Questions tagged [multi-band]
Raster data with more than one band/channel of information. Also known in imagery as multi or hyper spectral.
229
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Converting multiband raster to polygon in ArcMap
I'm currently using ArcMap 10.8
I want to convert a Multiband Raster with 3 band with each band represent the RGB value, so I can calculate the area of each value (classification) in a smaller ...
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1
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Publish the band descriptions from a TIFF in a WMS service with GeoServer
I have a multiband TIFF, where each band represents a time slice of a dataset.
The date of each band is stored in the Band Description. See the output from gdalinfo here:
Band 1 Block=476x1 Type=...
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Raster is being saved with no bands names despite defining them using Rasterio
I have an ndarray which I would like to save as rasterio raster.
I have all the information I needed (image size, transform, band names etc.).
The problem is that when I try to save the image as ...
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Reduce many bands from image over many features from feature collection in Google Earth Engine JavaScript API retaining feature collection geometry
The Situation
I need to reduce by sum every band of an image with 40 bands (30x30m floats) over a global land covering grid of 10x10km (~4 Mio. features) and export the resulting table to Google Drive....
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Replace Nan values with values from other bands in the raster datatset rasterio
I have a raster stack .tif file (approx 12 bands)
I would like to replace all Nan values in each of the bands with values from another band in the stack. Most of the Nan pixels will located in ...
2
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1
answer
570
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Dropping one band in multi-band raster using ArcGIS Pro
I have two different NAIP imagery rasters, one with five bands and the other with four. I would like to merge the two rasters so they both need to have the same number of bands.
What is the most ...
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Different raster's resolution but same pixel number, how is it possible?
Bands 1-7 & 9 of Landsat 8 have a spatial resolution of 30 meters, but Band 10 and 11 have 100 meters. Bellow there are NDVI and Band 10 Rasters of a study area.
Does each pixel of the band 10 ...
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150
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Split categorical image into multi-band image in Google Earth Engine, where every band only contains pixels from one category
Context
I need to calculate the yearly forest area lost for every country, based on the Hansen Tree Cover Loss (TCL) image. The band I use is categorical and indicates the lossyear in the form of an ...
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Show three TIFF files in a single plot as RGB
I have 3 band TIFF files (B02.tif, B03.tif and B04.tif - Float32) and I want to read them and show as a RGB image in a single plot. Then I want to add a fourth TIFF (uInt8) file on top of the RGB with ...
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Calculating relative surface of 3band raster image in QGIS
I am trying to calculate the (relative) area of this image. It is a scan of a tree, the colors indicate the moisture in the stem. If I load it in QGIS, I see 3 bands, the combination of which define ...
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Determining sea surface salinity with multisprectral satellite imagery
Could anyone with knowledge of remote sensing tell me if multispectral satellite imagery such as Landsat 8 or Sentinel 2 can be used to determine salinity differences in ocean surface water?
My ...
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73
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How to replace values of one multiband raster with the values of another multiband raster, where they overlap? [QGIS]
I've seen this question asked many times with regards to single band rasters, where you can use raster calculator. What about when you have two 3-band images?
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Calculating area of different objects in multiband raster using QGIS
I have a multi-band raster with 8 different types of land cover, and I'd like to know what area or percentage of the whole area is taking particular types. What is the best way to calculate them?
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Identifying cells overlapping in multiple rasters in QGIS
I have a range of forest raster TIFF files over a 10 year period, and want to create a fresh raster of locations where it has been forest for 3 or more years.
I know I can merge them into a multi-band ...
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227
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Use rasterio to write 4 band image with rgba photometric
I am trying to write a four band rgba tif-file using rasterio. With the following code, I'm able to write four bands.
#load data
ras = rio.open(os.path.join(path, file_in))
arr = ras.read()
# load ...
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Customising band names before exporting
I am unable to identify the bands after exporting as it shows no band name after exporting in google drive
I have tried to download Landsat 8 Surface Reflectance Tier 1 image.
I filtered the images ...
2
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2
answers
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Setting default raster band colour interpretation for QGIS
Using QGIS's Merge and Rearrange raster tools, I have created a 5-band raster based on:
A RGB raster with an alpha band,
A single-band NIR raster.
The original RGB raster's bands are all ...
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1
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405
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Colours in GeoTIFFs
Coming from a somewhat "Photoshop" background, I am having trouble understanding how colouring/visualization works in QGIS.
When I import a GeoTIFF I get min and max clip values in the 3 ...
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128
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Add Rasters to Mosaic Dataset eliminates bands using ArcGIS Pro
I am trying to create a mosaic dataset that can have any MAXAR imagery added to it (i.e. 4 band GeoEye or 8 band WorldView-2). In order to do so, I have created a Mosaic Dataset without specifying the ...
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199
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What could go wrong using gdal_calc to sum pixel values of a multiband raster?
I have a raster, input.tif. I can open it using rasterio and read 3 bands:
import rasterio
with rasterio.open('input.tif') as src:
data1 = src.read(1)
data2 = src.read(2)
data3 = src.read(...
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263
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How to add the bands value from CSV file to Image Collection for Classification
I am currently working with GEDI data and Random Forest Classification in Google Earth Engine. I have a csv file which contains 42 bands and about 3600 points. My aim is to import this csv into GEE ...
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416
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Exporting virtual raster in QGIS
I have multispectral images collected from parrot sequoia. I want to merge all 4 different bands and create a single .tif file. I created the virtual raster layer with all the bands included in that, ...
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2
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Calculate seasonal precipitation and temperature from CRU TS 4.05 in ArcGIS Pro
The Goal: To calculate the average spring (Mar-Apr-May) and summer (Jun-Jul-Aug) precipitation and temperature for a series of specific, discrete locations. These points represent sites (I'm an ...
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0
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453
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Extract a single pixel of data from multiband time series of raster (TIFF) images in Python
I have two folders of .tif files (41 and 49 rasters, respectively). The rasters are multi-band (14) and of the same location (same extent, boundaries, etc), just on different days.
I would like to ...
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88
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No features contain non-null values of in graphy
I want to graph the NDVI series by another classified image, but when I graph it there is a wrong No features contain non-null values of "system:index". Howvever I already set the system:...
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104
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Multiband rasters not displaying properly in ArcMap
I have a multiband raster and have found an issue with its display in ArcMap. It is made from two spatially co-indicent rasters which, when viewed in ArcMap, display as such:
Raster1 and Raster 2 are ...
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313
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Defining non-color channels as ExtraSamples
I run a PYQGIS script to calculate mean and stdev of an area for one specific raster-band.
processing.run('native:zonalstatisticsfb',{ 'COLUMN_PREFIX' : '_', 'INPUT' : '/Users/pugliesipc/Desktop/...
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54
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Approaches to distinguish bare soil from artificial soil in an urban context with Pleiades imagery?
My colleagues and I are trying to improve an existing landcover map by improving the distinction between bare soils and artificial soils (e.g. concrete, asphalt). We need a good detection of bare ...
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476
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Creating CNN model for multi-class image classification using Google Earth Engine
I am trying to build a satellite image classifier CNN using Google Earth Engine.
I have been following this tutorial: https://colab.research.google.com/github/google/earthengine-api/blob/master/python/...
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343
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Dividing reflectance values of Sentinel-2 sets of bands using rasterio
I need to divide the reflectance values of a Sentinel-2 sets of bands. To do this, I have to divide each band by 10000 when I read in the band to write the stack. I have an example of my code snippet ...
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2
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2
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439
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Extracting values from bands in raster where one band has two values using QGIS
I am working with QGIS and have a raster file with two bands. Band one contains two values, event types, and Band 2 contains a date where the amount of a Band one event occurring sums up.
An example ...
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483
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How do I create a virtual raster in QGIS combining single-band raster layers and a multi-band raster?
I have a raster with 21 bands. I also have 12 other raster layers with a single band each. I want to create a virtual raster combining the multi-band raster and the single-band raster layers, ...
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664
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Changing the data type for multiband raster file to integer
I have a TIFF file of first day beyond 10 degrees at 2 m height covering the northern part of North America from 2012 to 2020. Each year is stored in a different band. Currently, the data type is ...
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1
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408
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How can I create a multiband raster from singleband raster values?
Counter-intuitive to all the other questions about splitting raster bands, I would like to split my single-band raster into a multiband raster stack based on the values given in each pixel (range from ...
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120
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Multiband raster reclassify
I have a two bands raster. I need to reclassify it following the rules "if band 1 = x and band 2 = y the new value will be 1", "if band 1 = a and band 2 = b the new value will be 2"...
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Extracting spectral signatures from ROI using ENVI5.3
I used ENVI's Band Math functionality for calculating a certain index to find out the dominance of a mineral. The output is one monochrome band as seen below, I really need your help to learn how to ...
user168625
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Band ratio with Euler's number in Google Earth Engine
I've band ratio with exponential equation and Euler's number
band_ratio = (0,0039e)^(2,4952*(B2/B4))
Can anyone write it in Google Earth Engine format?
Or just input the Euler's number?
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Converting ordered image bands to image collection and add/restore time stamp in Google Earth Engine [closed]
I received this collection of ordered multiband images and would like to convert them to a single collection, adding a timestamp (system:time_end and system:time_start):
https://code.earthengine....
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1
answer
940
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Sentinel-2 Multiband thresholding (masking) using Google Earth Engine
I want to extract wheat pixels from the sentinel 2 image in google earth engine. Based on field analysis pixel should satisfy 3 conditions: NDVI value between 0.6 to 0.7, NDWI value between -0.5 to -0....
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333
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Creating composite raster mosaic
I have multiple rasters of the same area and I want to mix them into a composite raster, with each of the said rasters becoming one band of this new image, But the input images are very large and I ...
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Redefine grid cell values of 0 to 365 in multiband raster
I have a multiband raster of the Arctic showing the day of the year on which snow melts. I have grid cell values that equal 0 but they should be 365 as the snow never melts. I have tried to use the ...
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814
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How to set band names of multi-band GeoTIFF asset upon upload to Google Earth Engine
I have created a multi-bands GeoTIFF using xarray in Python following this answer. When I display this raster or open it in QGIS, all the bands are named following the variable they represent:
...
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200
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Converting point vector with many fields to multi-band raster
I have a shapefile of evenly spaced points which I'd like to convert to a raster.
In QGIS, I know I can do this with Raster > Conversion > Rasterize (Vector to Raster).
However, I see the ...
- 3,767
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214
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Python - Calculating Burned Area Index results in empty plot
I've followed this tutorial to calculate the dNBR Index, using the given sample tif files which contain a burned area. My results were as shown on the tutorial. So far so good.
Then I tried to ...
3
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1
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286
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Calculate raster pixel maximum accross multiple bands
I am using QGIS 3.10 and try to solve the following task. I have a multiband raster (4 bands in total), where each band represents the spatial extent of a tropical storm and the respective pixel value ...
2
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1
answer
899
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Extract all band values of a multiband raster to Polygons as separate columns
I am trying to extract the values of a multiband raster to a polygon in R.
ACVheatingdegreedayS <- stack("location/multibandraster.tif")
ACVheatingdegreedayS <- ACVheatingdegreedayS %&...
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132
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Subsetting mutliband raster in QGIS using OTB BandMathX
I am attempting to do a simple extraction of a multiband (360 bands) raster in QGIS. I have come to the conclusion I need to use BandMathX from OTB, since I am interested in generating a new multiband ...
1
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0
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319
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How data is stored in GeoTIFF [closed]
I'm trying to understand how data is stored in the GeoTIFF format. I understand that the file begins with header, where are stored information
which says that the file is GeoTIFF file. I also know ...
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46
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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 ...
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1
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47
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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 ...
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