Questions tagged [image-classification]
Image classification refers to the task of extracting information classes from a multiband raster image.
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NoData cells appeared in segemented raster
I am trying to classify an aerial image of a dike into grass and weeds. I used an aerial RGB image of 10 cm resolution being a TIF file. This aerial image is cleaned and contains no gaps. Only outside ...
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12 views
Input of KMeans when using multiple Band-Image in Google Earth Engine?
I am using Earth Engines ee.Clusterer.wekaKMean() for Clustering my Data.
My input is a mosaic of different S1 images containing VV and VH bands.
Is it possible to declare which bands are taken ...
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0answers
15 views
How to use knowledge engineer in Erdas Imagine for rule based classification
I want to use rule based classification in knowledge engineer section of erdas imagine software. But I don't know how to create a *.ckb file.
Can somebody point me to some reference material or ...
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1answer
38 views
Classify polygons with Random Forest on Python
I have a segmentation shapefile made with e-cognition containing many polygons of which a part classified for the train file. I would like to classify them by applying labels (e.g. water, vegetation, ...
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26 views
Supervised Classification within the bounds of a FeatureCollection
I am a bit new to classification within GEE and was hoping to get some help regarding classifying within a specific region.
var bands = ['NDVI'];
var landSat = ee.Image(ee.ImageCollection('LANDSAT/...
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0answers
12 views
Cannot Load Training Samples to Edit?
I'm trying to do a maximum likelihood classification with supervised training samples. I saved the training samples as a .gsg and I was able to load it into a maximum likelihood classification and ...
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0answers
24 views
ROI signature creation error
I'm trying to run a maximum likelihood classification on a Landsat 8 mosaic to assess land cover, but I keep getting the same error during signature generation:
I never got this error before, and ...
3
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0answers
83 views
Extract water areas from aerial photogrammetry DEM in QGIS
We are working with peatland restoration sites providing aerial photogrammetry of the restoration progress. We want to differentiate between areas water and bare peat which can look very similar in ...
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57 views
ArcGIS: Train Support Vector Machine Classifier on a Segmented Raster
I have a raster (.jpg) which I have segmented utilising Segment Mean Shift to smooth out JPEG artefact (aim is to classify it as accurately as possible for conversion into vectors).
START .JPG
Input ...
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12 views
Calculate distance between multiple arrays and landsat bands in IDL
I have a set of landsat 7 layers, that look like this:
files = [ $
"D:\ArcGIS\Programmieren in IDL\Landsat Daten\landsat_b1.tif" $
,"D:\ArcGIS\Programmieren in IDL\Landsat Daten\landsat_b2.tif" $
...
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1answer
79 views
How to obtain percentiles of classes in classified image in Google Earth Engine?
https://code.earthengine.google.com/e430e2a79aecb65e3efbce23779a0abc
I have written this code for supervised classification using the cart classifier.
Now I want to extract the no. of pixels in each ...
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1answer
70 views
Performing Supervised Classification of Houses in Africa using ArcMap?
I am doing a supervised classification in ArcMap to classify land cover types in a study area in Africa. I am using RapidEye satellite imagery (Planet Labs) and they have 5 bands: blue, green, red, ...
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0answers
59 views
Unsupervised classification in ERDAS imagine
I am trying to make a classification to run some index ( like NDVI) to see the change over time using the image difference function. Is it possible to do an unsupervised classification on one image ...
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0answers
91 views
Supervised classification with only one class with Google Earth Engine
I am a beginner with geospatial analysis and Google Earth Engine. I am trying to classify only one class of Landsat 5 image (swimming pool). I got several training sites and applied the classifier. As ...
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1answer
150 views
Is there machine learning for image classification in ArcGIS 10.3?
I have access to ArcGIS 10.3. Do I need to get ArcGIS Pro to have access to machine learning?
I've read that this is a built-in function in ArcGIS Pro.
links:
http://www.esri.com/esri-news/arcuser/...
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0answers
135 views
Using output of unsupervised cluster analysis to train supervised classification for vegetation mapping?
I'm using Google Earth Engine to classify mangrove forests from Landsat imagery to calculate extent. Let's say I perform an unsupervised K-means cluster analysis on a Landsat scene to identify general ...
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1answer
96 views
Incorporating NDVI and texture metrics in OBIA-Supervised Image Classification
Anyone knows step-by-step tutorials for incorporating NDVI and texture metrics in land cover classification with ArcMap?
I've been doing supervised classification of Sentinel-2 with the assistance ...
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1answer
47 views
Area of classified pixels in an image collection
I am using Monthly History data of the Global Surface Water dataset (Asset id: JRC/GSW1_0/MonthlyHistory).
I have filtered the images using .filterdate and .filterbounds for my region of interest (...
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0answers
55 views
Color different of two Sentinel 2A (L1C) images from the same sensing date
i'm new to this GIS Q&A websites and remote sensing as well, so sorry for this too basic question. It's about my Sentinel 2 (Level-1C) images. I downloaded 2 images with the same sensing date (09-...
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1answer
44 views
Know of any existing quality training/validation datasets for land cover?
Looking to do some moderate res. global land cover mapping and need as much training and validation data as possible--does anyone know of any good/quality land cover/land use data that are freely ...
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38 views
Use raster calculator on an Image Service in ArcMap or ArcGIS Pro
I'm mapping the approximate polygon shapes of dirt roads in a large area.
I can see the roads clearly on the world imagery basemap and on the USA NAIP image service.
Can I use Raster Calculator to ...
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0answers
132 views
QGIS Semi Automatic Classification SCP Plugin Runtime Error
I am using Landsat 8 satellite imagery for doing Supervised Classification using Semi Automatic Classification Plugin (SCP) in QGIS.
I have created ROI's and done all the procedures for doing the ...
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1answer
34 views
Is it possible to see which Landsat bands were used most, when creating kmeans clusters?
I am using kmeans clustering (ee.Clusterer.wekaKMeans) to classify a Landsat8 image using all 11 bands. I was wondering if it is possible to see what bands are relied on most to create the clusters (i....
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2answers
88 views
Supervised Classification Imagery for rooftops
I'm trying to do a supervised classification in ArcPro that will allow me to find Tar and Gravel rooftops in Miami. I have Landsat data but just wondering if there is imagery out there with better ...
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1answer
311 views
GEE: Supervised Classification exceed memory
I am trying to do a supervised classification using Landsat images, DEM, Slopes, NDVI, etc. Is there any way to do not exceed memory limit?
https://code.earthengine.google.com/...
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1answer
205 views
Orfeo TrainClassifier tool not working in QGIS
I have been using Orfeo Toolbox with QGIS (version 2.18.0) to do image classification.
I was following this tutorial on YouTube on the SVM classifier. I have followed steps 1 and 2 as described, and ...
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1answer
71 views
Supervised Classification using Remote Sensing data?
Is there a correlation between the time that supervised classification takes to execute and the training areas that we choose?
Perhaps if we take larger areas for classification will the ...
1
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1answer
277 views
About support vector machine classification
I want to classify Sentinel 2 images with the SVM in orfeo toolbox in QGIS.
I have made a ROI (2 classes) and use TrainImages classifer (libsvm). I have made a SVM model,but when I use ...
1
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1answer
459 views
eCognition TTA Mask : Aerial images in ecognition for supervised classification
I am using eCognition Developer Trial 8.0. I have rgb Drone Otho foto. We want to classify this image for various biotope types exist in that region. We have already an existing classification as a ...
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0answers
115 views
i.cluster command with GRASS GIS
I am trying to do an unsupervised classification using GRASS GIS software. I have hyperspectral photo and now analyzing vegetation indices. Here is what I did:
Created 2000+ raster photos with ...
4
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2answers
3k views
Performing deep learning land cover classification using R?
I am really new to Deep Learning and, unfortunately, I can't find example codes on land cover classification other than this one where the author wrote a script in R for a large dataset.
The main ...
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1answer
842 views
How do I manually edit raster layers on QGIS 3.0?
Main question: How do I manually edit raster layers on QGIS 3.0?
Some context: I georeferenced Google Earth high resolution downloads on to QGIS, and was looking to do image classification for a ...
4
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1answer
990 views
Exporting classification error matrix Google Earth Engine
I did a supervised classification of land cover and I need to export the Validation error matrix to .csv file. When using 'Export.table.toDrive' an error message 'Invalid argument: 'collection' must ...
2
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1answer
60 views
Can mosaic dataset be used as input to ArcGIS Pro's Image Classification Wizard?
I am currently not licensed for the Image Analyst or Spatial Analyst extensions of ArcGIS Pro. However, I am contemplating trialling/purchasing Spatial Analyst to perform image classification on a ...
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0answers
84 views
Jpeg Image Classification
I want to perform Image Classification(JPEG Image).
I loaded the image in QGIS.
Everytime i perform an action, i get a screen pop-up of Co-ordinate Reference System(CRS).
How should that be handled?
...
0
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1answer
172 views
Beginning Image Classification? [closed]
I'm a beginner with remote sensing and have the task of creating a land use/land cover map of a region in India from IRS imagery. I've never performed an image classification before, although I do ...
4
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0answers
117 views
Appropriate resolution of images for image classification? [duplicate]
I am attempting to perform image classification on some maps that I have in PNG format. This classification is failing due to there being too many many pixels in the training samples (I appear to be ...
