The current pansharpening type.
[Visual Basic .NET] Public Property PansharpeningType As esriPansharpeningType
[C#] public esriPansharpeningType PansharpeningType {get; set;}
[C++]
HRESULT get_PansharpeningType(
esriPansharpeningType* pSharpeningType
);
[C++]
HRESULT put_PansharpeningType(
esriPansharpeningType pSharpeningType
);
[C++]Parameters
pSharpeningType [out, retval]pSharpeningType is a parameter of type esriPansharpeningType
pSharpeningType [in]pSharpeningType is a parameter of type esriPansharpeningType
Product Availability
Description
Pan-sharpening is a process of transformaing a set of low special resolution multispectral images to high spatial resolution color images, by fusing a co-georegistered high spatial resolution panchromatic image.
ArcGIS 9.2 provides four pan-sharpening methods: Simple, Brovey, IHS, and ERSI pansharpening. These methods are all based on the following general model:
A pixel value of a Pan image is considered a weighted average of Red, Green, Blue, and (optional) Infrared components:
P = R*RW + G*GW + B*BW + I*IW
1 = RW + GW + BW + IW
where RW, GW, BW, and IW are weights for Red, Green, Blue, and Infrared components. P, R, G, B, and I (as wll as P', R', G', I') represent the input and output pixel values of the panchromatic, Red, green, blue and Infrared bands respectively.
Brovey method:
DNF = (P-IW*I)/(RW*R+GW*G+BW*B)
R' = R*DNF
G' = G*DNF
B' = B*DNF
I' = I*DNF
IHS method:
RGBToHSI(R, G, B, H, S, INTENSITY)
INTENSITY = P-I*IW
HSIToRGB(H, S, INTENSITY, R', G', B')
ESRI method:
WA (Weighted averate) = R*RW + G*GW + B* BW + + I*IW /(RW+GW+BW+IW)
ADJ (Adjusted value) = P- WA
R' = R+ADJ
G' = G+ADJ
B' = B+ADJ
I' = I+ADJ
Mean method:
R' = 0.5 * (R + P)
G' = 0.5 * (G + P)
B' = 0.5 * (B + P) < /P >