Questions tagged [machine-learning]
Field of study that gives computers the ability to learn without being explicitly programmed
0
votes
0answers
23 views
Bayesian updating of land cover classification [on hold]
I am working on Land Cover Classifications and I want to apply a naive Bayes classifier for improving the accuracy. I have read a few papers but I haven't found any step by step guide to help me as I ...
0
votes
0answers
20 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 ...
4
votes
0answers
217 views
Running OTB Random Forest Classification
I am having trouble processing a satellite image using the RF (Random Forest) classification, that is a machine learning algorithm in the Orfeo Toolbox of QGis 2.18.1.
When I run the Tool, the ...
2
votes
1answer
69 views
Split GeoTIFF into multiple cells with Rasterio
I'd like to create training data for a machine learning pipeline. To do this I want to take a large raster and split it into multiple equal sized cells.
I have a very basic loop for generating the ...
0
votes
0answers
11 views
Availability of super-resolution reconstruction (SRR) techniques in GIS software
I'm doing a little research of my own regarding super-resolution reconstruction in general and in the context of GIS software.
I'm well aware of pansharpening techniques which became a standard in ...
4
votes
0answers
93 views
Reproducing Paper Results for Land Cover Mapping of Satellite Imagery?
I am interested in training a neural network to perform pixel-based classification for land cover mapping of satellite data. In order to learn more about this interesting field I am trying to ...
0
votes
1answer
90 views
How to convert masks generated by rasterio to channel last mask
The problem is about using rasterio to generate mask from GeoJSON file which contains geographic coordinates.
The function that I used is from:
from rasterio.tools.mask import mask
with rasterio....
1
vote
0answers
138 views
SVM classification in R
I have the following dataframe containing training data to be used in a SVM classification. The first column ID must be avoided and the column Class contains the response variable.
> training_S
...
1
vote
0answers
78 views
Choosing statistical method for determining different crop types? [closed]
Task: Determining different crop types from satellite imagery.
Tools at hand
Training data set which includes RGB, longitude and latitude, NDVI
and crop type for each pixel (10m by 10m)
Test data ...
0
votes
2answers
206 views
Sentinel 2 Bands + Deep Learning
I am trying to classify 9 different classes of Land use deploying Resnet Architecture. Sentinel images come with 13 bands and in RS we normally combine different bands for different classes for ...
0
votes
1answer
96 views
Is the Random Trees Classifier in ArcMap 10.5 equal to Random Forest?
Is the Random Trees Classifier in ArcMap 10.5 the same as what is named Random Forest in other applications/software?
I see that the parameters are the same and the design seems the same, but I need a ...
1
vote
0answers
77 views
Crash after performing random forest using enmap box and dzetsaka
i want to perform random forest classification using tools like dzetsaka and enmap box on qgis 3.2 version but after classification completes upto 50 percent qgis crashes what can be the issue
0
votes
1answer
52 views
Getting features from a multi-spectral image [closed]
What are the features that are present in a multi-spectral image which can be used for classification?
Also, how do we get these values from the multi-spectral image?
I am using Python environment.
1
vote
0answers
45 views
Training Sample Automation
Background, in case it helps: My objective is to (eventually) fully automate the mass digitization of grain silos. To this end, I have set out to first find a way to automatically identify silos in a ...
1
vote
1answer
53 views
How do I export training samples from IDRISI?
I have been tying to implement this paper on an SVM classifier wherein I need to extract training samples from an image and run an SVM classifier on it. The paper says the following:
IDRISI Andes ...
4
votes
2answers
2k 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 ...
1
vote
0answers
244 views
Pattern recognition - machine recognition of plausible shape of a polygon
I have a schoolproject where the task is to locate all possible shapes (of a certain complex polygonic structure) in a layer of several heterogenous polygons.
And now the task is to find all the ...
1
vote
1answer
3k views
Classify satellite Image using Machine Learning [closed]
I am new to the field of Machine Learning and I want to know what all way I can implement machine learning to classify any satellite image.
3
votes
0answers
475 views
Using Random Forest for big data?
I used Random Forest regression for my work, but now I have another problem because I have really big data. I am using a VHR and this is much raster information. My script in R is this:
rand.zero <...
7
votes
2answers
1k views
Extracting building footprints from Sentinel-2 imagery
My attempt to extract building footprints from Sentinel-2 images using machine learning algorithm trained on Sentinel-2 images produced a lot of false positives and there is no sign that the algorithm ...
13
votes
3answers
3k views
Distinction between pixel-based and object based classification?
I am struggling to clearly understand the distinction between pixel-based and object-based classification in the remote sensing domain and am hoping someone from this community can provide insight.
...
1
vote
0answers
191 views
Identify Health Centre Location using machine learning ( Optimisation ) [closed]
I am trying to identify locations of where new health centres could be built in the country using Machine Learning (optimisation) and R programming language. I currently have the latitude and ...
5
votes
4answers
4k views
Using supervised vs unsupervised classification in identification of region of interest?
I was introduced to machine learning and remote sensing recently.
My task was to classify the satellite images into vegetation and non vegetation.
We were introduced to two approaches.
Supervised ...
2
votes
1answer
359 views
OrfeoToolbox SVM classifier module doesn't produce a model for final Prediction
I'm having a struggle with SVM classification in QGIS OrfeoToolbox.
I used to work with RandomForest in R, but now I'm trying to figure out how the SVM algorithm works. I guess there would also be ...
-1
votes
1answer
1k views
How to change Numpy array shape [closed]
I have an array (Numpy of shape (100, 256, 256). How can I change this to (100, 256, 256,3)?
I tried doing reshape but it doesn't work, Can anyone help me.
3
votes
1answer
55 views
Predicting the location where new health centres should be built using R,Machine Learning
I have the geolocation of health centres in Ireland mapped in Tableau and I am looking to try to implement a machine learning aspect to this project where new health centre locations are predicted in ...
0
votes
1answer
602 views
How to convert lat long coordinates into categorical value in R?
I have latitude, longitude coordinates as follows
latitude longitude
41.775974 -71.329887
42.184913 -71.9179
41.682957373 -71.56037000
I want to use it as one of the features in a ...
4
votes
3answers
9k views
Converting lat/lon coordinates to x/y?
For machine learning I need to convert array of coordinates in lon/lat format to simple floats where x=0,y=0 will be a most south/west coordinate and x=1,y=1 most north/east, and x=0.5,y=0.5 will be ...
3
votes
1answer
529 views
QGIS OTB Machine Learning algorithms do not create output
I am attempting to calculate and save an image statistics file on a landsat 8 scene. When attempting the virtual raster and separate band files no output is created:
2016-04-01T16:26:13 0 OTB ...
1
vote
0answers
66 views
How analyze reliability of position of new point based on point data [closed]
I am working on filter for biogeographical data. It is based on citizen science principle. People put new point data to database and I want add information about "reliability" or probability (maybe ...
7
votes
1answer
430 views
1-center and k-center problem / maxmin facility problem in Post
is there anybody who has already solved the 1- and k-center problem within PostGIS (optionally with distance metric obtained by pgrouting)?
References:
1-center problem in Wikipedia and graph center ...
1
vote
0answers
377 views
Needed help to launch SVM classification in eCognition
I would like if somebody help me to launch SVM classification in eCognition.
Have you met any tutorials?
I was searching through ecognition community, but there I find only basic KNN supervised ...
2
votes
0answers
335 views
Symbolic machine learning with OpenStreetMap data [closed]
I want to apply symbolic machine learning (e.g. case-based reasoning, inductive logic programming) to OSM data. In detail, I want to use OSM Map Features to predict characteristics of residential ...
2
votes
1answer
3k views
Computing unsupervised random forest classification in R?
I want to compute an unsupervised random forest classification out of a raster stack in R. The raster stack represents the same extent in different spectral bands and as a result I want to obtain an ...
9
votes
1answer
3k views
Is machine learning used much in GIS?
I'm new to GIS. Is machine learning used much in this field, and where?
I'm investigating a job opportunity with a mapping company working on traffic awareness. My background is in supervised machine ...
31
votes
3answers
13k views
How to perform Random Forest land cover classification?
This is a follow-up to a previous post: Machine Learning Algorithms for Land Cover Classification.
It seems that the Random Forest (RF) classification method is gaining much momentum in the remote ...
35
votes
7answers
8k views
Machine Learning Algorithms for Land Cover Classification
I am interested in learning what software exists for land classification using machine learning algorithms (e.g. k-NN, Random Forest, decision trees, etc.) I am aware of the randomForest package in R ...
