LAPORAN RESMI PRAKTIKUM PENGINDERAAN JAUH MODUL II : KOREKSI : KOREKSI RADIOMETRI RADIOMETRI
Disusun Oleh: RACHMAT AFRIYANTO 26020114140104 ILMU KELAUTAN A
Koordinator Mata Kuliah Peninderaan Jauh : Ir. Petrus Subar!"# Ms$ NIP. NIP. 1%&61020 1%'(0) 1%'(0) 1 001 Ti! Asisten
R$*t" Set+a,a* R$a*$ Te-u / Ha*a Fara Fr$a F$r$sa*a Ra+a*a ,$ar$ Ara*t" Muaa Saau$* ea Is*a$*$+a M. a*$e A Ma$3 "$3 Set$+" /$a3s"*"
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JURUSAN ILMU KELAUTAN "AKULTAS PERIKANAN DAN ILMU KELAUTAN UNI#ERSITAS DIPONEGORO SEMARANG
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Shi(t5 2 Tl Pra)ti)u! 5 20 Mare Marett 20 2016 Tl Penu!*ulan 5 26 Maret 2016
LEM+AR PENILAIAN MODUL II : KOREKSI : KOREKSI RADIOMETRI RADIOMETRI
Na!a 5 RA,HMAT R A,HMAT A"RI-ANTONIM A"RI-ANTONIM 5 $'%$ %&&.&.%&%. %&&.&.%&%.
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KETERANGAN
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NILAI
Pe*auua* T$*!aua* Pusta3a Mater$ a* Met"e Has$ a* Pebaasa* Pe*utu a7tar Pusta3a TOTAL
Me*-etau$# K""r$*at"r Pra3t$3u
As$ste*
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I/
PENDAHULUAN
&/&/ Latar +ela)an
Era "er* saat $*$# 3ea!ua* te3*""-$ $berba-a$ b$a*- ber3eba*e*-a* sa*-at esat. at. Remote Sensing atau atau te3*" te3*"" "-$ -$ e*e*-$* $*e eraa raa* * !au !au erua3a* erua3a* suatu e*-eba* e*-eba*-a* -a* ar$ te3*""-$ e"treta* e"treta* uara +a*- ua$ $er3 $er3e*a e*a3a 3a* * aa aa a3$r a3$r aba aba 3e81% 3e81% seba-a seba-a$$ suatu suatu e*-e e*-eba* ba*-a* -a* eeta eetaa* a* eau$ eau$ sate$t sate$t.. Ma*7aat Ma*7aat "tret "tret uara uara $rasa $rasa sa*-at sa*-at besar besar aa aa era*era*- u*$a u*$a ertaa a* 3eua# se$*--a ara $*$ $a3a$ aa e3s"ras$ rua*- a*-3asa. Se!a3 saat $tu $st$a e*-$*eraa* !au $3e*a a* e*!a$ "uer aa u*$a eetaa*. Peta +a*- $as$3a* "e ere3aa* !ara3 !au $*$ $3e*a e*-a* *aa *aa $tra $tra e*-$* e*-$*ra raa* a* !au. !au. Nau* Nau* aa aa asar* asar*+a +a $tra $tra sate$t sate$t e*-a* e*-a* eta eta eu*+a$ erbeaa* +a*- e*""3 a* t$a3 b$sa $3ata3a* saa. aa ra3t$3u $*$ a3a* $baas e*-e*a$ 3"re3s$ ra$"etr$ $a*a 3"re3s$ ra$"etr$ ra$"etr$ 9 satelite satelite Imagecallibration: Imagecallibration: erua3a* s$ste e*-$*eraa* !au +a*$-u*a3a* u*tu3 e*-ura*-$ e*-aru abura* at"s7er aa $tra sate$t terutaa aa saura* taa3 9visible visible light light :. :. Habura* Habura* at"s7er at"s7er $sebab3a $sebab3a* * "e aa*+a art$3e8art$3e $ at"s7er +a*- eber$3a* e7e3 abura* aa e*er-$ ee3tr"a-*et$3 ataar$ +a*- bere*-aru aa *$a$ se3tra $tra.
Pe*-aru abura* 9 scattering : aa $tra +a*- e*+ebab3a* *$a$ se3tra $tra e*!a$ eb$ t$*--$ ar$aa *$a$ sebe*ar*+a. Met"e 3"re3s$ ra$"etr$ +a*+a*- $-u*a $-u*a3a* 3a* aa aa ra3t$ ra3t$3u 3u $*$ aaa aaa Met"e Met"e Pe*+es Pe*+esua$ ua$a* a* H$st"H$st"-ra ra 9 Histogram Histogram Adjustment :. :. Pe*Pe*-$* $*e era raa* a*
!au !au
7"t" 7"t"-r -ra7 a7$3 $3
e*e*-ur ura$ a$3a 3a* *
te*t te*ta* a*-
3ara 3ara3t 3ter er$s $st$ t$3 3
interpretative a* geometric a* geometric asar 7"t" uara. Kara3ter$st3 ra$"etr$3 $-u*a3a* u*tu3 u*tu3 e*-"re3s$ e*-"re3s$ $tra e*-a* e*-a* e*-a7"t" e*-a7"t" uara e*e*tu3a* e*e*tu3a* ba-a$a*a 7$ terte*tu +a*- $"tret3a* a* $r"ses aa 3"*$s$ terte*tu e*a*--a$ te*a-a e*-a* berba-a$ $*te*s$tas. Pe*-etaua* te*ta*-- 3ara3ter$st$3 $*$ ber-u*a a* 3aa*-83aa*- sa*-at e*t$*- ba-$ r"ses a*a$s$s $tra 7"t"-ra7$3 terutaa aa sua+a e*a$3a* ubu*-a* 3ua*t$tat$7 a*tara *$a$ r"*a aa suatu $tra a* beberaa 7e*"e*a ea*.
&/$/ Tu0uan
Aau* tu!ua* ra3t$3u I*era!a "u 2 K"re3s$ Ra$"etr$ $*$ aaa5 1.
Maas$s Maas$s,a ,a $ar $ara3 a3a* a* au au ea3 ea3u3a u3a* * 3"re3s$ 3"re3s$ ra$" ra$"et etr$ r$
2.
Maa Maas$ s$s,a s,a $ $ar ara a3a 3a* * au au e eer$ er$3s 3saa atmospheric b$as atmospheric b$as $tra
).
Maas$s Maas$s,a ,a $ara $ara3a 3a* * aat e*-e*--u*a u*a3a* 3a* et"e et"e e*+e e*+esua sua$a* $a* $st"-ra
4.
Maas$s Maas$s,a ,a $ara $ara3a 3a* * au au ea3u3 ea3u3a* a* te3*$3 te3*$3 e*+e e*+esua sua$a* $a* $st"-ra Dark $st"-ra Dark Pixel Correction
&.
Maas$s Maas$s,a ,a $ara $ara3a 3a* * au au ea3u3 ea3u3a* a* te3*$3 te3*$3 e*+e e*+esua sua$a* $a* $st"-ra Enchanced $st"-ra Enchanced Dark Pixel
6.
Maas$s Maas$s,a ,a $ara $ara3a 3a* * au au ea3u3 ea3u3a* a* te3*$3 te3*$3 e*+e e*+esua sua$a* $a* $st"-ra Cut !! Scattergram
&/1/ Man(aat Aau* a*7aat ra3t$3u I*era!a "u 2 K"re3s$ Ra$"etr$ $*$ aaa5
1.
Pra3t$ Pra3t$3a* 3a* aat aat ea3 ea3u3a u3a* * 3"re3 3"re3s$ s$ ra$ ra$"e "etr$ tr$
2.
Pra3 Pra3t$ t$3a 3a* * a aat at e* e*-e -eta tau u$$ *$a$ *$a$ atmospheric b$as atmospheric b$as $tra ar$ suatu $tra
).
Pra3t$ Pra3t$3a* 3a* aa aatt e*-3"r e*-3"re3s e3s$$ e7e3 at" at"s7er s7er b$as b$as e*-a* e*-a* ara ara e*-$e*t$7$3as$ ba+a*-a* pixel ba+a*-a* pixel
II/
TINJAUAN PU PUSTAKA
$/&/ Kore)si Radio!etri $/&/&. De(inisi Kore)si Radio!etri
C$tra +a*- $-u*a3a* u*tu3 e*-"aa* ata e*-$*eraa* !au e$3$ beberaa 3e3ura*-a*# seert$ teraat*+a abura* atau b$as +a*- $a3$bat3a* "e beberaa e7e3 at"s7er. U*tu3 e*-ura*-$ e7e3 tersebut a3a $a3u3a*a 3"re3s$ ra$"etr$ 9 satelite satelite Image callibration: callibration: +a*- erua3a* suatu et"e +a*- $-u*a3a* u*tu3 e*-ura*-$ e*-aru abura* at"s7er aa $tra sate$t terutaa aa saura* taa3 9visible 9visible light :. :. Habura* at"s7er $sebab3a* "e aa*+a art$3e ; art$3e $ at"s7er +a*- eber$3a* e7e3 abura* aa e*ere*er-$$ ee3tr ee3tr"a "a-*e -*et$3 t$3 ataa ataar$ r$ +a*+a*- bere* bere*-ar -aru u aa aa *$a$ *$a$ se3tr se3tra a $tra. $tra. Pe*-aru abura* 9 scattering : aa $tra +a*- e*+ebab3a* *$a$ se3tra $tra e*!a e*!a$$ eb$ eb$ t$*--$ t$*--$ ar$a ar$aa a *$a$ *$a$ sebe*a sebe*ar*+ r*+a. a. At"s7 At"s7er er aat aat e*+er e*+era# a# ea ea*t *tu u3a 3a*# *#
atau atau
e*s e*str tra* a*s s$s$ $s$3a 3a* *
-e" -e"b ba* a*-
ee3 ee3tr" tr"aa-*e *et$ t$3 3
+a*+a*-
e*+ebab3a* aat ra$"etr$3 aa $tra# +a$tu *$a$ pixel *$a$ pixel !au !au eb$ t$*--$ atau !au eb$ re*a ar$ a*ara* +a*- sebe*ar*+a. K"re3s$ ra$"etr$ $*$ e*e*-3" 3"*< *
Pe*--abu*-a* ata 9 Data "usion:. Ya$tu e*--abu*-3a* $tra ar$ suber +a*- berbea aa area +a*- saa u*tu3 eba*tu $ aa $*terretas$. Seba-a$ "*t" aaa e*--abu*-3a* ata #andsat 8TM e*-a* ata SPOT.
Colodraping . Ya$tu e*ee3a* satu !e*$s ata $tra $ atas ata +a*a$*+a u*tu3 ebuat suatu 3"b$*as$ ta$a* se$*--a eua3a* u*tu3 e*-a*a$sa ua atau eb$
Pe*a!aa*
3"*tras. Ya$tu
eerba$3$
ta$a*
$tra
e*-a*
ea3s$u3a* 3"*tras a*tara e*aa+aa* a* e*--eaa* atau e*a$3a* a* ere*a3a* ar-a ata suatu $tra.
"iltering .
Ya$tu
eerba$3$
ta$a*
$tra
e*-a*
e*tra*s7"ras$3a* *$a$8*$a$ digital $tra# seert$ eerta!a batas area +a*- eu*+a$ *$a$ digital +a*- saa 9 Enhance Edge:# e*-aus3a* $tra ar$ noise 9Smooth $oise:# a* a$**+a.
F"rua. Ya$tu ebuat suatu "eras$ ateat$3a a* easu3a* *$a$8*$a$ digital $tra aa "eras$ ateat$3a tersebut# $sa*+a Principal Component Anal%sis 9PCA:.
$/&/$ Keunaan Kore)si Radio!etri
Satelite Image Callibration atau K"re3s$ ra$"etr$ erua3a* suatu et"e u*tu3 eerba$3$ 3ua$tas $tra e*-a* ara e*-ura*-$ 3esaaa*83esaaa* +a*- $sebab3a* "e s$ste ere3aa* serta 3esaaa* +a*- $a3$bat3a* "e er!aa*a* s$*ar ataar$ a* suatu "b!e3 3e 3aera ere3a eau$ e$a at"s7er 9Su3"!" a* Kustart" aa Kasa*a# 201):. Me*urut Sasur$ 92004:# 3"re3s$ ra$"etr$ $eru3a* aa a*a$sa ata e*-$*eraa* !au 3are*a aa saat ere3aa*# te*a-a ra$"etr$ +a*saa$ 3e se*s"r ba*+a3 e*-aa$ -a*--ua* at"s7$r.
Me*urut Murt$ 92012:# 3"re3s$ ra$"etr$ bertu!ua* u*tu3 eerba$3$ 3ua$tas <$sua $tra a* se3a$-us eerba$3$ *$a$ ; *$a$ $=e +a*- t$a3 sesua$ e*-a* *$a$ a*tua* "b!e3 atau a*ara* se3tra "b!e3 +a*- sebe*ar*+a. Ke-u*aa* 3"re3s$ ra$"etr$ aa e*e$t$a* $ba-$ e*!a$ 2 aa# +a$tu5 1. K"re3s$ ra$"etr$ u*tu3 e*-ura*-$ e*-aru at"s7er 2. K"re3s$ ra$"etr$ u*tu3 e*-ura*-$ e*-aru t""-ra7$ Me*urut A**as 9200%:# 3"re3s$ ra$"etr$ eber$3a* s3aa aa *$a$ $=e# seba-a$ "*t" s3aa "*"3r"at$3 0 saa$ 2&& a3a* $uba e*!a$ *$a$ ra$a* sebe*ar*+a.
$/&/1 Kele2ihan dan Ke)uranan Kore)si Radio!etri
K"re3s$ ra$"etr$ e$$3$ beberaa 3eeb$a* +a*- $a*tara*+a aaa aa 3eaua**+a u*tu3 eerba$3$ -a*--ua* at"s7er seert$ 3abut t$$s# asa# a* a$*8a$* se$*--a aat e$*$a$s$r b$as atau abura* $tra +a*- $-u*a3a* 9E3a$*ata et al .# 200':. Keeaa* 3"re3s$ ra$"etr$ aaa as$ $*terretas$ sa*-at ter-a*tu*- 3eaa e*$-$t 9$*terreter:# se$*--a as$*+a bers$7at sub!e3t$7 9Kart$3a et al .# 2012:. $/$ Pen3esuaian Histora!
Met"e e*+esua$a* $st"-ra aaa et"e +a*- u3u seera*a# e*-a* ,a3tu +a*- $-u*a3a* u*tu3 er"sesa* s$*-3at a* t$a3 eeru3a* er$tu*-a* ateat$s +a*- ru$t. Asus$ ar$ et"e $*$ aaa aa r"ses 3"$*- $-$ta "e se*s"r# "b!e3 +a*- eber$3a* res"* se3tra +a*- a$*re*a searus*+a ber*$a$ *". Aab$a *$a$ $*$ ter*+ata eeb$$ a*-3a *" a3a *$a$ tersebut $$tu*- seba-a$ o!!set a* 3"re3s$ $a3u3a* e*-a* e*-ura*-$ seuru *$a$ aa saura* tersebut e*-a* o!!set 8*+a 9a*"e"r"# 1%%6:. Pe*+esua$a* $st"-ra $*$ ee,at$ beberaa taa# a* as$*+a t$a3 seau *a$3. Ha $*$ $sebab3a* 3are*a t$a3 set$a $tra eu*+a$ *$a$ "b!e3 +a*$ea u*tu3 $3"re3s$# seert$ a$r !er*$ atau ba+a*-a* a,a*. $ba*$*-3a* e*-a* te3*$3 e*+esua$a* $st"-ra as$*+a t$a3 !au berbea 9Suta*t"# 1%'6:. Pe*+esua$a* $st"-ra 9histogram adjusment : e$ut$ e$asa*+a ata aa a*!a*-e"ba*- taa3 9TM saura* 18): eu*+a$ *$a$ $*$u +a*- eb$ t$*--$ 3are*a $e*-aru$ "e abura* at"s7$r. Seba$3*+a e*+eraa* atau abs"rbs aa at"s7er a3a* e*-ura*-$ 3eeraa* aa ata +a*- $re3a aa $*ter
$a*a 5 Input
5 input pixel aa bar$s I a* 3"" ! ar$ band 3
utput
5 *$a$ pixel +a*- $3"re3s$ aa "3as$ +a*- saa
>$as
5 Se$s$ *$a$ $*$a a* *$a$ *" aa saura* 3
>?
5 brightness value atau *$a$ 3eeraa*
Paa r$*s$*+a a-"r$ta $*$ e*-ura*-$ *$a$ b$as e*-a* *$a$ b$as *$a$ 3eeraa* aa band terte*tu8*+a 9N$*-ru# 2012:.
$/1 Pen3esuaian Reresi Pe*+esua$a* re-res$ $teraa3a* e*-a* e"t *$a$8*$a$ $=e as$ e*-aata* e*-a* beberaa saura* se3a$-us. Ha $*$ $tera3a* aab$a aasaura* ru!u3a* 9+a*- reat$
u*tu3 "b+e3 terte3*tu. Keu$a* t$a saura* $ $=e a*-3a*+a e*-a* +a*saura* ru!u3a* tersebut u*tu3 ebe*tu3 $a-ra a*ar *$a$ +a*- $aat$. Cara $*$ seara te"r$st$s ua *au* seara ra3te3*+a su$t. Pe*-ab$a* $=e8$=e e*-aata* arus berua "b+e3 +a*- seara -raua beruba *a$3 *$a$*+a# aa 3eua saura* se3a$-us a* bu3a* a*+a aa saa satu saura*. 9e*"e"r"#1%%6:. Pe*+esua$a* re-res$ 9regression adjusment : aa r$*s$*+a e*-e*a3$ a*a$s$s u*tu3 e*-$e*t$7$3as$ "b!e3 ba+a*-a* atau a$r !er*$ aa $tra +a*a3a* $3"re3s$. N$a$ 3eeraa* aa "b!e3 ar$ set$a saura* $8"t aa subu 3""r$*at seara bera,a*a* ara a*tara saura* taa3 9seert$ &' saura* 1# 2# ): a* saura* $*7ra era 9seert$ &' 4#&#(:. Paa $a-ra $*$ -ar$s urus $buat e*--u*a3a* te"r$ least s(uare) er"t"*-a**+a e*-a* subu @ a3a* e*u*!u33a* besar*+a *$a$ b$as e$3$a* seterus*+a u*tu3 saura* +a*a$*. Pe*+esua$a* $st"-ra $*$ ee,at$ beberaa taa# a* as$*+a t$a3 seau *a$3. Ha $*$ $sebab3a* 3are*a t$a3 set$a $tra eu*+a$ *$a$ "b!e3 +a*- $ea u*tu3 $3"re3s$# seert$ a$r !er*$ atau ba+a*-a* a,a*. $ba*$*-3a* e*-a* te3*$3 e*+esua$a* $st"-ra as$*+a t$a3a !au berbea 9a*"e"r"# 1%%6:.
$/1/& DP, 4 Dark Pixel Correction5
Dark Pixel Correction erua3a* et"e seera*a +a*$-u*a3a* u*tu3 e*-$a*-3a* e7e3 -ea +a*- $t$bu3a* "e at"s7er aa $tra 9I*art"# 200%:. Ka$bras$ e*-a* Dark Pixel Correction $a3u3a* sebeu $tra8 $tra tersebut $-abu*-. Dark Pixel Correction aaa 3"re3s$ seera*a u*tu3 e*-$a*-3a* e*-aru at"s7er +a*- e*eru*- eerbesar *$a$ pixel a* e*!a$ suber utaa erbeaa* *$a$ pixel as$*-8 as$*- $tra 9Sus$at$# 200':. Paa 3eaaa* as$*+a# !$3a t$a3 aa at"s7er a3a ba+a*-a* aa seua eru3aa* bu$ a3a* see*u*+a $ta ba$3 $tu arat atauu* aut# se$*--a 3$ta su$t u*tu3 ebea3a**+a. Oe 3are*a $tu !$3a ba+a*-a* e$$3$ *$a$ $atas 0# $tu e*a*a3a* ba,a abura* ar$ at"s7er e$$3$ 3"*tr$bus$ u*tu3 ba+a*-a*. Ha $*$a +a*- e*!a$ ,$a+a 3"re3s$ Dark Pixel Correction. Saa satu ara u*tu3 e*-3"re3s$ e7e3 at"s7er aaa e*-$e*t$7$3as$ ba+a*-a* pixel # e*eu3a* *$a$ D$ 9 Digital $umber : a* e*-uba*+a e*!a$ 0 a* atur seua pixel a$**+a 9U$*ua# 2014:. $/1/$ EDP, 4 Enchanched Dark Pixel Correction5
Enhanced Dark Pixel Correction erua3a* ba-$a* ar$ et"e e*+esua$a* re-res$ +a*- $-u*a3a* u*tu3 e*-$a*-3a* e7e3 ar$ at"s7er u*tu3 image enhancement 9e*a!aa* $tra:. Paa et"e $*$ s$ste 3er!a*+a a$r $r$ e*-a* et"e DPC # +a$tu e*-a* arus easu33a* *$a$ range +a*- tera*tu aa actual input limits. Paa Enhanced Dark Pixel Correction teraat ua la%er +a*- berbea# $a*a la%er 3eua eb$ tera*- $ba*$*-3a* la%er ertaa a* -abar la%er* *+a eb$ ta!a 9I*art"# 200%:. $3a Dark Pixel Correction $a3u3a* u*tu3 e*-3"re3s$ 3esaaa* ra$"etr$3 ar$ suatu $tra# a3a as$ Enhanced Dark Pixel Correction eb$ $-u*a3a* u*tu3 a$3as$ terte*tu. e*-a* e*-ura*-3a* as$*- ; as$*- band e*-a* minimum digital number value8*+a# a3a set$a band a3a* e$$3$ minimal digital number ar$ *" 9N$*-ru# 201):.
$/1/1 Cut off Scattergram
Cara a$* u*tu3 e*-3"re3s$ $tra ar$ e7e3 at"s7er aaa e*-a* e*--u*a3a* $*7"ras$ ut8"77 +a*- $te*tu3a* ar$ satter-ra a*tara a*!a*- -e"ba*- 9TM (: +a*- eb$ a*!a*- a* a*!a*-e"ba*- 9saa satu ar$ TM 18&: +a*- eb$ e*e3. Pa*!a*-e"ba*- +a*- eb$ a*!a*- beraa $ -e"ba*- $*7rare e*e3 +a*eu*+a$ *$a$ abura* at"s7er $*$u# $ a$* $a3 a*!a*-e"ba*- +a*- eb$ e*e3 beraa $ batas aa+a taa3 +a* bere3ata* e*-a* batas $*7rare a* batas -e"ba*- in!rared e*e3 +a*- eu*+a$ e7e3 eb$ besar. Bar$s terba$3 $-abar3a* e*ebus $str$bus$ a*tara ua ba* +a*- $aa*-$ "r"s a*!a*- -e"ba*- eb$ e*e3 aa e*e3ata* $-$ta *uber 3""*e* e*-abur. Pe*+eesa$a* a seaa $*$ e*--u*a3a* cut*o!! 9N$*-ru# 2012:. Fu*-s$ $*$ u*tu3 eba*tu e*-a*a$s$s ata +a*- be3er!a aa ata aa "e se3tra# scattegram !u-a ber-u*a u*tu3 3as$7$3as$ ta*a# ebuat raster aera#a* ebuat poligon vektor+ Scattering ter!a$ b$a art$3e atau "e3u -as +a*- besar +a*- aa $ at"s7er ber$*tera3s$ a* e*+ebab3a* ara ra$as$ ee3tr"a-*et$3 ee*e*ar$ !aur sebe*ar*+a. >esar*+a e*+$a*-a* $*$ ter-a*tu*- aa beberaa 7a3t"r terasu3 a*!a*- -e"ba*- ra$as$# 3e$aa* art$3e a* -as a* !ara3 er!aa*a* ra$as$ 9U$*ua# 2014:.
DA"TAR PUSTAKA
a*"e"r"# Pr"!". 1%%6. Pengolahan Citra Digital) &eori dan Aplikasin%a Dalam ,idang Penginderaan -auh. Y"-+a3arta5 Fa3utas Be"-ra7$ U*$"-"r5 /"r A-r"7"restr+ Ce*ter. I*art". 200%. Identi!ikasi dan /lasi!ikasi Peruntukan #ahan 'enggunakan Citra Aster . ur*a Me$a Te3*$3 S$$. ?". I@ 91:5 18'. Kart$3a# Tat$3.# I Mae Parsa.# Sr$ Har$*$. 2012. Analisis Perubahan Penutup #ahan di Daerah &angkapan Air Sub DAS &ondano terhadap /ualitas Danau &ondano 'enggunakan Data Satelit Penginderaan -auh . L$*""-$.
Murt$# S$-$t Heru. 2012. Pengaruh Resolusi Spasial pada Citra Penginderaan -auh terhadap /etelitian Pemetaan Pengunaan #ahan Pertanian di /abupaten 0onosobo. I$a Be"at$3a. Nas$"*a 3e814 Te3*""-$ a* Keseaata* PLTN serta Fas$$tas Nu3$r Sasur$. 2004. Aplikasi Penginderaan -auh dalam Pengelolaan Sumberda%a Hutan. Mea*5 USU Suar+"*". 1%%%. Peman!aatan Penginderaan -auh 1ntuk Pemantauan Reboisasi Di Sub DAS Rora%a*/endari dalam Prosiding Pertemuan Ilmiah &ahun /e*2 'API$ 3'as%arakat Penginderaan -auh Indonesia4. a3arta.
Sus$at$# He*$. 200'. Studi A5al Peman!aatan Citra Satelit untuk Identi!ikasi Ta*--a & N"a*u*-# . )&( ; 26&. U$*ua# H$$+at$.2014. &ugas 6 Sistem Penginderaan -auh+ Y"-+a3arta5 Fa3utas Te3*$3 U*$
III/
MATERI DAN METODE
1/&/ 6a)tu dan Te!*at Pra)ti)u!
Pra3t3u e*-$*eraa* !au "u 2 te*ta*- /oreksi Radiometri $*$ $a3sa*a3a* aa5 Har$ Ta*--a
5 Seasa# 26 Seteber 201
/a3tu
5 14.00 /I> ; seesa$
Teat
5 Lab. K"utas$ Iu Keauta*# Beu*- E La*ta$ 2#
urusa* Iu Keauta*# Fa3utas Per$3a*a* a* Iu Keauta*# U*$
1/$/ Materi 1/$/& Kore)si Radio!etri
1/1
6+
Peer$3saa* N$a$ Atmospheric >$as C$tra
7+
Pe*+esua$a* H$st"-ra
8+
Pe*-ee3a* ata a* Pe*+esua$a* H$st"-ra
9+
Re-res$
PC
EPC
Cut !! Scattergram
Metode
1/1/& Pe!eri)saan Atmosheric +ias ,itra
1.
>u3a ER Ma**er 7/% e*-a* 3$3 2= aa $"* ER Ma**er 7/%
2. >u3a 7$e $tra e*-a*
3$3 icon edit algorithm
Ma**er (.0# au 3$3 icon load
C5DERMaer(0De=aesDSareata .abung:$au!al:7;<7<76;69<<=2+ers
3.
aa active 5indo5 ER
dataset au
bu3a
$$
Ba*a3a* pseudo la%er dengan cara k $3 icon duplicate
$re3t"r$
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4.
Paa set$a ba*# "*t"*+a >15 band 6# 3$3 $"* edit trans!orm limits
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&.
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# a3a a3a* u*u 0indo5
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6.
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7.
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8.
K$3 "ile au Save as u*tu3 e*+$a* ata. S$a* !ile $st"-ra e*-a* *aa !ile HISTOBRAMNAMANIM.ers aa !ile t%pe $$ ER 'apper Raster Dataset3+ers:. 3$3 O3
1/1/$/ Pen3esuaian Histora! 1.
Tutu seua 5indo5# 3eu$a* 3$3 icon edit algorithm
5indo5 ER Maer# au 3$3 icon load dataset
aa active
bu3a !ile $tra
Histogram:'uhammad$au!al$urrahman:7;<7<76;69<<=2+ers+
Lau
3$3 k &his #a%er nl%
2.
K$3 $"* duplicate
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).
Keu$a* 3$3 icon edit trans!orm limit
Lau e3 *$a$
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1/1/1/ Pen3esuaian Reresi 1/1/1/&/ DP, 4 Dark Pixel Correction! 1.
U*tu3 3"re3s$ PC aat $-u*a3a* $--u*a3a* ata +a*- saa# e*-a*
ara 3$3 icon land application 5i@ard
+
2.
Paa 5indo5 land application 5i@ard # au 3$3 next
3.
P$$ process &' Imagenar%# au 3$3 next
4.
P$$ atmospheric e!!ect correction# au 3$3 next
5.
P$$ dark pixel correction# au 3$3 next
6.
Paa dialog box speci!% an input &' dataset # asu3a* $tra +a*- a3a* $3"re3s$ berua $tra landsat:&':78Apr2>
7.
Paa dialog box speci!% an output !ilename# asu3a* *aa !ile output *+a DPC:,elum/oreksi:'uhammad$au!al$urrahman:7;<7<76;69<<=2+ers 3eu$a* 3$3 !inish+
'.
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edit algorithm
aa active 5indo5 ER Maer# au Cut aa ,and
DPC:&';+ Uba description e*!a$ $ama:$I'+
9.
Keu$a* icon edit trans!orm limits
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10. S$a* 7$e e*-a* 7"rat .ers 9 ER 'apper Raster Dataset : K$3 "ile au Save as u*tu3 e*+$a* ata. S$a* !ile $st"-ra e*-a* *aa !ile DPC:SudahDikoreksi:'uhammad$au!al$urrahman:7;<7<76;69<<=2+e rs4+ 3$3 O3
11. Tutu seua 5indo5# 3eu$a* 3$3 icon edit algorithm
5indo5 ER Maer# au 3$3 icon load dataset tea $3"re3s$ ta$.
aa active
bu3a !ile $tra +a*-
12. Keu$a* 3$3 icon edit trans!orm limit
Lau e3 *$a$
atmospheric b$as set$a band .
1/1/1/$/ EDP, 4 Enhanched Dark Pixel Correction!
1.
La3u3a* r"ses +a*- saa e*-a* te3*$3 PC $*--a a*-3a 3e84
2.
Paa 5indo5 processing &' Imager% Atmospheric# $$ enhanced dark pixel correction# au 3$3 next
8+
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4.
P$$ use &'6 as initial band a* asu3a* *$a$ atmospheric b$as*+a. N$a$ atmospheric b$as aat $$at aa 5indo5s trans!orm# au 3$3 next
5.
Paa select an option $$ sesua$ e*-a* *$a$ atmospheric b$as*+a a* tu$s3a*.*aa. !ile+output *+a.+a$tu.EPC>eu$3"res$ 'uhammad$au!al $urrahman:7;<7<76;69<<=2.ers. K$3 !inish+
;+
A3a* u*u $tra e*-a* ( band +a*- beu ter3"re3s$. Lau K$3 icon
edit algorithm
aa active 5indo5 ER Maer# au Cut aa ,and
&';+ 1bah description menjadi $ama:$I'
7.
Keu$a* icon edit trans!orm limits
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8.
%.
K$3 . "ile+au.Save+as+u*tu3 .e*+$a*.ata.S$a*. !ile+$st"-ra.*aa. !ile+ EDPC:SudahDikoreksi:'uhammad$au!al$urrahman:7;<7<76;69< <=2+ers aa !ile t%pe $$ ER 'apper Raster Dataset3+ers4+ 3$3 /
Tutu seua 5indo5# 3eu$a* 3$3 icon edit algorithm
5indo5 ER Maer# au 3$3 icon load dataset tea $3"re3s$ ta$.
aa active
bu3a !ile $tra +a*-
10.
Keu$a* 3$3 icon edit trans!orm limit e3 *$a$ atmospheric b$as set$a band+
1/1/1/./ Cut off "Scattergram!
1.
La3u3a* r"ses +a*- saa e*-a* te3*$3 EPC $*--a a*-3a 3e84
2.
Paa 5indo5 processing &' Imager% Atmospheric# $$ cut o!! # au 3$3 next+
3.
Paa dialog box speci!% an input &' dataset # asu3a* $tra +a*- a3a* $3"re3s$ berua $tra landsat:&':78Apr2>
4.
Paa dialog box speci!% an output !ilename# asu3a* *aa !ile output *+a.Cuto!!:,elum/oreksi:'uhammad$au!al$urrahman:7;<7< 76;69<<=2+ers 3eu$a* 3$3 next
5.
Ma3a a3a* taa3 aa 5indo5
6.
Paa 5indo5 ne5 map composition # 3$3 cancel
(.
Paa 5indo5 processing &' imager%*atmospheric e!!ect correction 3cut o!! value4) asu3a* *$a$ atmospheric b$as as$*-8as$*- band+ N$a$ atmospheric b$as aat $$at aa 5indo5 scattergram. U*tu3 e$at *$a$8*$a$ atmospheric b$as a$**+a 3$3 set up) uba Axis a* B Axis *+a. Lau K$3 "inish+
'.
A3a* u*u $tra e*-a* ( band +a*- beu ter3"re3s$. Lau K$3 $"*
edit algorithm
aa active 5indo5 ER Maer# au Cut aa &';+
1bah description menjadi $ama:$I'+
%.
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10. K$3 "ile au Save as u*tu3 e*+$a* ata. S$a* !ile $st"-ra e*-a* *aa !ile Cuto!!:Sudah/oreksi:'uhammad$au!al$urrahman: 7;<7<66969<<=2+ers aa
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ER
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11. Tutu seua 5indo5# 3eu$a* 3$3 icon edit algorithm 5indo5 ER Maer# au 3$3 icon load dataset
aa active
bu3a !ile $tra +a*-
tea $3"re3s$ ta$.
12. Keu$a* 3$3 icon edit trans!orm limit e3 *$a$ atmospheric b$as set$a band+
I#/
HASIL DAN PEM+AHASAN
./&/ Hasil 4.1.1.
Me!eri)sa Nilai At!os*eri8 +ias
#and $
#and '
No
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Max
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Pen3esuaian Hstora! No
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3 d n a B
4 d n a B
5 d n a B
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./&/1/ Pen3esuasian Reresi ./&/1/&/ DP, 4 Dark Pixel Correction! A/
Se2elu! Di)ore)si
No
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Max
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3 d n a B
4 d n a B
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./&/& EDPC "Enhanched Dark Pixel Correction!! A/
Se2elu! Di)ore)si
No
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Max
1.
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0
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2.
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Sesudah Di)ore)si
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6.
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2 d n a B
3 d n a B
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5 d n a B
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./&/$ Cut Off Scattergram A/
Se2elu! Di)ore)si
No
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Max
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2.
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Sesudah Di)ore)si
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Max
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1
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2.
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./$
Pe!2ahasan ./$/& Me!eri)sa Nilai Atmosheric +ias ,aha3a Berdasarkan praktkum yang elah dilaksanakan, pada mdul kedua Koreksi Radiometri ini, pemeriksaan nilai !ias atmospheric "ira dilakukan
guna mengeahui nilai !ias yang erdapa pada "ira yang akan selan#unya dikreksi dengan menggunakan mede penyesuaian hisgram. $nuk meliha nilai !ias "iranya dapa menggunakan tools : Edit Transform Limit yang se!elumnya dilah menggunakan Land Applicaon Wizard .
./$/$ Pen3esuain Histora!
Pe*+esua$a* histogram aaa e*+esua$a* teraa b$as at"s7er$3 +a*- $a3u3a* e*-a* e*aba3a* atau e*-ura*-$ *$a$ tere*a aa 5indo5 "ormula Editor . $3a *$a$ tere*a aa ,and 6 aaa 6( a3a 3$ta tu$s3a* I$P1&6*;= . Setea $a3u3a* 3"re3s$ e*-a* e*+esua$a* $st"-ra $aat3a* *$a$ band aaa 0. Pe*+esua$a*
$st"-ra
$-u*a3a*
u*tu3
e*-e
atau
eer$3sa 3eba$ $st"-ra aa set$a ba* ar$ ata $tra. ata aa a*!a*- -e"ba*- taa3 9saura* 1;): eu*+a$ *$a$ $*$u +a*eb$ t$*--$ 3are*a $e*-aru$ "e abura* ar$ at"s7er. Pe*+eraa* atau abs"rba*s$ aa at"s7er a3a* e*-ura*-$ 3eta!aa* aa ata +a*$re3a aa interval a*!a*- -e"ba*- +a*- eb$ besar seert$ saura* 4# &# (. Se$*--a ata aa band $*$ *$a$ $*$u +a*- ba$3 aaa e*e3at$ *$a$ *".
./$/1 Pen3esuaian Reresi ./$/. DP, 4 Dark Pixel Correction! %enyesuaian regresi &%' ( Dark Pixel Correcon) adalah mede lain unuk menyesuaikan hisgram dari suau "ira yang dilah. unuk mem!uka Dark Pixel Correcon , dapa dilakukan dengan "ara klik icon Land Applicaon Wizard Process T !ma"er# Atmospheric E$ect Correcon lalu pilih &%'. Koreksi akan dilakukan se"ara mats, saa kia
memasukkan
%le
"ira
Landsat&T&'(&Apr)*+ers+
yang
akan
dikreksi,
yaiu
Meau$ $st"-ra +a*- $e3 t$a saura* seara $*ee*e*# a3a aat $3etau$ *$a$ $3se tere*a saura* tersebut# asus$ +a*ea*as$ et"e $*$ aaa ba,a aa r"ses e"treta* digital "e sensor # "b+e3 +a*- eber$3a* respon spektral a$*- ea atau t$a3 eber$3a* res"* saa se3a$ searus*+a ber*$a$ *". Aab$a *$a$ $*$ ter*+ata 0 a3a *$a$ terserbut $$tu*- seba-a$ o!!set # a* 3"re3s$ $a3u3a* e*-a* e*-ura*-$ 3eseurua* *$a$ aa saura* tersebut e*-a* o!!set *+a.
./$/9 EDP, 4 Enhanched Dark Pixel Correction5
EPC 9 Enhanched Dark Pixel Correction: atau 3"re3s$ $3se -ea erua3a* et"e +a*- $a3u3a* u*tu3 e*+esua$3a* Histogram. N$a$ TM +a*- $-u*a3a* seba-a$ $*$s$a ,and aaa TM 1. Ha $*$ $3are*a3a* TM 1 $a*--a tea e,a3$$ *$a$ TM +a*- a$* a* *$a$ TM 1 sua erua3a* aua* atau sta*ar. Keu$a* 3$ta ea3a$ 3$ta e*--u*a3a* et"e 3"re3s$ Clear e*-a* s+arat TM2 G &&. *ia mengenai Enhanched Dark Pixel Correcon dengan menggunakan nilai + yang paling ke"il erdapa pilihan unuk pem!ersihan yang dilakukan yaiu ,er# Clear- Clear- oderate- .az#- dan ,er# .az# dalam hal ini kia menggunakan mede kreksi Clear dengan syara +2 adalah -55/75.
>erasar3a* aa 3"re3s$ Dark Pixel Correction a3a aat $ 3etau$# ba,a *$a$ $*$a at"s7er b$as $tra aa seuru band *$a$*+a aaa 1. I*$ e*a*a3a* ba,a r"ses 3"re3s$ e*--u*a3a* et"e Enhanched Dark Pixel Correction sua sesua$ e*-a* s+arat t"era*s$ u*tu3 *$a$ at"s7er b$as $tra aa set$a band +a*- *$a$*+a ber3$sar ar$ 8) saa$ ).
./$/' Cut*off Scattergram
Cut*o!! erua3a* ara 3et$-a aa 3"re3s$ at"s7er +a*e*--u*a3a* ua
3er!a Cut*o!! $*$ ses$7$3 value ar$ Cut*o!! aaa TM 1 saa$ e*-a* TM & a* TM (. Setea *$a$ TM +a*- aa $asu33a*# aa la%er Cut la%er TM 6 +a*- t$a3 $-u*a3a* aa 3"res$ 3a$ $*$. ar$ as$ 3"re3s$ Cut*!! Scattergram ra3t$3a* e*aat *$a$ $*$u at"s7er b$as $tra aa band 1 ber*$a$ 1# be-$tu !u-a e*-a* band 2# )# 4# &# a* (. Ha $*$ e*u*!u3a* ba,a 3"re3s$ e*-a* et"e $*$ !u-a sua sesua$ aa batas t"era*s$ *$a$ at"s7er b$as $tra. Caa+a8aa+a +a*- berasa ar$ s$*ar ataar$ e$$3$ a*!a*-e"ba*- +a*- berbea8bea. Sea3$* besar a*!a*- -e"ba*-*+a# a3a sea3$* besar ua 3eaua**+a u*tu3 e*ebus -a*--ua*. ar$ ra3t$3u $*$ aat $3etau$ ba,a a*!a*- -e"ba*- +a* a$*- besar 3eaua**+a aa e*ebus -a*--ua* aaa ,and ( sebab atmospheric b$as*+a aaa satu.
#/
9/&
PENUTUP
Kesi!*ulan Berdasarkan pada praktkum mdul ndera#a dul 2 Koreksi Radiometri
$*$# a3a aat $s$u3a* ba,a 5 1.
K"re3s$ Ra$"etr$ b$as $tra $-u*a3a* u*tu3 e*-etau$ *$a$ b$as $tra +a*- teraat aa $tra
2.
K"re3s$ atmospheric b$as $tra $-u*a3a* u*tu3 e*-etau$ *$a$ b$as $tra +a*- $e*-aru$ "e at"s7er +a*- teraat aa $tra
).
Pe*+esua$a* $st"-ra $-u*a3a* u*tu3 e
4.
K"re3s$ PC erua3a* saa satu ara u*tu3 e*-3"re3s$ e7e3 at"s7er e*-a* ara e*-$e*t$7$3as$ ba+a*-a* pixel) e*eu3a* *$a$ N 9 Digital $umber :# e*-uba*+a e*!a$ *"# a* e*-atur seua pixel a$**+a.
&.
K"re3s$ EPC $a3u3a* e*-a* e*e*tu3a* saa satu band +a*e$$3$ $*e3s b$as $*$u +a*- a$*- t$*--$.
6.
Cut*!! alue 9Scattergram: erua3a* sebua et"e u*tu3 e*-"re3s$ b$as $tra +a*- $a3u3a* e*-a* e$$ seua band e*-a* *$a$ $*e3s b$as*+a +a*- a$*- 3e$ 9$*$u:.
9/$
Saran
Sara* u*tu3 ra3t$3u sea*!ut*+a aaa seba$3*+a ra3t$3a* eb$ te$t$ aa ea3u3a* set$a a*-3a ra3t$3u# se$*--a as$ "a $tra e$$3$ 3ua$tas a* 3eerata* +a*- ba$3 +a*- ba$3.
+/
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Max
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No
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Sudah Di)ore)si
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#and & d n a # '
#and (
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./&/1 Enhanched Dark Pixel Correction "EDPC! A/
Se2elu! Di)ore)si #and
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Max
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2.
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./$/1 DP, 4 Dark Pixel Correction!
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./$/. EDP, 4 Enhanched Dark Pixel Correction5
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./$/9 Cut*off Scattergram
Cut*o!! erua3a* ara 3et$-a aa 3"re3s$ at"s7er +a*e*--u*a3a* ua
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