Questions tagged [multi-band]
Raster data with more than one band/channel of information. Also known in imagery as multi or hyper spectral.
187
questions
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0answers
11 views
Imagery Alpha and Mask channels: when should each be used?
Gdal supports both Mask and Alpha channels. In what circumstances are they best applied? How to choose between them?
For example the nearblack utility to change image collar pixels to nodata can use ...
0
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1answer
13 views
Using NASA Above landcover imagery in place with Qgis
Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain is composite tiled classified imagery dataset covering the years 1984-2014. The format is elegant and clever but hard to use. Each ...
0
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1answer
19 views
Using NASA Above landcover imagery in place with ArcGIS
Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain is composite tiled classified imagery dataset covering the years 1984-2014. The format is elegant and clever but hard to use. Each ...
0
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1answer
30 views
Merging the bands of a single image in GEE python API
I currently have a single image with 3 bands with different turbidity data, all from the same region. The pixel values of the 3 bands do not overlap with each other. I would like to merge these 3 ...
1
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0answers
48 views
How to mosaic/align multispectral georeferenced images into one merged file with GDAL
I am trying to work my head around how to make mosaic from georeferenced multispectral images. Header of those images already contains information about GPS location.
Separate image is saved as *.tif ...
0
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0answers
52 views
Converting multiband .nc files using R to upload to Google Earth Engine
I am new to using .nc files and am struggling to get the output I need in GeoTIFF format to upload to GEE.
I have downloaded the 2015 zip file of fire data from the CCI archive here: http://data.ceda....
0
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0answers
9 views
Opened image appears corrupted
I have a hyperspectral image that I am fusing with a multispectral image (of the same scene) on Matlab. I also have a reference image of the final result in order to be able to compare and evaluate ...
0
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0answers
31 views
Using ModelBuilder iterator for calculating raster bands for multiple rasters in ArcMap
I have a raster for each year from 1985-2015, so in total 31, and I need to calculate the mean annual value for each of them. Every raster has 12 raster bands which represent the months. The ...
0
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1answer
72 views
Composite bands in ArcGIS Pro and Raster Stack in R produce different multiband raster
I have 8 rasters (GeoTIFF; LANDFIRE layers) that I need to stack into a multiband raster for use with downstream analyses (i.e., within FlamMap). I have a workflow using Python and ArcPy and would ...
3
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2answers
73 views
I want to create NDVI of multiple raster using ArcPy
I have multiple raster data which are layer stack. Now I want to create NDVI of each raster data. I am stuck in the code, I developed a script but dose not generate any output.
import arcpy, os
from ...
1
vote
1answer
51 views
Asking for the precise detail of gdal_translate's output .xyz multiband file format (when converting from GRIB)
gdal_translate is able to convert a multidimensional GRIB data file (Copernicus ERA5 reanalysis) with the following command-line command (gdal_translate.exe from 11/2016):
gdal_translate source.grib ...
0
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0answers
113 views
Rename bands in a multiband raster in ArcGIS 10.x
I have imported a multiband raster in .tif format into a geodatabase using ArcGIS 10.7 and want to rename the bands to something more descriptive. However, I can't find out how to do this easily.
Does ...
0
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1answer
29 views
Band Compositing
This is probably a trivial question, but is it possible to create band composites using bands of different resolutions (10m, and 20m)? I tried that and exported the resulting rasters to JPEG and it ...
0
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0answers
27 views
Extract by Mask, Retain all bands (time) of a multidimensional raster dataset
I have a multidimensional crf dataset covering a grid of temperature data over time. My aim is to use extract by mask with a shapefile area that I'm interested in as a mask and retain the ...
0
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1answer
97 views
Convert multiband GeoTIFF to dataframe using all bands (R, Python or QGIS) [closed]
I have a GeoTIFF file with 2 bands and I want to create a dataframe like this:
pixelID | band1Value | band2Value
I would like to do it in R, Python or QGIS.
As far as what I have searched, I could ...
1
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0answers
21 views
Set display options for more than one layer in ArcGIS Pro
I am trying to set display options for more than one layer in the ArcGIS Pro software.
The task is to activate 3 raster layers at the same time in order to create a new pseudocolor map with bands.
I ...
0
votes
1answer
350 views
Rename images of ImageCollection to add band name at the end on Google Earth Engine
Helllo everyone, I am trying to batch download an image collection using Rodrigo E. Principe's tool but I want to download each band seperately by image.select function.
When I download a single band, ...
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0answers
20 views
Visualizing True Color Remotely Sensed Images
I am following this tutorial (which is also on GitHub) and I can't seem to understand this line of code:
np.clip(eopatch.data['BANDS'][closest_date_id][..., [2, 1, 0]] * 3.5, 0, 1)
I am guessing ...
0
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0answers
44 views
Geoserver multiple nodata values ECW in alpha band
I want to combine multiple geotiffs to one ECW in FME and then upload the ECW in Geoserver. The responding nodata is stored in the alpha band. However with ECW compression (even when choosing 0 for ...
2
votes
2answers
195 views
How to make a VRT with an input raster containing multi bands?
I have 3 different rasters each containing 2 bands. Such as :
Input1.tif B1 B2
Input2.tif B1 B2
Input3.tif B1 B2
I want to build a vrt with the B2 of each raster. With gdalbuildvrt I always get ...
0
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0answers
28 views
How build NDVI based on multi-bands on different files (one band - one file) in geoserver?
I am using a geoserver. I have several bands (b1, b2, b3..etc) I need to build NDVI based on them, for this I need to have access to each of the bands, but since they are in separate files, when I ...
2
votes
1answer
24 views
Bandmath error when calculating RVI in Landsat data
I'm using the LANDSAT/LC08/C01/T1_RT_TOA dataset. Using this I want to calculate the RVI of a region. This is done by dividing the Near Infrared band (B5 in the dataset) by the Red band (B4 in the ...
0
votes
1answer
98 views
Export multiple bands from netCDF into GeoTIFFs
I am working with a NetCDF file that has multiple subsets and each subset has multiple bands. I would like to take one subset and export each of the 28 bands into its own GeoTIFF. I thought that ...
1
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1answer
23 views
Does geospatial server software exist which can support dynamically generated imagery as a WMS?
Here's the situation:
Input:
A bunch of data (NetCDF) that contains seperate variables/arrays for R/G/B channels.
Desired output:
Web service (e.g. WMS) that can serve simulated true-color imagery ...
1
vote
1answer
86 views
Mosaic multiple multi-band rasters into a single multi-band raster using QGIS
I have >50 four band rasters that I would like to mosaic into a single four band raster. SAGA mosaic doesn't seem to work since it flattens the rasters out and combines them into a single band mosaic. ...
0
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0answers
54 views
Is it possible to extract wavelength from pixel values?
I am new here to GIS and believe this can be better worked-out here than SO, but please do correct me if I am wrong.
I am working with Python to review metadata of satellite images. Specifically, I ...
1
vote
1answer
148 views
Write multi-layer TIFF using GDAL
I am working with 4 band GeoTIFF images. I used GDAL to open these images. Each layer needs pre-processing and after completion of processing, I need to write back into a TIFF file. I used the below ...
0
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0answers
15 views
How do I obtain a signature from a certain pattern of a multiple band (composite) raster?
I am using the topographic position index (TPI), which is derived from a high-resolution DEM. This index shows the difference between a central point and the mean elevation in the neighbourhood around ...
1
vote
1answer
386 views
GEE - Add date to band names in ImageCollection
I'm new to the GEE platform and I'm struggling with something very basic. I want to extract pixel values by points from an ImageCollection and I want my ouput to be a table in a wide format. To do ...
1
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1answer
50 views
Verifying that it is ok to use multiple band combinations as I create polygons for my supervised classification?
I am sorry if this is a naive question, but I am very new to remote sensing analysis.
I am conducting a supervised classification in Google Earth Engine. I want to verify that as I develop my ...
0
votes
2answers
52 views
Generation of pixel statistics in multiband raster [duplicate]
I want do generate for each pixel the average and standard deviation or better the variance coefficient for raster with 57 bands. The average should be average of the value for all bands. The result ...
3
votes
2answers
261 views
Reducing a multi-band image and keeping the bands
I would like to calculate the area of all non-zero pixels on multiple bands of an image. My idea was to use
var areaImage = image.multiply(ee.Image.pixelArea());
To do that I will need an image ...
2
votes
0answers
63 views
Calculating proportion of pixel containing vegetation (from sentinel 2 image stack)
My task is to perform a supervised classification of landcover across a huge (20,000+ hectare) property. I need to classify into three classes: forest, regenerating trees, and soil. We use s
Sentinel-...
2
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0answers
145 views
Layer stacking Multispectral reflectance imagery in ERDAS Imagine 2016
I have Green, red, Red edge and Near infra-red reflectance maps captured with a Parrot Sequoia camera and post processed with Pix4D.
They are all Single Float Tiff files, around 500Mb in size.
I ...
2
votes
1answer
114 views
Downloading only one band in Google Earth Engine without the RGB bands
I have calculted the NDVI of specific plot and download it in order to run analysis in QGIS. The image on GEE had only one band: the calculted NDVI, but whenever I open it on QGIS I have 4 bands: NDVI ...
1
vote
1answer
294 views
Export image collection to pixel value across bands
I am trying to export an image collection to a 2D table where :
axis 0 are pixels over the collection
axis 1 are bands from the image collection
I would loose spatial information, as pixels would ...
1
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0answers
24 views
Multi-temporal stack does not include all bands
I made a stack of images for a multitemporal series for 7 months (one per month with 5 bands) with gdal, but the stack that comes out to me consists of a single band for each month, probably the first....
0
votes
1answer
25 views
ArcGIS Desktop and Pro read incorectly one band raster as two
This seems silly, but I have spent too much time searching and making my life over difficult -meaning I am doing something wrong:
I have a TIFF file that is read correctly as one band by tools such ...
2
votes
1answer
107 views
R Code for Hyperspectral Indices
I am planning to use R to read hyperspectral images and calculate hyperspectral indices. There seems to be scripts available online, but mostly for multispectral images. For instance, this code for ...
1
vote
1answer
120 views
Merging multiple satellite bands for science data set rasters?
I am using MODIS satellite imagery data for one specific derived band. The problem I am running into is that it is a MCD19 SDS layer, which contains different bands for each orbit overpass at a ...
1
vote
1answer
114 views
What is the practical use of panchromatic band in remote sensing? [closed]
In Landsat and other satellite imagery, panchromatic band is also included (which normally has high spatial resolution). I want to know what is the practical use of a panchromatic image? Is it a must ...
1
vote
1answer
252 views
Create multiband raster from a single band raster with fields
I have a raster which has a single band containing what is effectively a lookup code. When I open the raster in ArcMap and open the attribute table I can see several fields which I guess come from the ...
1
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0answers
47 views
Merging satellite images error
I am trying to merge 3 satellite images of 3 times. The images are median images. I have used the following code but there is an error.
var maskL8 = function(image_m) {
var qa = image_m.select('BQA'...
0
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0answers
55 views
Python code error when making fusion of multispectral image and DEM
I tried to fuse 4 multispectral bands from Landsat 8 with resampled SRTM, Aspect, Slope. It should contain 7 bands: R,G,B,NIR,DEM,Aspect,Slope. The code execution generates output raster, MS bands are ...
0
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0answers
36 views
Multi-seasonal image stacks in GEE
I want to stack layers of 3 images (median images from 3 seasons). I want to differentiate the land uses in different seasons. for example, there will be more waterbodies in rainy season but less in ...
0
votes
1answer
222 views
Batch changing of Raster Bands of Multiple Rasters in ArcGIS Desktop?
I have a ton of rasters in my ArcGIS project, each with 4 bands.
At the moment, I am changing the raster bands, one by one, for each file:
Red becomes Band 2
Green becomes Band 1
And I am setting ...
1
vote
1answer
378 views
Get non-masked values of multiband numpy masked array
I am working on a multiband image with python.
I imported my image as a masked numpy array of shape (bands, rows, cols) using rasterio. The mask is the same for all bands.
I would like to get the ...
2
votes
0answers
112 views
Generate an accurate DTM with photogrammetry?
I generated imagery from a low flying drone (40 M AGL) equipped with a mica sense RedEdge multi-spectral camera and have processed the imagery in PIX4D and now am attempting to do some analysis in ...
1
vote
1answer
70 views
Is there an alternative function which does the same thing as clip raster by masked layer on QGIS?
I am having some technical problems with the clip raster by masked layer and I faintly remember using a different method a long time ago for a similar problem. Anybody familiar with another function?
0
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0answers
486 views
How to merge a color multiband raster to a singleband color raster?
Background:
At Arc Desktop 10.6.1, I have an aerial photo tif image: 4-band (RGBA), 16-bit, unsigned integer. When displayed, it shows as natural-color. Here's a screen snip of just a small portion ...
