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2 Replies and 2987 Views
download 64 bit ENVI 4.7 for Linux 2987 2
Started by Deleted User
Hi, all
I hope to download one, but my email has not been certified for a long time. I really hope to use it, and I hope someone can help me.
thanks in advance.
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2 |
2987 |
01 May 2010 09:19 AM |
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1 Replies and 1216 Views
Miniun requeriments for ENVI 1216 1
Started by Deleted User
Hi, I'm going to purchase an ENVI Licence plus some modules for satellital imagenery treatment but I can not find which the minimun requiriments (hardware requirements) for ENVI to work properly, please help me with information about.
&160;
Marlon
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1 |
1216 |
29 Apr 2010 02:21 PM |
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5 Replies and 1701 Views
Atmospheric correction error 1701 5
Started by Deleted User
I&180;ve a problem with Atmospheric Corrections. I&180;m working with Landsat TM with date 24-11-2009,
All paramethers are correct, and the Window error is like this:
ACC error: avhead:
IDL error:
ACC_AVHEAD_Error -- some channels found outside 100 to 30000 cm-1 range
ACC_AVHEAD
ACC_HYPER2
ACC_ACC
ENVI_ACC_EVENT
ENVI_FLAASH_PROCESS_MANAGER
IDLRTMAIN
$MAIN$
Maybe someone can tell me what I can do, with this problem, Thanks.
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5 |
1701 |
23 Apr 2010 02:20 PM |
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1 Replies and 1407 Views
Envi error in PDS image reading 1407 1
Started by Deleted User
hi,
&160;&160;&160;&160;&160;&160; I recently downloaded a PDS image (.img, .dtm) format with all supporting pds files, but when i load it in envi it can't able to retrieve the map projections, it just displays the image.
&160; &160;&160; Now-a-days there are more pds images available but envi doesn't support in obtaining the projection details while loading the pds image. Suggest me how to load PDS image along with map projected.&160;
&160;
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1 |
1407 |
23 Apr 2010 10:33 AM |
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1 Replies and 1217 Views
generating a DEM from sat. imagery 1217 1
Started by Deleted User
Hi everyone,
&160;
We have a fairly high-resolution image(s) that we want to use to generate a dem from GPS points around the site area. Is this possible and can anyone steer us in the direction of a possible tutorial
&160;
Thanks,
&160;
Ted
&160;
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1 |
1217 |
23 Apr 2010 09:11 AM |
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1 Replies and 1313 Views
local variance within the mask 1313 1
Started by Deleted User
Hello there,
I would like to calculate the occurrence measure of variance (lets say by 3x3 window) but only within the specified area, without considering the masked-off pixels. The ENVI's built-in option provides the edges with the extremely higher variance values because of the consideration of masked-off pixels.
Thank you in advance
M.
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1 |
1313 |
23 Apr 2010 01:31 AM |
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1 Replies and 1203 Views
multi-date landuse aggregation 1203 1
Started by Deleted User
Hello!
I have 6 date landuse classification results and want to combine them into single map (showing no change, vegetation to non-vegetation, and so on). Each classification contains 6 broad classes (same code and same sequence).
Is there any way to do this in ENVI 4.5. I have done this in GIS but I had only two date raster layers which I have converted to vector format, union two vector polygons and then queried each combination.
It seems difficult this way with 6 diffrent raster layers.......
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1 |
1203 |
22 Apr 2010 11:39 PM |
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2 Replies and 1249 Views
3d virtual model from data/imagery in ENVI 1249 2
Started by Deleted User
Hi everyone. We are new to the ENVI product line and had a quick question. After we are done orthorectifing our satellite image(s)..we wanted to 'export'&160; those images dem to create a 3d web 'virtual' model.
Could anybody suggest the 'best' software package to use if we wanted to export these items from ENVI via a 'output' file type and load seemlessly into a .vrml creator type program or similiar
&160;
...
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2 |
1249 |
22 Apr 2010 01:40 PM |
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8 Replies and 2053 Views
orthorectify without RPC 2053 8
Started by Deleted User
Hello,
I have an IKONOS image that was gereferenced BUT NOT orthorectified. I have a 30m DEM that corresponds to my image area but I don't have the RPC file. The IKONOS vendor told me he cannot give me the RPC data file because I did not order it at the time I ordered the images.
Is there any way to orthorectify the IKONOS image without RPC or ground control
Thank you
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8 |
2053 |
22 Apr 2010 08:05 AM |
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1 Replies and 1361 Views
Georeferencing a binary file 1361 1
Started by Deleted User
Hello all,
I have a problem and I'm not sure that ENVI the capability to do this, although I would think it should. I have a binary file that I created in IDL from a satellite product that I want to georeference in ENVI. I also have a lat and lon ascii file which has the location of every grid point in my image file. I want to know if there is a fairly easy way to georeference this image file based on the lat/lon files I have.
Thanks,
Steve
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1 |
1361 |
21 Apr 2010 09:41 AM |
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4 Replies and 1130 Views
atmospheric correction 1130 4
Started by Deleted User
hello all,
&160;i am interseted in the field of atmopsheric correction.i am now reading about the science of flaash module. but i stooped at a certain point that is how can i get A,B,S,La . isn't here any one that can help me to understand that science the equations that can i get these unknows and how can i insert the other parameters as a function of flaash's equation
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4 |
1130 |
21 Apr 2010 06:53 AM |
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9 Replies and 4342 Views
Scale Factors 4342 9
Started by Deleted User
I&180;ve seen various posts talking about scale factors, but still I don&180;t know where I could obtain this information (My image is Landsat7).
Also, there&180;s a calibration utility in Basic Tools -> Preprocessing (Envi 4.5). I load my Tiff image and don&180;t know what to put in the next fields:
- Data Acquisition Band.
- Scale Min/Max.
- &191;Get Calibration Parameters from Web (data acquisition path row band)
Finally, what will I obtain how can I use it in FLAASH when loadi...
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9 |
4342 |
21 Apr 2010 05:00 AM |
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3 Replies and 1291 Views
Problem with ENVI EX`s algorithm (SVM) 1291 3
Started by Deleted User
Normal
0
false
false
false
EN-US
JA
AR-SA
MicrosoftInternetExplorer4
Hi everyone
I have problem with feature extraction. I want to perfo...
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3 |
1291 |
21 Apr 2010 03:11 AM |
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1 Replies and 946 Views
spectral matching for hyperspectral data 946 1
Started by Deleted User
When matching hyperspectral data reflectance with spectral library using SAM method or whatever in ENVI,
if the range of wavelength of dataset is 2-2.5, does ENVI using just same range of wavelength of spectral library
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1 |
946 |
20 Apr 2010 11:10 PM |
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0 Replies and 1094 Views
looking for best 3d web model program to export our sat. imagery/elevation data to. 1094 0
Started by Deleted User
Hi everyone. We are new to the ENVI product line and had a quick question. After we are done orthorectifing our satellite image(s)..we wanted to 'export'&160; those images dem to create a 3d web 'virtual' model.
Could anybody suggest the 'best' software package to use if we wanted to export these items from ENVI via a 'output' file type and load seemlessly into a .vrml creator type program or similiar
&160;
Thank you so much. and sorry for the vagueness and lack or correct jargon! :)
Te...
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0 |
1094 |
20 Apr 2010 02:54 PM |
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2 Replies and 1465 Views
Best way to programmatically get ENVI version? 1465 2
Started by Deleted User
I'm currently doing this by looking at the last two characters of the path returned by envi_get_path().&160; Is there a better way
&160;
&160;
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2 |
1465 |
20 Apr 2010 12:50 PM |
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1 Replies and 1074 Views
Landsat data processing from USGS 1074 1
Started by Deleted User
What is the exact procedure of Landsat TM (ETM) images processing downloaded from the USGS in ENVI 4.6 I was trying to: 1) assigh the wave lenghts, gains ,offset valus via the header editor, 2) use the Basic tools - Preprocesing - Calibration utilities - Landsat TM, 3)stack the single bands and convert to BIL for further processing. But I got negative values in area where should be no data/0 values - edge of the image (where the original images with DN are 0). Thanks for help.
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1 |
1074 |
20 Apr 2010 11:18 AM |
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1 Replies and 1784 Views
negative value of FLAASH output for Landsat 1784 1
Started by Deleted User
Hi all,
I ran atmospheric correction for Landsat ETM and the result has negative value.
The Landsat statistics:
Basic Stats&160;&160;&160; Min&160;&160;&160; Max&160;&160;&160;&160;&160;&160; Mean&160;&160;&160;&160;&160; Stdev
&160;&160;&160;&160; Band 1&160;&160;&160;&160;&160; 0&160;&160;&160; 255&160; 59.255267&160; 48.261881
&160;&160;&160;&160; Band 2&160;&160;&160;&160;&160; 0&160;&160;&160; 255&160; 49.079807&160; 42.286283
&160;&...
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1 |
1784 |
20 Apr 2010 01:06 AM |
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1 Replies and 1201 Views
What happened to Goode's Homolosine projection? 1201 1
Started by Deleted User
Our department just upgraded from ENVI 4.4 to ENVI 4.7, and somewhere along the way, we seem to have lost the Goode's Homolosine map projection. It is not available in the map projections list, and old files that were in that projection, when opened in ENVI 4.7, now appear as having an 'Arbitrary (Map Based)' projection. Was the removal of this projection intentional Or do I possibly have a corrupted installation (using Mac OSX version)
Goode's Homolosine is still one of the options in t...
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1 |
1201 |
18 Apr 2010 06:06 PM |
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9 Replies and 2257 Views
Converting Raster to Vector 2257 9
Started by Deleted User
Hi guys and girls, I'm having a bit of an issue with ENVI, I have created a raster file of varying angles to look at glacial direction over a period of time. I want to convert this to a vector file and import it into ArcGIS, however when I go to the convertion part ENVI asks for a DN value, I don't know what this is, how can I find out what this is Without knowing it won't let me create the vector file I need.
Many thanks
Duncan
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9 |
2257 |
15 Apr 2010 10:10 AM |