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5 Replies and 1721 Views
ENVI´s FLAASH parameters 1721 5
Started by Deleted User
Hi, I have some questions about these FLAASH parameters:
1) In "Advanced Settings" -> "For non-nadir Looking Instruments". I have SPOT5 images: need I to edit the angles or keep the defaults also, which label in the .DIM file gives me the Zenith and Azimuth angle
2) In "Multispectral Settings" -> Kaufman-Tanre Aerosol Retrieval. Which Upper & Lower Channel should I put for SPOT5 images
Thank you for your help. Regards
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5 |
1721 |
29 Jan 2010 05:21 AM |
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1 Replies and 1526 Views
exporting values of desired pixels 1526 1
Started by Deleted User
hi, does Envi 4.4 have such a function:
user inputs the co-ordinates for, say, 10 pixels, from which he wants to extract the pixel values. Envi then exports these 10 values to an output file.
thank you in advance!
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1 |
1526 |
25 Jan 2010 05:37 AM |
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2 Replies and 3215 Views
Set DN Value in converting raster to Vetor? 3215 2
Started by Deleted User
Hi everybody!
I'm a newbie in ENVI. I have a problem when converting data from Raster to Vector. I don't know what basic to set DN value for 1 band.
I use Landsat TM 7 bands.
Thanks for pay attention!
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2 |
3215 |
24 Jan 2010 08:36 PM |
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1 Replies and 1260 Views
Register two aerial images from differing overhead angles 1260 1
Started by Deleted User
Hello,
I am new to ENVI and am curious as to whether ENVI (a) can accomplish what I need, and (b) can do it automatically/programmatically.
My application is that I have two overhead ENVI aerial images that are taken of a general area (image areas overlap), but they can differ in the angle with respect to nadir they were taken. The scale/altitude of the images can be considered similar, but the images can differ in translation, rotation, and view angle of the ground. What I want to do is to re...
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1 |
1260 |
22 Jan 2010 02:31 PM |
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8 Replies and 2246 Views
Installation Woes 2246 8
Started by Deleted User
I've been trying to install the evaluation version of ENVI 4.7 on Windows 7 32bit. On two different machines I've had the same issues: The program installs fine until it gets to the the 'Publishing Product Information' part. Then it freezes for several minutes and finally reports the following error:
'Error 1935. An error occurred during the installation of assembly component {1E507087-0819-45E0-A01F-C8B3B9A1E18E}. HRESULT: 0x800736FD'
After accepting this error, the installer attemp...
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8 |
2246 |
22 Jan 2010 01:05 PM |
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4 Replies and 1397 Views
SPOT-5 and FLAASH 1397 4
Started by Deleted User
Hi, I&180;m new and need to correct two TIFF images (PAN & multispectral of the same image) with ENVI 4.5 FLAASH module.
Please correct me when I get wrong:
First, I open the metadata.dim multispectral file with ENVI. (need I to merge PAN & multi images to correct them)
Then, basic tools->Convert Data (BIL, BIP, BSQ) and I get a file.BIP
Basic Tools->Preprocessing->Calibration Utilities->FLAASH
Import Radiance Image->(Select file.BIP) and select "Use single scale factor for all ...
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4 |
1397 |
21 Jan 2010 03:35 AM |
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1 Replies and 1234 Views
ENVI_CONVERT_FILE_MAP_PROJECTION problem 1234 1
Started by Deleted User
Hi there,
I'm having a problem processing MODIS images in ENVI. I'm trying to write a script that will mask a MODIS file, then change the projection from the sinusoidal MODIS projection to lat/long. I can't get ENVI_CONVERT_FILE_MAP_PROJECTION to work, though. I keep getting a vague error:
'reg_warp_doit: An error has occurred during processing
Error: "Array dimensions must be greater than 0." The result may be invalid'
I've copied my code below. I'm at my wits' end, so would be ve...
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1 |
1234 |
20 Jan 2010 04:12 PM |
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2 Replies and 1785 Views
first derivative 1785 2
Started by Deleted User
Hi all,
I have a hyperspectral image. I would like to find the first and second derivative of every band to do some analyses. Is there any way to do this is ENVI I'm afraid I don't know how to use IDL, but if someone has some code I'd give it a shot.
Thanks
SV
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2 |
1785 |
19 Jan 2010 01:05 PM |
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1 Replies and 2531 Views
Error opening file!!! 2531 1
Started by Deleted User
I am using ENVI 4.7
a BIG problem or error in ENVI 4.7
I want to open files in img/tiff/hdf
all of these files can not be opened.
prompt me 'expression must be a structure in this context:E_UNITS_CONV(ENVI_GLOBALS1_COMMON)'
why
What should I do
I also setup ENVI 4.2 in my computer
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1 |
2531 |
18 Jan 2010 06:49 PM |
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1 Replies and 1243 Views
translation and languages pack 1243 1
Started by Deleted User
Greetings all
At my research group we are planning to acquire ENVI. One of the major criteria, defined by the COTS analysis team, is the translation of EO COTS.
What I wanted to know is:
1- Does ENVI distributed with multiple languages pack
2- If not, is it possible to easily translate ENVI functions and even IDL development interfaces/modules added to the ENVI
Thanks
Luis
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1 |
1243 |
18 Jan 2010 10:40 AM |
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0 Replies and 1801 Views
test 1801 0
Started by MariM
this is a test
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0 |
1801 |
18 Jan 2010 08:27 AM |
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1 Replies and 1523 Views
ENVI Segmentation 1523 1
Started by Deleted User
Hi everyone,
I am writing an essay based on ENVI feature extraction tool. About the references, I am searching which kind of algorithm ENVI uses to segment images. I know that the "merging segments" is based on the work from Robinson, Redding and Crisps from 2002 but I do not know how ENVI extract the segments in the previous step.
Does anyone know the references about the first segmentation step
Thanks
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1 |
1523 |
18 Jan 2010 03:49 AM |
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1 Replies and 1648 Views
classification using temperature parameters 1648 1
Started by Deleted User
i want to know the different steps&160; to have&160; temperature map using ASTER IMAGE (type HDR)
thank you for your help.
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1 |
1648 |
16 Jan 2010 09:13 AM |
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2 Replies and 1344 Views
Opening Lidar Data 1344 2
Started by Deleted User
Hi,
I have Lidar DSM data in *.img (File name: uofc_lidar_dsm_NAD83_UTM11.img) format. Can anyone please tell me how to open this file using ENVI. Thank you in advance.
Mustafiz
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2 |
1344 |
15 Jan 2010 11:55 AM |
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4 Replies and 3365 Views
Band Math Conditional Statements 3365 4
Started by Deleted User
An earlier post (by area_51) was very helpful in describing the use of conditional statements in band math. I have a follow-on question that I hope someone can address. Using this earlier post as an example, I expanded this to produce -999 as a background, and to calculate a more complex expression for my non-background values:
exp = '(b1 le 0) * (-999) (b1 gt 0 )*(float(b2) float(b1))'
This works great -&160; I can add/multiply/subtract those bands in the expression for my non-background...
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4 |
3365 |
15 Jan 2010 09:28 AM |
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3 Replies and 1918 Views
FLAASH error 1918 3
Started by Deleted User
Hi everyone,
I am trying to run FLAASH on a CASI image (72 bands, 2-byte unsigned int. BIL) but I keep receiving an error message and the routine quits without completing the processing. I am using the following parameters:
Sensor type Unknown-HSI
No water or aerosol retrieval
No spectral polishing
No wavelength recalibration
No tiled processing
Single scale factor for all bands (1.0000)
Set FWHM to band spacing
and each time I attempt to run FLAASH I get the followi...
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3 |
1918 |
11 Jan 2010 01:40 PM |
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1 Replies and 1864 Views
Image sharperning 1864 1
Started by Deleted User
I have a 12-layer MODIS image stack, and I have a NDVI image from Landsat. I tried to sharpen the MODIS image to 30m. I used PC spectral sharpening. I got this error messge:
envi_pc_sharpen_doit: An error has occurred during processing
Error: "TRIQL: Too many iterations in tqli." The result may be invalid
I tried 6-layer stack and 3-layer stack, and got the same error messages.
I'll very appreciate any help. Thanks!
Zhuoting
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1 |
1864 |
08 Jan 2010 02:51 PM |
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0 Replies and 1533 Views
Writing Exp in the Band Math 1533 0
Started by Deleted User
I have another problem for this vegetation index,any body can help me I so many times write this equation, but has a problem. Could you helping me I have original on the paper you can see, I attached.
How about this vegetation index GEMI: Global Environmental Monitoring Index How can write this expression
How can write this expression Just I write so many times this expression;
2*((float(B4)^2-(float(B3)^2))(1.5*float(B4))0.5*float(B3))/((float(B4)float(B3)0.5))*(1-0.2...
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0 |
1533 |
30 Dec 2009 01:19 AM |
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0 |
1404 |
29 Dec 2009 11:56 PM |
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1 Replies and 1551 Views
Helping for writting exp in the Band math window 1551 1
Started by Deleted User
Normal
0
false
false
false
EN-US
JA
AR-SA
MicrosoftInternetExplorer4
I have a problem to write a expression on the band math for create veg...
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1 |
1551 |
27 Dec 2009 07:22 AM |