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2 Replies and 1241 Views Dose ENVI have standard routine for FLAASH module?  1241  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 1241
01 Nov 2008 01:18 AM
3 Replies and 2406 Views MODIS Conversion Toolkit - How to add batch processing  2406  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 2406
31 Oct 2008 08:17 AM
1 Replies and 1445 Views Projection MODIS  1445  1 Started by  Deleted User Hi, Have projection MOD04_L2 as a georeferenced image MOD04_L2 in ENVI 4.5 Thanks
1 1445
28 Oct 2008 12:20 AM
6 Replies and 1437 Views problems in FLAASH and MODIS  1437  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 1437
23 Oct 2008 10:40 AM
1 Replies and 1263 Views ENVI_CONVERT_FILE_COORDINATES  1263  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 1263
22 Oct 2008 10:14 AM
3 Replies and 1177 Views ENVI Feature Extraction Forum  1177  3 Started by  Deleted User Post your questions, comments or ideas about ENVI Feature Extraction here.
3 1177
21 Oct 2008 10:43 AM
3 Replies and 1196 Views Landsat Geotiff  1196  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 1196
10 Oct 2008 12:45 PM
5 Replies and 1538 Views Registration difference after FLAASH  1538  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 1538
09 Oct 2008 07:04 AM
0 Replies and 1250 Views ROI *.img header file question.  1250  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 1250
08 Oct 2008 09:59 AM
1 Replies and 1201 Views Sending more than one results to the Available Bands List Window  1201  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 1201
08 Oct 2008 03:36 AM
0 Replies and 1150 Views Sending more than one results to the Available Bands List Window  1150  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 1150
08 Oct 2008 03:35 AM
0 Replies and 1159 Views How to burn ditches and streams through roads and culverts?  1159  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 1159
07 Oct 2008 09:07 AM
2 Replies and 1014 Views FLAASH UNKNOWN HSI  1014  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 1014
06 Oct 2008 03:42 PM
0 Replies and 1153 Views FLAASH UNKNOWN HSI  1153  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 1153
06 Oct 2008 03:29 PM
0 Replies and 1270 Views envi4-->arcgis9  1270  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 1270
05 Oct 2008 12:38 PM
2 Replies and 1200 Views Band Ratios  1200  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 1200
03 Oct 2008 07:39 AM
4 Replies and 2621 Views how to support HDF5 in ENVI  2621  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 2621
28 Sep 2008 03:31 AM
3 Replies and 1349 Views creating a geotiff  1349  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
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25 Sep 2008 11:44 AM
2 Replies and 1480 Views Seadas HDF Expor to ArcGIS Format  1480  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 1480
24 Sep 2008 08:34 AM
0 Replies and 1243 Views Enhanced PCT images as input to Maximum Likelihood  1243  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 1243
20 Sep 2008 03:41 AM
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Page 107 of 137 << < 105106107108109 > >>