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From: Harendra on 1 May 2010 10:00
I am working on Remote sensing satellite Image classification (supervised) using fuzzy logic . Include 2 steps
1. generate training data set for test images
2. Then use of fuzzy classification

The result i obtained is satisfactory when test images of true color type ,but when i use FCR image then the classification result is very depressing . There is not enough information regarding FCR image in matlab help . I don't know how to handle the FCR image .
any help is very much appreciated .




From: Walter Roberson on 1 May 2010 21:32
Harendra wrote:
> I am working on Remote sensing satellite Image classification
> (supervised) using fuzzy logic . Include 2 steps 1. generate training
> data set for test images 2. Then use of fuzzy classification
> The result i obtained is satisfactory when test images of true color
> type ,but when i use FCR image then the classification result is very
> depressing . There is not enough information regarding FCR image in
> matlab help . I don't know how to handle the FCR image .
> any help is very much appreciated .

Perhaps using im2rgb (or is it image2rgb?) to create a true color matrix
from the indexed image would be useful?
From: Harendra on 1 May 2010 22:24
Walter Roberson <roberson(a)hushmail.com> wrote in message <vC4Dn.103143$u62.50(a)newsfe10.iad>...
> Harendra wrote:
> > I am working on Remote sensing satellite Image classification
> > (supervised) using fuzzy logic . Include 2 steps 1. generate training
> > data set for test images 2. Then use of fuzzy classification
> > The result i obtained is satisfactory when test images of true color
> > type ,but when i use FCR image then the classification result is very
> > depressing . There is not enough information regarding FCR image in
> > matlab help . I don't know how to handle the FCR image .
> > any help is very much appreciated .
>
> Perhaps using im2rgb (or is it image2rgb?) to create a true color matrix
> from the indexed image would be useful?

thanks for quick reply

when i used imfinfo('filename') then it shows me the image is of true color type ,
false color image use particularly for shifting of IR or near IR band to Visible region . IR Band is represent by read band .similarly other band shifted and blue band of true color image removed and replaced by other color band . False color image is in visible range also. I think the my problem is relate to training data set . As the image i am using is of 5.8mx5.8m pixel resolution(1 pixel of image equal to 5.8meterx5.8 meter on ground). asking user to select the point for classes like vegetation which is of red color is not a good choice as the resolution of Remote sensing image is low .

I want to know
1. the other method of training data set generation when the accuracy is much important.
2. How to test accuracy of training data set .
any help ??
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