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1 Replies and 1062 Views
How can make RPC coefficent 1062 1
Started by Deleted User
Hi everyone
I have a question about how can make Rational polynomial coefficent could you help Thank you
Best Hadi
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1 |
1062 |
17 Aug 2010 01:40 AM |
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0 Replies and 1122 Views
Automatic training report for neural networt based training 1122 0
Started by Deleted User
Dear all,
I have a problem to print training report in text format. I only get the training report in the graph plot (while training the software) which is not that useful in terms of intrepretation. Can anyone suggest me how to to generate training reports for the training site based on neural netwok application in text format or how to convert graph plot report to text. I am sure that the software will have a function to generate automatic training report.
Your help on the matter wil...
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0 |
1122 |
16 Aug 2010 11:25 PM |
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0 Replies and 968 Views
automatic text report for neural network training 968 0
Started by Deleted User
Dear all,
I have a problem to print training report in text format. I only get the training report in the graph plot (while training the software) which is not that useful in terms of intrepretation. Can anyone suggest me how to to generate training reports for the training site based on neural netwok application in text format or how to convert graph plot report to text. I am sure that the software will have a function to generate automatic training report.
Your help on the matter wil...
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968 |
16 Aug 2010 11:22 PM |
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2 Replies and 967 Views
ASTER 1A/1B calibration formulae 967 2
Started by Deleted User
I would like some clarification on tech tip 4114.
It describes the calibration formulae that ENVI applies to convert raw DN values to physical radiance values for ASTER 1A and 1B data.
I see that for ASTER 1A calibration, the formula c1 * DN / c2 c0 in effect applies 4100 different calibration formulae to the data – one for each column of pixels (and derived from the RadiometricCorrTable). For ASTER 1B, however, the data has already been calibrated to radiance, so I can’t s...
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2 |
967 |
14 Aug 2010 12:24 PM |
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2 Replies and 1167 Views
FLAASH correction of EO-1 Hyperion MTL data 1167 2
Started by Deleted User
Greetings,
I imported an EO-1 Hyperion L1T MTL image cube into ENVI using Hyperion Tools and checked all three options (Output ENVI Mask Image, Convert BSQ to BIP Interleave, Output FLAASH Scale Factors). I then attempted atmospheric correction using FLAASH while trying to follow the EO-1 User Guide (Beck, 2003, http://edcsns17.cr.usgs.gov/eo1/documents/EO1userguidev2pt320030715UC.pdf) using the directions for FLAASH.
The only deviation from manual is that I did not input the IFOV as I ...
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2 |
1167 |
13 Aug 2010 09:45 AM |
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5 Replies and 1333 Views
Problem for making 3D imag of PRISM data 1333 5
Started by Deleted User
Hello every one
I have stero image from PRIM data of ALOS satellite. I do not know how make 3D in ENVI. Could you help me for this problem. Thank you for your guidance foreward.
Best Hadi
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5 |
1333 |
13 Aug 2010 03:38 AM |
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2 Replies and 1054 Views
Problem in reading the HSI data 1054 2
Started by Deleted User
Dear all,
Has everybody downloaded and read these valuable data They are publicly and freely available at:
http://www.foi.se/FOI/Templates/ProjectPage____9131.aspx
http://www.foi.se/FOI/templates/Page____9189.aspx
They are in ENVI format, but are not readable and visible in ENV!
Do I need to do something special!
Thanks in advance
SH
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2 |
1054 |
12 Aug 2010 10:05 AM |
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0 Replies and 1010 Views
solved... 1010 0
Started by Deleted User
Thanks Whammer-
I changed the idl code from:
map_info=envi_map_info_create(/GEOGRAPHIC, mc=mc, name='Geographic', ps=ps, type=1)
to:
map_info=envi_map_info_create(/GEOGRAPHIC, mc=mc, name='Geographic Lat/Lon', ps=ps, type=1)
and it works great...
did I say thanks
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1010 |
11 Aug 2010 04:04 PM |
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3 Replies and 1213 Views
error flaash on Ubuntu 64 karmic koala 1213 3
Started by Deleted User
Hello Everyone
I have the next problem when corrected image ASTER on Flaash
CC error...
IDL error: -379
DLM_LOAD: Error loading sharable executable.
Symbol: IDL_Load, File = /usr/local/itt/idl71/bin/bin.linux.x86_64/modtran4v3r2.so
libg2c.so.0: cannot open shared object file: No such file or directory
in context: acc_dlm_check:
calls:
ACC_DLM_CK ACC_RUNMODTRAN ACC_HYPER2 ACC_ACC ENVI_ACC_EVENT
ENVI_FLAASH_PROCESS_MANAGER $MAIN$
bye
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3 |
1213 |
11 Aug 2010 11:24 AM |
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1 Replies and 1273 Views
separation of rois 1273 1
Started by Deleted User
Hello everybody,
I generated a ROI with the bandthreshold to ROI tool in ENVI (4.7 SP2). The ROI consists of several single objects (composed of several pixels), which I want to separate to determine their size (by counting the pixels). Is there a way to split up a single ROI into the single objects
Thanks in advance,
christine
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1 |
1273 |
09 Aug 2010 02:56 AM |
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1 Replies and 1169 Views
Projection problems... 1169 1
Started by Deleted User
Hello-
I am working through a year's worth of MODIS data and calculating EVI. I have the IDL script working fine, but am having some issues with the input MODIS files.
Upon loading each one, I get the following warning:
"File:
E:\File Path\Filename.bsq
Projection:Geographic
Problem: An unknown Projection is referenced in the map information. Unable to use."
But if you look in the hdr file(se bottom of page) , I am not sure what is missing from the raw MODIS...
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1 |
1169 |
08 Aug 2010 07:53 AM |
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2 Replies and 1817 Views
Carriage Return 1817 2
Started by Deleted User
Hello All-
I am working on a project that processes through a year's worth of MODIS reflectance data and calculates EVI.
I have the IDL script working fine, but am having file issues...
When each MODIS file loads i get the following error Pop-up:
"File:
Problem: No Carriage returns found. Unable to read this file as an ASCII file."
I OK out of this and the script continues to process and works fine, until the next image loads.
I assume that this ...
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2 |
1817 |
08 Aug 2010 07:36 AM |
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1 Replies and 1245 Views
when building an RCP for orthorectification, the display shows only one band 1245 1
Started by Deleted User
Hello.
I recently had problems while trying to orthorectify some images. I build an RGB false colour image, save it, and when I try to orthorectify it by building an RCP, the program loads only one band (not the RGB comopsite) on the GCP display. CAn anyone help me
Thanks
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1 |
1245 |
05 Aug 2010 07:07 AM |
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1 Replies and 1159 Views
Image profiles in ENVI 1159 1
Started by Deleted User
I have a multispectral image (8 bands) and want to see X or Y profile of all eight bands at a time (not just for the bands used for display the CIR image).
How do I do that
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1 |
1159 |
05 Aug 2010 12:26 AM |
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1 Replies and 1334 Views
Georefrencing .hdr files 1334 1
Started by Deleted User
I have .hdr files,imported by Polsarpro 4.0, of PALSAR L1.1 data.I have to georefrence it. I am trying to make GLT to georefrence it. But unable to make GLT. How to make GLT from product information or suggest me other way to georefrence the image.
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1 |
1334 |
31 Jul 2010 12:02 AM |
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1 Replies and 1039 Views
Radiance calibration 1039 1
Started by Deleted User
Hi,
I need to calibrate some images from DN to radiances; more specifically, SPOT 4 & 5, Ikonos and Quickbird images.
I have been searching for specific formulas and parameters of each one, but I can´t find them.
Could somebody please indicate me some direct links
Thank you very much!!
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1 |
1039 |
29 Jul 2010 06:46 PM |
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1 Replies and 1088 Views
georeference a .png file 1088 1
Started by Deleted User
Hello-
I am new to ENVI and IDL, and am having a hard time figuring out how to assign a projection to a .png file.
The projection is in a .tfw format.
Thanks-
Eric
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1 |
1088 |
29 Jul 2010 02:51 PM |
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1 Replies and 933 Views
ASTER TIR not displaying correctly 933 1
Started by Deleted User
Hi All,
I've recieved ASTER data in L1B format as a set of GEOTIFF images and I'm trying to stack them in ENVI. I used GRASS to patch the images since I'm using two reticules for the study area and exported the images as GEOTIFFs for use in ENVI. All of the SWIR bands were opened succesfully in ENVI, but I'm having trouble with the VNIR and TIR bands. Both the VNIR and TIR bands were read by ENVI as if they are in ENVIs BIP format and as if they are RGB images instead of single bands. I adju...
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1 |
933 |
27 Jul 2010 09:41 AM |
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3 Replies and 3323 Views
Why the NDVI value is over -1 and 1 after atmospheric correction? 3323 3
Started by Deleted User
I am try to calculate NDVI value after atmospheric correction in ENVI.
The atmospheric correction process is as describe below.
http://www.ittvis.com/UserCommunity/UserForums/tabid/58/forumid/29/threadid/10588/scope/posts/Default.aspx
If calculating NDVI by ENVI vegetation analysis module, the value range is within -1 and 1, however, if I calculate the NDVI by the band manth tools :(float(b4)-b3)/(float(b4)b3), the histogram value shown that there are many value are far greater than...
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3 |
3323 |
27 Jul 2010 03:16 AM |
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3 Replies and 953 Views
Why the FLAASH processing is failed? 953 3
Started by Deleted User
I am try to finish a atmospheric correction of TM image by the FLAASH model, but it failed all the time. The error message said that a space problem, however, I have 4G physical memory and 23G free disk space. It same that no the case.
Before the atmospheric correction, I have calibrated the image by Landsat calibration model, and converted the file into BIL format, and the FLAASH parameters as follow:
;
;ENVI FLAASH PARAMETERS TEMPLATE (4.7 SP2)
;Written Mon Jul 26 17:17:16 2...
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3 |
953 |
26 Jul 2010 03:41 AM |