|
|
|
|
|
|
2 Replies and 1531 Views
Dose ENVI have standard routine for FLAASH module? 1531 2
Started by Deleted User
Hello!
&160;&160;&160; I want to do some atmosphere correction to a arrary of images by FLAASH Module in IDL. Dose ENVI have standard routines for FLAASH module
Thank you for your help!
does anyone give me some tip
|
|
|
|
2 |
1531 |
01 Nov 2008 01:18 AM |
|
3 Replies and 2794 Views
MODIS Conversion Toolkit - How to add batch processing 2794 3
Started by Deleted User
Hi,
I am new to ENVI and IDL. I would like to do reprojection of 700 files of MODIS images. From MODIS Conversion Toolkit, I could do reprojection. But it takes only one file. Therefore, i would like to know how to add batch processing in the following program.
I want to reproject to UTM, WGS 84, Zone 43.
Could someone help me, please....................
Thanks in advance
Shijo
This is program from MCTK
-------------------------------------------------
;Level 1B example
&160;&16...
|
|
|
|
3 |
2794 |
31 Oct 2008 08:17 AM |
|
1 Replies and 1807 Views
Projection MODIS 1807 1
Started by Deleted User
Hi,
Have projection MOD04_L2
as a georeferenced image MOD04_L2 in ENVI 4.5
Thanks
|
|
|
|
1 |
1807 |
28 Oct 2008 12:20 AM |
|
6 Replies and 1801 Views
problems in FLAASH and MODIS 1801 6
Started by Deleted User
I am a student from China, now I have some problems in dealing with FLAASH.
I want to correct a MODIS image by FLAASH model,
The data is produced by "MODIS Converse Toolkit", I think the input data is no problem,
It is always get an error.
"ACC error: lsmooth2:
&160;IDL error:
&160;ACC_LSMOOTH2: Cannot continue with smoothing calculation
"
But I can setting "use adjacency correction" NO , this error will be fine. What should I do
And I ha...
|
|
|
|
6 |
1801 |
23 Oct 2008 10:40 AM |
|
1 Replies and 1607 Views
ENVI_CONVERT_FILE_COORDINATES 1607 1
Started by Deleted User
Hello!
I'm working with ENVI/IDL.
When I try to convert map coordinates to their corresponding x,y pixel coordinates, after doing the instruction:
ENVI_CONVERT_FILE_COORDINATES, fid_tiff_B, gcp_x, gcp_y, gcp_mapX, gcp_mapY
the variable gcp_x&160; takes negative values... It could be possible
How can this problem be solved
Cheers,
Sara
|
|
|
|
1 |
1607 |
22 Oct 2008 10:14 AM |
|
3 Replies and 1533 Views
ENVI Feature Extraction Forum 1533 3
Started by Deleted User
Post your questions, comments or ideas about ENVI Feature Extraction here.
|
|
|
|
3 |
1533 |
21 Oct 2008 10:43 AM |
|
3 Replies and 1524 Views
Landsat Geotiff 1524 3
Started by Deleted User
I have over 100 Landsat images that I am beginning to work with.&160; Since all of the imagery available through Glovis is in GeoTIFF I find myself in a bit of a pickle.&160; The calibration utility within ENVI is especially useful when it automatically enters the calibration values.&160; NLAPS work well by entering all bands at once.&160; When I calibrate GeoTIFF files it needs to be done one layer at a time then subequently stacked.&160; Is there something that I am missing in the sense t...
|
|
|
|
3 |
1524 |
10 Oct 2008 12:45 PM |
|
5 Replies and 1924 Views
Registration difference after FLAASH 1924 5
Started by Deleted User
Hello,
I am experiencing a problem with registration after applying FLAASH atmospheric correction to my set of TM and ETM images. I have a process for warping images to a single base image. After I process that automatic registration, I then apply FLAASH to the warped images. The problem is, however, after I apply FLAASH to the warped image, the registration between warped and the base image are no longer consistant.
My questions are these:
Why is there a registration difference after a...
|
|
|
|
5 |
1924 |
09 Oct 2008 07:04 AM |
|
0 Replies and 1596 Views
ROI *.img header file question. 1596 0
Started by Deleted User
I just began on a project recently with an established code base. Currently, one of the procedures in the spotlight at the moment is one which creates a lat long mask, a region of interest, specified by the user. Here is my issue.
The envi calls used to create this mask are ENVI_CREATE_ROI, ENVI_DEFINE_ROI, ENVI_SAVE_ROIS, ENVI_GET_ROI, ENVI_GET_ROI_DATA, and the ENVI_ROI_TO_IMAGE_DOIT functions. These create a mask and a header file just fine, except for one issue. We would like to use a .25 d...
|
|
|
|
0 |
1596 |
08 Oct 2008 09:59 AM |
|
1 Replies and 1467 Views
Sending more than one results to the Available Bands List Window 1467 1
Started by Deleted User
Can somebody help me please I have successfully written three separate IDL functions that calculate NDVI, PRI, NDRE and they all work perfectly, however I would like to incorporate all these separate function into one. When trying to do this the function only sends the results of one computation to the Available Bands List Window. How can I make sure that all three (NDVI, NDRE and PRI) are sent to the Bands List Window.
|
|
|
|
1 |
1467 |
08 Oct 2008 03:36 AM |
|
0 Replies and 1414 Views
Sending more than one results to the Available Bands List Window 1414 0
Started by Deleted User
Can somebody help me please I have successfully written three separate IDL functions that calculate NDVI, PRI, NDRE and they all work perfectly, however I would like to incorporate all these separate function into one. When trying to do this the function only sends the results of one computation to the Available Bands List Window. How can I make sure that all three (NDVI, NDRE and PRI) are sent to the Bands List Window.
|
|
|
|
0 |
1414 |
08 Oct 2008 03:35 AM |
|
0 Replies and 1509 Views
How to burn ditches and streams through roads and culverts? 1509 0
Started by Deleted User
I have a 1 meter resolution DEM LIDAR data set and I need to burn ditches and streams through the roads and culverts in order to derive a stream network.&160; Does anyone know a good way to do this&160; Thanks
Robert
|
|
|
|
0 |
1509 |
07 Oct 2008 09:07 AM |
|
2 Replies and 1357 Views
FLAASH UNKNOWN HSI 1357 2
Started by Deleted User
Hi everyone,
I want to apply FLAASH to an&160;airborne&160;hyperspectral sensor&160;image (AHS).&160;The&160;ASH has a spectral resolution&160;of 28 nm in certain water absortion bands, so I dont want to apply the water&160;retrieval algorithm.
I have defined&160;channel definition file only with aerosol retrieval channels:
KT upper channels = { 30 31 32 33 34 35 36 37 38 }
KT lower channels = 8
But Ive got the next error message:
Problem: The FLAASH program exited with the follo...
|
|
|
|
2 |
1357 |
06 Oct 2008 03:42 PM |
|
0 Replies and 1498 Views
FLAASH UNKNOWN HSI 1498 0
Started by Deleted User
Im trying to run FLAASH with an airborne hyperspectral sensor. This sensor has a spectral resolution of 28 nm in the water absortion bands, so I have decided not to&160;aply the water retrieval algorithm.
I&160;supose that&160;I have to define a hyperspectral channel definition&160;file with the channel I want to use in the aerosol correction only:
KT upper channels = { 30 31 32 33 34 35 36 37 38 }
KT lower channels = 8&160;
I get the next error:
Problem: The FLAASH program exited wi...
|
|
|
|
0 |
1498 |
06 Oct 2008 03:29 PM |
|
0 Replies and 1554 Views
envi4-->arcgis9 1554 0
Started by Deleted User
could you explain why the envi classified images losed data when they were imported to arcgis with .img or .bil format
|
|
|
|
0 |
1554 |
05 Oct 2008 12:38 PM |
|
2 Replies and 1529 Views
Band Ratios 1529 2
Started by Deleted User
I have written a simple function to do a band ratios with the aim of expanding it.
function RedEdgeModel, b1, b2
result = float(b1/b2)
return, result
END
The problem I have with this code is the result is an image made up of zeros (black) what could be wrong with my code because when I use the band ratios in ENVI-TRANSFORMATION-BAND RATIOS everything work okay.
|
|
|
|
2 |
1529 |
03 Oct 2008 07:39 AM |
|
4 Replies and 3289 Views
how to support HDF5 in ENVI 3289 4
Started by Deleted User
some satellite data are released in HDF5 data format. how to support HDF5 in ENVI, or some plugin to read hdf5 data. I use the "KNMI HDF5 Data Reader Plug-in for ENVI 4.0" but I got an error.
I encountered a problem while using KNMI HDF5 Data Reader Plug-in for ENVI 4.0 applied at http://www.creaso.com/english/12_swvis/13_envi/envihdf5/envihdf5.htm. It seems to be a Warning Dialog with info as below: The following error was encountered: Attempt to call undefined procedure/function:...
|
|
|
|
4 |
3289 |
28 Sep 2008 03:31 AM |
|
3 Replies and 1672 Views
creating a geotiff 1672 3
Started by Deleted User
Hi there,
I have some georeferenced MASTER data that I am trying export as a geotiff file for use in ArcMap.&160; In ArcMap, I can add the data from the file I create by doing ENVI File --> Save File As --> GeoTIFF.&160; However, the image shows up as completely black in ArcMap.&160; Has anyone else had this problem&160; Is there another format in which to save my ENVI image so its recognizable by ArcGIS programs
Thank you,
Betsy
|
|
|
|
3 |
1672 |
25 Sep 2008 11:44 AM |
|
2 Replies and 1838 Views
Seadas HDF Expor to ArcGIS Format 1838 2
Started by Deleted User
Hi: Sorry fer my delayed reply.
I tried your recommendations without success. I am going to explain the procedure in more detail.
1. Downloaded L3 MODIS K490 images(4Km).
2. Open&160; it in ENVI 4.4, it is an HDF dataset
3. Use a ROI to make a spatial subset of the global image. Load the Image. Save Image as (tried: ENVI, ERDAS, GEOTIFF, etc.)
4. Open ArcMap 9.3. Load image (warning of unknown spatial reference appears). Load shapefile (data in State PLane NAD 83 or I use another shapefile...
|
|
|
|
2 |
1838 |
24 Sep 2008 08:34 AM |
|
0 Replies and 1564 Views
Enhanced PCT images as input to Maximum Likelihood 1564 0
Started by Deleted User
Hi everyone!
I have been looking in literature if anyone has actually done gaussian stretch to PCT images or other derivatives of original image data (textural images like ASM, for example) not just for visual enhancement but also as spectral&160;transformations to further enhance the information in the data to which ML would be applied. I was assuming this would create more distinct information classes from ROIs and also improve the separability measures from the ROIs.
I would really appreci...
|
|
|
|
0 |
1564 |
20 Sep 2008 03:41 AM |