Questions tagged [multi-band]
Raster data with more than one band/channel of information. Also known in imagery as multi or hyper spectral.
160
questions
1
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1answer
16 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
46 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
75 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 ...
0
votes
1answer
37 views
How to visualize large .tif file which is a multispectral image
This image is supposedly a 5m multispectral multi-temporal (LISS IV) data of a place in India called Satna. It is a .tif format file of size around 32 MB. Image should typically have greenery(...
2
votes
1answer
42 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
30 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 ...
0
votes
0answers
15 views
Landsat 8 multispectral and panchromatic imageries
I want use this code here:
https://github.com/reachsumit/deep-unet-for-satellite-image-segmentation
to detect trees but do not understand how can i get 8-band satellite imagery. This images in Data\...
1
vote
0answers
19 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
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1answer
15 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 ...
1
vote
1answer
49 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 ...
0
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1answer
30 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
39 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 ...
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0answers
34 views
Creating a raster file with multiple attributes from numpy arrays?
I have 2 numpy arrays (same dimension) which I would like to use to create a TIF raster file with 2 attributes. I'm trying to do so with rasterio with the following piece of code:
out_meta = .....
...
1
vote
1answer
84 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
30 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'...
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votes
0answers
25 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
votes
0answers
61 views
BandOffsets.length is wrong!
I am trying to process large GeoTIFF images using GeoTIFF reader provided by Geotools library. However while processing the image getting below error:
org.geotools.data.DataSourceException: ...
0
votes
0answers
25 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 ...
1
vote
1answer
92 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
164 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
74 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
34 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
95 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 ...
2
votes
2answers
140 views
Palleted/Unique values rendering not displaying in QGIS
I have a multi-band raster in the form of a GeoTIFF. The raster contains 4 bands. Band 2 has 27 unique values ranging from 151 - 281. I would like to display each value discreetly using the 'Paletted/...
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0answers
10 views
Inner workings of GRASS reclassification on QGIS. How does it work with multiband rasters?
I have a 33 band raster layer I need to reclassify. I tried using GRASS module inside QGIS and it worked out fine, except that it outputs a raster with a single band. Which band of the 33 did it ...
1
vote
1answer
63 views
Calculating CIredEdge from Sentinel 2 composite image and adding as Band in Google Earth Explorer?
This is a follow-up question to Seeking Function to calculate red-edgeNDVI in Google Earth Engine?
I’ve added the redEdgeNDVI band to the image collection by mapping the function over the collection ...
1
vote
0answers
129 views
GDAL - Polygonize multiband raster and save pixel values of each band to corresponding attribute fields
I'm trying to polygonize 2 band raster(which was previously reclassified) and put values of each band into seperate attribute table column. Both bands overlap each other perfectly.
This piece of code ...
1
vote
1answer
127 views
Open a mutliband raster, edit values in one of the bands, and overwrite the raster using Python/Rasterio?
I have numerous multiband rasters (36 band) in which preserving the band order is important for future processing. One of the bands often contains erroneous data and I'd like to be able to change all ...
1
vote
1answer
60 views
Reclassifying raster with 33 bands in ArcMap?
I have a file geodatabase raster dataset with 33 bands. Each band is comprised of pixels with values 1-31. This represents 33 years of landuse cover data (with 31 different landuse classes). I'm ...
2
votes
2answers
373 views
Sum over Bands, Google Earth Engine
I have this real Big Bandet Image with 25000 Bands.
I want to Sum over the Bands, Pixelwise.
is there a Way to either :
-convert this ee.image, bandwise to an ee.ImageCollection
-Collapse all ...
1
vote
3answers
1k views
Displaying single band from multi-band raster using QGIS
How can I extract a single band from multi-band raster in QGIS?
I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to ...
0
votes
1answer
117 views
Extracting single band from multiple band raster with PyQGIS?
I'm approaching naw in the script and I'm trying to select many multi-band files from a folder and extract a single band from the file, putting everything in an output folder with the single-band ...
1
vote
0answers
45 views
Split many multi-band files into single-band files using PyQGIS? [closed]
I wanted to know how to take many multi-band (RGB) files in a folder and extract a single band from each one, putting everything in an output folder with the single band transformed files.
How should ...
0
votes
0answers
36 views
Create a binary output raster using an algorithm of reflectance indices
I'm attempting to create a binary output raster in ArcMap based on an algorithm that uses three different reflectance index rasters I've already created from Landsat 5 data (mNDWI, NDVI, and EVI)the ...
2
votes
1answer
80 views
When building a VRT in QGIS, which input raster will be assigned which band number?
I don't understand how QGIS assigns the band numbers to the input rasters for a virtual raster catalogue. Unfortunately the bands in the compiled virtual raster catalogue will only have the names "...
0
votes
1answer
64 views
Retaining bands when pansharpening
I am currently pan-sharpening 8-band multispectral raster satellite images with single band panochromatic images.
I use Arcmap pansharpen raster function to achieve this.
The pansharpened result ...
1
vote
1answer
91 views
Visualization of 11-bit images
I'm trying to visualize a 11-bit TIFF image using matplotlib. To do it, I load the image using tifffile to obtain a 3D numpy array. Next, I have to down-sample the image because the array contains ...
2
votes
0answers
22 views
Multi/hyper-spectral file format that stores band information and meta-data
I usually use ERDAS LAN file format drivers to create a multispectral file that contains multiple rasters of different spectral bands. However, I can't find a way to store the information regarding ...
0
votes
1answer
1k views
Reading a 4 band image with rasterio (python)
I am trying to view a tif satellite image which has 4 bands. I want to remove the last band (NIR) and view the RGB image only, so I am trying to split the NIR from the rest of the image. Here is my ...
2
votes
1answer
3k views
How to visualize multiband imagery using rasterio?
How do I plot a satellite image using rasterio? I'm able to plot the individual bands but not the entire image. Is there a way to combine the separate R, G, B numpy arrays to create a standard RGB ...
0
votes
1answer
131 views
Finding min and max symbology for each band at command line using GDAL?
I would like to automate the process of getting the correct symbology min/max scale for each of the RGB bands via command line.
My use case is I am converting multi-band GEOTIFFs to JPG using the ...
0
votes
0answers
55 views
How to remove unnecessary bands from .sid file (keeping file format)
An ImageMosaic layer created from .sid data containing 5 bands has black areas where data is missing and setting transparency parameter in GeoServer does not help as error appears:
Error rendering ...
1
vote
1answer
407 views
Get colortable from three-band RGB raster (brick) with R
I have a three band RGB Raster Geotiff. I will provide the sample data below, but I'm guessing my problem should be solvable generically. I would like to turn this three band raster into a single band ...
0
votes
1answer
28 views
Adding Metadata of image as band when band has different projection than image? [closed]
I am trying to add system:time_start as a band in my image, so that when I mosaic the image collection, I retain the time value of each pixel. I am doing this in Landsat data. However, when I add the ...
4
votes
1answer
233 views
Importing multiple rasters into QGIS?
I am new to QGIS and trying to import two thousand geo pngs to create a raster map. each png is indexed 2-4 colours.
I have tried several things:
importing one by one works, as does to drag-and-drop ...
2
votes
1answer
58 views
Finding index of raster band with minimum or maximum value using ArcGIS Desktop?
I am using ArcGIS Desktop and I have a 6-band raster.
How do I output a single-band raster whose values are the band number (1,2,3,4,5 or 6) of which band in the original raster contain the maximum (...
1
vote
0answers
152 views
Keeping band names with gdal_merge.py?
I am using gdal_merge.py to merge different mosaic rasters each contains 20 bands with different names. However, when using gdal_merge.py the bands are renamed as band1, band2, ..., band20. How can I ...
1
vote
0answers
200 views
Zonal statistics multiple band raster [closed]
I have a raster which is a yearly time series, it is created with 30 raster. It is saved then as a raster with multiple bands.
I am trying to calculate the zonal statistics of all the bands at once. ...
2
votes
2answers
585 views
Performing Radiometric Calibration of Sequoia Imagery?
I recently bought a used Sequoia camera and when I bought it, I was under the impression that the sun irradiance sensor and calibration plate would calibrate all my images in real time and I wouldn't ...
2
votes
1answer
456 views
How to edit the metadata for individual bands of a multiband raster, preferably with GDAL?
I created a multiband raster using the gdal_merge.py utility where each band represents a measurement from a different year:
gdal_merge.py -o stack.tif -ot float32 -separate -a_nodata -9999 DEM_2012....
