.pptx

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