Questions tagged [image-pyramids]

In raster datasets, a reduced resolution layer that copies the original data in decreasing levels of resolution to enhance performance.

32 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
4
votes
0answers
458 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 ...
3
votes
0answers
70 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 ...
3
votes
0answers
149 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 ...
3
votes
0answers
159 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 ...
3
votes
0answers
532 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, ...
3
votes
0answers
318 views

GeoServer + ImagePyramid: Request is empty where data exists

I have set up an image pyramid based on 5 levels of tiling. The data is served using the ImagePyramid plugin for GeoServer. When I do a layer preview the data is visualized just like I expect them to ...
2
votes
0answers
152 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
166 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
votes
0answers
69 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-...
2
votes
0answers
83 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?
2
votes
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, ...
1
vote
0answers
34 views

GeoServer Image Mosaic JDBC

I'm running GeoServer 2.15.2 on Ubuntu 18.04.3 with the latest ubuntugis-unstable release packages (GDAL 3.0.2, PostGIS 3.0.0) and cannot get the Image Mosaic *.jar to load. I followed the ...
1
vote
0answers
12 views

Is there a way to independantly hillshade the overviews of a GeoTIFF pyramid in GDAL?

Is there a way to get gdaladdo, gdaldem or another GDAL tool to create a hillshade where each overview is shaded from the corresponding overview in the DEM rather than by resampling a single full ...
1
vote
0answers
51 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 ...
1
vote
0answers
203 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
vote
0answers
146 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 ...
1
vote
0answers
109 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
0answers
257 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....
1
vote
0answers
10k 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 ...
1
vote
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?...
1
vote
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 ...
1
vote
0answers
165 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 ...
1
vote
0answers
59 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.
1
vote
0answers
370 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 ...
1
vote
0answers
343 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' ...
1
vote
0answers
479 views

Issues with building a VRT. from OS map tiles in QGIS

I am trying to speed up rendering of OS raster map tiles in QGIS. The tiles are 1:10k Tiffs - about 130 of them. When I attempt to build the VRT it says complete, then it shows up an error message:...
0
votes
0answers
30 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 ...
0
votes
0answers
23 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 "...
0
votes
0answers
63 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 ...
0
votes
0answers
532 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 ...
0
votes
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 ...