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1 Replies and 3080 Views
Extracting raster values from point vector location 3080 1
Started by Deleted User
Hi, I want to extract the pixel value of the vector points from a stack of raster and secondly I want to establish a rectangle around that point and extract the value in that rectangle. How can I do that Thanks in advance.
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3080 |
by Deleted User 06 Jun 2019 10:20 PM |
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5953 |
by Deleted User31 May 2019 11:50 AM |
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2 Replies and 2025 Views
ENVI Modeler PanSharpening Batch Processing 2025 2
Started by Deleted User
I need help setting up a model to batch perform 'NNDiffuse Pan Sharpening'. I have 10 multispectral Landsat images and 10 panhromatich landsat images after Dark Susbtraction process. I want to loop through each 2-image set (multi, panhromatic) and generate a pansharpening output. I tried to do this using 2 datasets, 2 iterators, generate filename, and NNDiffuse Pan Sharpening. I get the error 'Nodes cannot be traced back to more than one iterator: &91;NNDiffuse Pan Sharpening&93;. What is ...
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2025 |
by Deleted User15 May 2019 12:50 AM |
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40 Replies and 6454 Views
Creating a region of interest 6454 40
Started by Deleted User
Hi, I am trying to create region of interests around several vector point locations so that I can extract the raster values out of that region. I have been working with different tools but couldn't find exactly what I am looking for. Really stressed. Can anyone help me Thanks in advance. Rajeev
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6454 |
by Deleted User04 May 2019 11:12 AM |
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7 Replies and 3018 Views
Mosaicking Sentinel 2 Data 3018 7
Started by Deleted User
Hello, I am trying to mosaic 4 scenes of Sentinel 2 data together and the program continues to crash every time i attempt to do so. I know that you cannot mosaic the bands that are different resolutions but i am only trying to mosaic the 10m bands. Does anyone know why this keeps crashing
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3018 |
by Deleted User04 Apr 2019 09:29 AM |
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7 Replies and 6185 Views
Thor de-stripe and Spear vertical stripe removal 6185 7
Started by Deleted User
Hello, I am trying to remove vertical stripes from an image. I have previously used THOR de-stripe with moderate success. However, this time the results produce a blank raster with all -Nan values. I've also tried to use SPEAR vertical stripe removal, with similar results. The mask highlights all pixels with a value at any mask value, and therefore I cannot complete the wizard to complete Spear destripe. The original image looks fine in Envi. I have verified that the original raster has va...
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by MariM04 Oct 2018 07:42 AM |
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0 Replies and 3633 Views
Radiometric Calibration Processing 3633 0
Started by Deleted User
I am using my own atmospheric correction method to determine bottom of atmosphere radiance of Worldview 2 data, and want to apply the radiometric calibration tool to convert the resulting image to BOA reflectances using the equation (pi.L.d^2)/(Esun.sin(theta)) as provided in the ENVI documentation. My routines remove much of the original metadata that came with the imagery. That documentation states 'If the input file does not contain metadata for reflectance gains and offsets, ENVI computes T...
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3633 |
19 Jun 2018 12:41 PM |
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0 Replies and 3221 Views
Harris 3221 0
Started by Deleted User
Hello! I want to ask if it is possible to find underground tunnels with Harris Geospatial Solutions What else besides the software will I need Thanks!
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3221 |
11 Jun 2018 12:56 AM |
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0 Replies and 3379 Views
processing of meteosat-8 Indian ocean data coverage (IODC) using Envi 5.3 3379 0
Started by Deleted User
I want to georefrence and process my meteosat-8 Indian ocean data coverage (MSG-1 IODC) in native format (.nat) using Envi5.3 , I tried with envi classic 5.3IDL and Envi5.3 but I couldn't do that. I found an extension in Internet 'ENVI MSG tools' and installed it. after that I could read my native format but when I used 'GEOREFRENCE MSG' option in 'Map' the coordination of my georefrenced map was incorrect, It seems that this extension has a problem with MSG-1 Indian ocean data coverage. what s...
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3379 |
29 Apr 2018 07:18 AM |
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1 Replies and 6611 Views
Landsat Images not opening in ENVI 5 6611 1
Started by Deleted User
When I tried to upload the MTL document into envi 5 it tell me that it is not a Tiff. I was using landsat 5 to 7 TM. I know I am not doing something wrong because Landsat 8 oli and landsat Mss are working just fine. Please help! Thank you
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6611 |
by MariM20 Mar 2018 12:07 PM |
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1 Replies and 3965 Views
IAR Reflectance Correction (and others) 3965 1
Started by Deleted User
Hello! Much time I ask myself why the IAR Reflectance Correction don't allow to use a mask file. Many images have borders and the IAR use the Mean Spectral of all Pixels, so it includes the border and the border have a lot of influence are many pixels (ASTER/LANDSAT)... I think this correction will be better is you only consider the pixels with information. In the same issue, if you previously edit the envi header and set the ignore value to 0 (for example), this will ignore the borders in a ...
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3965 |
by MariM01 Dec 2017 08:12 AM |
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1 Replies and 2621 Views
rigorous orthorectification 2621 1
Started by Deleted User
Hi!i'm trying rigorous orthorectification with ENVI, i have two WorldView images and a DEM, all in TIF file format. I run all the steps but at the end the software can't complete the process, as 'rigouros orthorectification can't complete, the procese failed'. Someone can tell me what is the problem Do you know if i have to save the output file in a particular format Thank you !
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by MariM16 Nov 2017 09:38 AM |
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1 Replies and 5202 Views
Export TIFF File 5202 1
Started by Deleted User
I want to save the image as geotiff file format in ENVI 5.3 desktop,however,I entoured the problem which is written 'SaveRasterFile failed:IDLnaMetadata Error:naGetMetadata - GetMetadataJob failed.' So,I tried it in ENVI 5.3 Classicd and I got the TIFF file successfully in the end.However,the TIFF file doesn't contain the projection. I don't know the reasons for the above problems.Can you give me the answer Thanks for your sincere reply.
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5202 |
by MariM28 Aug 2017 08:10 AM |
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2 Replies and 2950 Views
Mosaic 2950 2
Started by Deleted User
Hi,everyone. I have downloaded several Sentinel-1 images, then I made radiometric terrain correction and convert DN value to dB. The first mosaic is made by using of two processed images in ENVI. and land area is also be removed.The masked mosaic output's size is about 4.8 G, and then two masked mosaic images( one individual mosaic image size is about 4.8G) are be made second mosaic. However,the process is very slowly this time. About 17 hours later, the mosaic is only about 75. My quest...
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by Deleted User21 Jun 2017 01:31 AM |
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2 Replies and 2668 Views
ROI 2668 2
Started by Deleted User
Hi,everyone. I have create several different ROIs in an satellite image,and I want to get the statistics of every different ROI's mean value rather than overall ROI's mean value.I have found XROI in IDL can show individual samples’ information, however these information couldn't be saved into files.So I want to know the way to get the goals. Thanks for your suggestions in advance.
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2668 |
by Deleted User20 Jun 2017 05:55 AM |
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0 Replies and 4310 Views
CloudCompare 4310 0
Started by Deleted User
Hello, I was wondering if anyone had any experience with importing .bin files that were generated using the open source CloudCompare. I am able to import .las files that I created with CloudCompare, but I have had no luck importing meshes i created and saved as .bin, .ply, .txt, of DXF files. Thank you, John
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4310 |
17 May 2017 02:01 PM |