Questions tagged [image-pyramids]
In raster datasets, a reduced resolution layer that copies the original data in decreasing levels of resolution to enhance performance.
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questions
4
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1answer
50 views
Should I build pyramids/overviews for the source files or for the virtual raster?
I have a virtual raster comprised of a lot of raster tiles of high-res aerial imagery. I wish to build pyramids/overviews to speed up the rendering in QGIS.
Should I build them for the source files ...
0
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0answers
20 views
On converting raster image to tiles using GDAL the initial image is blurred
On converting a raster image to tiles using GDAL the initial image is blurred. I have followed this tutorial. My image is getting converted into tiles but the raster initial image is blurred (see ...
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0answers
39 views
Implementing Pyramid plugin in GeoServer [closed]
I am trying to use the Pyramid plugin for viewing the raster tiles in the WMS service. I have done exactly same as its given in documentation URL
Except while converting my TIFF image I have not used ...
1
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0answers
53 views
What kind of resampling will give the highest quality when building pyramids?
The resampling setting of the pyramids builder of QGis povides several ways to do so : nearest, average, gauss, cubic, average_mp, average_magphase and mode. I am not a specialist in the subject. I ...
2
votes
1answer
183 views
How to force QGIS 3.6.1 create raster's pyramids (overviews) when I drag&drop them in QGIS?
There is a build-overviews-pyramids tool to create pyramids but I want to create them automatically when I add (drag & drop) raster layer into QGIS interface.
I have found parameters that is ...
0
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0answers
19 views
GeoServer ImagePyramid appears black
I've created an image pyramid with gdal_retile from jpeg compressed geotiff's.
for file in *.tif; do gdal_retile.py -v -r bilinear -levels 6 -ps 1024 1024 -co "TILED=YES" -co "COMPRESS=JPEG" -co "...
1
vote
1answer
49 views
Create pyramid from 3in TIFFs
I have a couple of terabytes of 3in GeoTIFFs that I would like to host on my GeoServer (used by a non profit during disasters when there is no Internet). I have read that the best way to host these ...
4
votes
1answer
186 views
RGB TIFF goes black when zoomed out in QGIS?
Am importing a RGB TIFF into QGIS 3.4 and when I zoom in I can see the image properly, however, when I zoom out the layer turns black (most of it) and red (a small portion). After doing some search I ...
2
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0answers
137 views
Creating tiled pyramidal TIFF from PNG tiles that are organized in slippy map?
I have map tiles (Z/X/Y) of a certain location which I serve via a simple web server and add on QGIS for offline usage via the XYZ Tile Layer from the Browse menu.
These are to be used in a survey of ...
2
votes
0answers
144 views
Why is Raster Calculator not honoring compression environment settings?
For some reason, the Raster Calculator isn't honoring any Raster Storage environments that I have set. Mainly, compression and pyramids. I am processing a large raster dataset through raster ...
2
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0answers
66 views
Indexing derivative tiles / pyramids?
I don't have any formal education in GIS so I'm thinking that I'm looking for something that exists, I just don't know what it's called.
I basically have a large raster data set that will get re-...
3
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0answers
128 views
Geowebcache pre-seed creates white and black tiles
I have published Arial photo on GeoServer using ImagePyramid technique. I have created custom gridset for it.
I have created cached tiles using geoWebcache pre-seeding. When I am accessing it in Qgis ...
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0answers
44 views
Why will my raster only display at certain extents?
I have a large raster image which contains the florida keys and has 1 meter by 1 meter resolution. When I change the extent and zoom in from 1:6,000 and closer, the image is displayed. When I change ...
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0answers
184 views
Building pyramids of virtual raster not permanent when file is moved
I have a folder saved under:
C:\QGIS\Active Layers\
In the "Active Layers" folder there our two folders; one called "Geotiffs" and the other "Virtual Raster".
In QGIS 2.18.20 I created a virtual ...
1
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0answers
124 views
White line appears between the tiles using ImageMosaic / ImagePyramid technique on GeoServer
I have created image Pyramid of 4 levels using gdal retile and published it on GeoServer using ImagePyramid technique. When I am accessing it in QGIS, it seems to work fine but at the zoom level from ...
2
votes
1answer
581 views
QGIS: building pyramids faster in properties compared to gdaladdo
Does anybody know why building pyramids in QGIS using the "build pyramids" button from the properties menu (tab: pyramids) is a lot faster than command line gdaladdo or Raster->Misc->Build Overviews?
...
3
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0answers
143 views
Image Pyramid Geoserver Nullpointer Exception
Currently I am facing a problem with our WMS Service on Geoserver. The data source is a big Image Pyramid with 5 levels covering Germany in EPSG:25832. For tiles outside the boundaries of the dataset ...
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0answers
98 views
Geoserver imagepyramid and Postgresql for granules
I'm running Geoserver 2.11.2 on Java 1.8.0_144 32 bits on Amazon Linux together with Tomcat 9. The plugins I have installed are imagemosaic, imagepyramid, GeowebCache (internal) and Geofence.
When ...
1
vote
1answer
194 views
Generalising Rasters using .ovr pyramid data?
I have to produce some lower spatial resolution rasters from a large number of very big geotiffs (c.800GB).
It occured to me that since I've produced the pyramid overviews using GDAL already I could ...
3
votes
1answer
811 views
Does building a raster pyramid have benefits even if rasters only displayed zoomed in?
Standard advice about handling large raster datasets on QGIS (and elsewhere?) usually suggests building a raster pyramid. If I understand correctly this process creates reduced resolution (i.e. ...
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0answers
246 views
Geoserver error during loading pyramid iamges
I've add geoserver plugin ImagePyramid and generate tiles by Maperitive. Next I try add this tiles into Geoserver as datasource, but when I click publish after loading I've got this error :
org....
2
votes
2answers
740 views
How can I pass geotransform to gdalwarp to handle ungeoreferenced image as georeferenced
I'm trying to read ROIs from Landsat-8 overview using GDAL /vsicurl/ , but the image is ungeoreferenced. I have geotransform from full size image, which I can copy. Is there a way to pass geotransform ...
3
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0answers
508 views
Remove near black borders on Landsat 8 overview images
I want to eliminate near black pixels around edges of Landsat-8 overview. I'm interested in doing it not for the entire image but some extent, so I clipped it. I tried using GDAL nearblack utility, ...
0
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1answer
1k views
How to find out Actual coordinate(pixel values) of chunk relative to the actual image?
I have an image of let say 500 X 500 px, I created tiles/chunks of size (10, 10). Now I want to find out actual chunk coordinate relative to the Original 500X500 px image.
Ex
I have first chunk of ...
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0answers
8k views
Zero-size array to reduction operation maximum which has no identity
Below is my identify background code, which identifies a background from an image and removes it.;
Previously it's was working fine but after I chunked my images and try to find out background I got ...
22
votes
3answers
5k views
How are GeoTIFF pyramids/overviews standardised?
While pyramids/overviews are not part of the GeoTIFF standard, many tools support creating them. For example vips/nip2, Orfeo Toolbox (otb) and ossim which all promise some support for creating those. ...
1
vote
1answer
704 views
Make Image Pyramid from JP2 Raster
I have ~1.7 GB JP2 Buckeye that I want to serve out from Geoserver; I'd like to have it tiled so that the client won't have to redraw everytime they zoom into the map. My current understanding is that ...
2
votes
0answers
82 views
Image pyramid with transparent pixels
I have a GeoTiff image which I wan't to use to build tile pyramid and serve it via geoserver. In most cases it works well but fails to publish a layer if tiled images have NO_DATA (transparent) pixels....
2
votes
0answers
41 views
Disk access characteristics of accessing vs building an image pyramid.
Hosting an extremely large (10-100x ram size) image pyramid via WMS has disk access characteristics closer to a random read, but generating the pyramid is a CPU bound sequential operation right?
3
votes
2answers
548 views
How to create multiple external overviews for a geotiff with gdal?
I want to have mutiple overview files (one for each overview level) for a GeoTiff, so I'm able to edit this files in a raster editor. How can this be done?
Unfortunately, gdaladdo -ro creates only ...
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0answers
45 views
Can I have two distinct workspaces with two different layers reference the same data store in Geoserver?
Using geoserver 2.7.2 on Ubuntu 14.04 64 bit.
I have a large image pyramid I'd like to use in two workspaces simultaneously. Do I have to create two separate "stacks" of folders, stores, and layers?...
0
votes
0answers
62 views
Accessing Geoserver plugins through the REST API
I am writing Python scripts to automate the creation of Geoserver layers. For this the gsconfig module has been invaluable, but I often need to execute operations that are handled by plugins, most ...
4
votes
0answers
438 views
gdal_retile.py leaving gaps in mosaic
I'm trying to create a seamless mosaic from the FAA's VFR aeronautical charts using gdal_retile.py. The end goal is to serve the mosaic using the ImagePyramid extension in GeoServer. However, I'm ...
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0answers
48 views
Loss of Quality in UAV Imagery after building pyramids in ArcMap?
I am using arcgis 10.1 to plot and print maps with a background with UAV imagery. When I insert an image (Tiff format), it loses quality.
The program prompts me to create pyramids, once this is ...
6
votes
1answer
3k views
Comparing use of GDAL to build raster pyramids or overviews versus ArcMap?
I have a large set of imagery that I created a mosaic from in ArcMap 10.1. I want to use GDAL to create the overviews because arcmap has issues building the pyramids and never seems to complete. I ...
1
vote
1answer
197 views
Geoserver layer pyramids in googledrive
is it possible to create pyramid from large rasters and add them with folders to google drive and mount google drive as local drive to geoserver ? i tried to search in internet to find about it and ...
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0answers
160 views
Checking if Terrain Model has pyramids or data sources using ArcPy/Python?
I asked this question in the ESRI forums and got nothing but a lesson on LAS point cloud classifications — not even remotely what I had asked.
I’m hoping someone here can point me in the right ...
8
votes
1answer
1k views
Overviews: to tiles or .vrt, or both?
When using vrt to mosaic on the fly large collections of images, is it better to add overviews (pyramids) to the individual rasters or to the final .vrt, or both? (Where "better" means finding the ...
0
votes
2answers
873 views
ClassNotFound Exception: org.postgresql.Driver Using Geotool: gt-imagemosiac-jdbc-x.x.jar
I am a newbie to GIS, coming from a strict MIS background. Anyway, I have been having a little challenge for the past couple of days trying to import tiles and pyramids into my database. Using a ...
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0answers
57 views
PMI and PMW images
i recently archieved .pmi and pmw images which converted from tiff. So now i can not open, please help me to open or convert this filetype to other aerial imagery formats.
0
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0answers
522 views
Convert shapefile to tiles for WMS requests
I have a shapefile (world countries) and this file is fix (I don’t want to edit it). I create a Vector layer with this file in GeoServer and I get this file with WMS layer from GeoServer.
In this ...
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0answers
365 views
How can I create a GeoServer store from DigitalGlobe Global Basemap tiles?
I have been given data from a DigitalGlobe product called Global Basemap. I've been tasked with getting this data into a form usable by our map server, which is running GeoServer 2.4.
The data did ...
0
votes
1answer
154 views
Pyramid Creation Utility for ArcGIS 10.1 or later
Someone wrote a really neat ENVI Pymramid Creation Utility I am wondering if there is similiar one for ArcGIS
4
votes
2answers
599 views
QGIS Deployment in Citrix XenApp - How to Remove Pyramids from the image “properties”
I'm working on deploying QGIS 2.4 into a XenApp 6.5 desktop environment.
We've tested QGIS to see if it will run in our environment on a test server and have found that building Pyramids with ...
0
votes
1answer
232 views
ArcGIS / .Net - Load pyramids in thread
I need to display a large raster with ArcGIS. To do so, I'm using pyramids, and it is working, but they can be long to build. So I would like to build the pyramids in a separate thread. When doing so, ...
1
vote
1answer
506 views
Create Reduced Resolution Dataset (.rrd) file with modern software
I need to create, very specifically, a set of reduced resolution dataset (.rrd) pyramid files for a large set of TIFF imagery. I'm using ArcGIS 10.2, and have access to Global Mapper and QGIS. ArcGIS ...
3
votes
1answer
2k views
How to remove black background from geoserver imagepyramid?
I have a large ImagePyramid published in Geoserver (v 2.4). Each granule in the pyramid has nodata set to 0. I'm confused as to which layer parameter in GeoServer should I change to get a transparent ...
5
votes
1answer
3k views
Seeking way to tile/pyramid 4 million images using gdal for geoserver WMS?
My scenario consist of 4 million geolocated images each measuring 1536x1536 pixels in size.
What is the most efficient way to pyramid these images?
My end goal is to serve these images using ...
11
votes
3answers
2k views
Color balance and publish large amount of high resolution imagery in geoserver
I have a large amount of RapidEye images (+300 Gb) that I want to use as a basemap for a online application. So far I've managed to serve them as an ImagePyramid in geoserver following the steps shown ...
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0answers
335 views
GDAL C/C++ API and filtered pyramid tile generation
I have been tasked with adding functionality to an existing C++ developed toolset whereby a source dataset (typically a single GeoTIFF) needs to be split into tiles at various resolutions ('zoom' ...
