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1answer
24 views

How to do segmentation of full raster image using OrfeoToolBox

I want to do segmentation of raster image using OTB segmentation(mean-shift). But it is generating the ouput for only selected region or part of the raster image. So if i want to do the segmentation ...
0
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1answer
35 views

Is there any comprehensive book or online instruction on image segmentation techniques?

I'm looking for a source to learn theoretical basis of image segmentation techniques thoroughly. The desirable book, or other kinds of source you may know, should cover the techniques that are more ...
0
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0answers
34 views

OpenStreetMap building layer

I wonder how the building layer in OSM is generated? Are they generated using aerial imagery with automatic image segmentation/classification techniques or they are from crowd sourced tagging.
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0answers
20 views

Large-Scale Mean-Shift segmentation (orfeo toolbox) with TOA values

I have converted DN values of Landat 8 OLI to Top of Atmosphere (ToA) Reflectance using GRASS 7 and I would like to know if the Exact Large-Scale Mean-Shift segmentation (LSMS) from Orfeo Toolbox ...
1
vote
1answer
40 views

Measurement of accuracy for image segmentation of land cover image in python

I have a land cover image and I segmented it using K-means clustering algorithm. Now I want to calculate the accuracy of my segmentation. How do I do that? I have read about dice similarity ...
1
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1answer
72 views

extraction of regions from segmented image in python

I have a land cover image and I segmented it. Since the images are large in size, I am uploading only a part of them. here is the original image's part : here is the corresponding segmented image: ...
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2answers
194 views

image segmentation of RGB image by K means clustering in python

I want to segment RGB images for land cover using k means clustering in such a fashion that the different regions of the image are marked by different colors and if possible boundaries are created ...
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0answers
23 views

How to obtain the optimal parameters in LSMS Segmentation Monteverdi2?

I'm using the LSMS segmentation in Monteverdi 2.0.8, but my final segmentation (vectorization) is not satisfactory (some areas are supersegmented and others undersegmented). I 'm using a 1500x1500 ...
4
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4answers
737 views

Extracting tree crown areas from remote sensing data (visual images and LiDAR)

I am looking for a method to process a remote sensing image and extract the crown areas of the individual trees from the image. I have both visual wavelength areal imagery, and lidar data from the ...
5
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0answers
215 views

Multispectral image segmentation for natural-resources applications using R

R has the capacity for image segmentation, although all of the examples I have come across utilize a single band for the segmentation (example). I am interested in combining R's capacity for random ...
0
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0answers
57 views

RGB Imagery Layer - Feature Extraction

I'm looking for information on Feature Extraction from the Ordnance Survey Mastermap Imagery Layer. This could be technical information, research papers or just sound advice from folks on this message ...
1
vote
1answer
334 views

Segmentation - problem with mosaic tiles

Could you please tell me how to solve my problem with segmentation in ERDAS ? I am using ERDAS 2013 and the tool Image Segmentation to segment my multiband picture (with high resolution). ...
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0answers
45 views

Merging of two maps having different data in ecognition

I would like to synchronise two maps having two data (map1 for building and map2 for vegetation) into main map.I used the rule set of "working with maps".But it doesn't merges the data.I am using ...
2
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0answers
229 views

Segmentation Image used to classify RGB image in ERDAS and GIS

My ERDAS 2013 does not have the advanced Image Objective Extension for feature extraction.. I am using thus the tool Image Segmentation (Unsupervised -> Image Segmentation) to classify my RGB image ...
1
vote
2answers
430 views

Missing Dependency in SAGA. Orfeo Toolbox does not work

Hej guys, I am trying to perforem segmentation from Orfeo Toolbox (QGIS last version 2.2), whenever I try to use the toolbox, I get the following message: Oooops! The following output layers could ...
0
votes
1answer
370 views

What software programs can run a supervised classification on an image segmented into objects?

I am trying to run a supervised MLC classification on a multispectral remotely sensed image, however, I want the image to be classified using a shapefile of segmented image objects (as opposed to the ...
1
vote
1answer
376 views

How do I get the vector output segmentation algorithms to work properly in QGIS 2.0?

I'm trying to run the Watershed Segmentation algorithm, specifically, but I have been receiving the same error message using any of the available segmentation algorithms. I'm new to QGIS and have been ...
2
votes
1answer
178 views

OTB vector segmentation result is flipped

I'm using Monteverdi 2 to perform a mean shift segmentation on an image of an archaeological dig, to test the feasibility of automatic detection of elements. I've loaded the image in Monteverdi and ...
2
votes
0answers
338 views

Watershed Segmentation SAGA-GIS

I'm trying to segment a topographic map to vectorize it. I'm using the watershed algorithm of SAGA-GIS. It's working fine with polygons, but with roads or contour lines is not working properly. Here ...
1
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0answers
593 views

Image segmentation in SAGA Tutorials

I am searching for tutorials for the Image Segmentation modules of SAGA (version 2.0.8). The official wiki from the software doesn't contain any info on this modules, same thing happens in the ...
1
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0answers
474 views

How to generate TTA mask for accuracy assement in eCognition?

I'm learning to use eCognition software recently. I have done the image segmentation for Worldview-2 image. Then, I have processed for classification for class names (e.g forest,built-up area, grass ...
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2answers
385 views

How to know what spectrum image layers are in eCognition?

I'm learning to use eCognition (8.1) and my teacher has provided me with some example tif files to segment and classify. The tif files have multiple layers, each of which are supposed to represent a ...
4
votes
2answers
650 views

How do I deal with tiles in the Orfeo Toolbox segmentation?

I'm using the Orfeo Toolbox for segementation of large Very High Resolution Satellite images. It performs very well and i'm mostly very happy with it. But I still get some weird/bad results that I ...