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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31 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
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1answer
84 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 ...
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0answers
14 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 "...
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1answer
41 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
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1answer
161 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 ...
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0answers
101 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
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0answers
104 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 ...
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0answers
58 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
104 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
33 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
158 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 ...
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0answers
108 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
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1answer
515 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
128 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
89 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
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1answer
157 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
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1answer
694 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
238 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
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2answers
684 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
469 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, ...
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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
7k 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
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3answers
4k 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. ...
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1answer
651 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
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0answers
81 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
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0answers
40 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
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2answers
504 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
44 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
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0answers
59 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
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0answers
422 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
47 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
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1answer
2k 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
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1answer
188 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
158 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 ...
6
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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 ...
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2answers
837 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
54 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.
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0answers
501 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
361 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
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1answer
152 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
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2answers
574 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
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1answer
229 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
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1answer
482 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
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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
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1answer
3k views
Most efficient 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
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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 ...
1
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0answers
323 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' ...
2
votes
0answers
221 views
Create custom raster pyramid using arcpy in ArcGIS 10.2
I have a arcpy script that runs the Point Density tool several times for the same extent, using the same number of neighborhood cells, but with cell size increasing at an multiple of 2 with each pass. ...
1
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1answer
246 views
Custom tiles in local CRS
I want to achieve the following:
Create an OpenLayers map, that runs totally in a local CRS.
The basic layer would be a raster tile layer.
The tiles will be generated by us once for each project (...
2
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0answers
2k views
Failed to create reader using geoserver Image Pyramid plug-in
I am following instructions on this link,
http://docs.geoserver.org/stable/en/user/tutorials/imagepyramid/imagepyramid.html
I am pointing the URL to the folder normally but I get the following error,
...
