Bài giảng địa tin học chuyển đổi ảnh tăng cường phổ

SPECTRAL ENHANCEMENT
SPECTRAL ENHANCEMENT
TĂNG CƯỜNG PHỔ
TĂNG CƯỜNG PHỔ
NỘI DUNG
NỘI DUNG
 
 



Tổng quan
Tổng quan
 !"#$%&"'(%)$
*+$,-./0/1*//"2
3,.-.,." !"#$4
 51678'*)9"'99)9":
;9'<9)9"8" "&"=:
;9'<9)9"8" .
"&:
 >?8@."<9)9":
@."A"9'8>?:
 .8@.9"'<9)9":
99""*98B"C0D":E"F

"9'*98BG:H;@I
J " 8"9).'<9)9":
K'.93).9"8.L"="%.M
=:
Tổng quan
Tổng quan

 .,.*/$0+",).
8*N2OB*PO"'QR>Q.:
3,>S"D"" ..5" *N
%4
E"F85*'":
3,$B8*9:
%'TU,.-.,.>,4&2
VWX@0%#7I


 



  

 !"#
$ %& '( ()*+
,! -& -* ()*'
" $ %' ()+*
,! -+ ()+*


 
!"#$%#&'#($)!!*+,-./!0!1#
20!#+



)Y5Z[\>U#&,"']

)G%

W,"']^$"FM#_U0R_
`5="2"]X?"1" *N2
_U*PO$"F4
a$,"']"F
bcdde#_
U0Rb`e
a$,"']"Fb
dde#_U
0Rb`dde

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P25"0%>O)"'$,$
0+",)
1. Bin đổi s hc
1. Bin đổi s hc

34567+##$#8)
/$$ $0

123


- .4- #56,7#89
0 .4% 1:;


. %40 /:;



% %4. <:;

=>#?  #@A 8B
' '40 $3

C#56;DEF
+ G4' 6,7#HI6
7#EF
G -4G D!23

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L!
& '4. D!23

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Bin đi s hc
'U4
g*/4ND5"0N"C0D""'Q$\
%\>0C"D."'R"C.^
0%"C.^"-""%#7

9:;<
1. Bin đi s hc

0!28)1!9:;<
1. Bin đi s hc
MN?@O=M@>P?>B4=M@>Q?>B
 M@> ?>


#A#R//S G '

#A#$R % .

/TU$V/S . 0

MU?W>> 0 -

XAMN?@#!0((-YZRUN@/
1. Bin đi s hc
NDVI - ví dụ
NDVI - ví dụ

)9
;*"4
V
;*"J4
V
'9*
W*
h'9"
NDVI= ( NIR - VR ) /
NDVI= ( NIR - VR ) /
( NIR+VR)
( NIR+VR)
=>0%!"#9:;<

?@AB9:;<B?@ACD2E>+(*
F!G8$HI0.J2!G8$H

I0+K.FLMN
1. Bin đi s hc
1. Bin đi s hc
3?*/4N",P"#G"'Q
$0GGU,"']i[W,"']jk[
"-1,0N"C0D"0%!"
Xác định giá trị bức xạ (radiance),
phản xạ (reflectance)
E*"l4
3,,"']
"'?
"1U"2"'
"'A9
)9"*"^
$*"
"-1
Xác định giá trị bức xạ (radiance),
phản xạ (reflectance)
E*"l4
3,,"']
"'?
"1U"2"'
"'A9
)9"*"^
$*"
"-1
ac"m"',!")n"
"' 8"'5$:
V*909
WU"QB)n""' H'

o9"9kp[q990"
9
167>=&2
8"'5$:
Xác định giá trị bức xạ (radiance),
phản xạ (reflectance)
Xác định giá trị bức xạ (radiance),
phản xạ (reflectance)
;*"`rrrr85%"D.0R
%:
Land surface temperature
;*"`\s*/5$"'"')9"*"
Ảnh binary (ảnh logic)

0%A,!?K,!O#6PQR+PN

!#6S8P#9SRT9:SUVSU

W1$W!0!.1X
Y
KZ#6P#.PRPPNSUK[PRPPNDOP
Y
KZ#P6#NT9:K\PP8TP#ND\68PO#6+P
TP#
2. Bin đi logic
Logical Operator
Logical Operator
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2. Bin đi logic
Ứng dụng của Ảnh Logic
Ứng dụng của Ảnh Logic
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2. Bin đi logic
Ví dụ về masking
Ví dụ về masking
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