All Questions
14
questions
1
vote
0
answers
55
views
Creating Orthomosaic with GDAL
Platform: Windows 11
1. Aim trying to achieve: I have some very high quality multispectral data (drone multispectral imagery), from which I am trying to create an orthomosaic. My multispectral data ...
- 11
1
vote
1
answer
32
views
Gdalwarp assigning zero values outside input raster extents
I'm attempting to combine several GeoTIFF files into a single mosaic raster using gdalwarp:
import os
os.environ['AWS_NO_SIGN_REQUEST'] = 'YES'
file1 = "https://dea-public-data-dev.s3-ap-...
0
votes
1
answer
129
views
Unable to merge TIFFs in one file using Warp and QGIS
I have three TIFFs are below which is belongs to Alaska HI Chart:
First https://drive.google.com/file/d/1KllacOdKNw866doqjMcounsvofpXBgFh/view?usp=sharing
Second https://drive.google.com/file/d/...
- 115
1
vote
0
answers
415
views
Using GDAL translate with VRT - merge error in overlap creates black 📦
I have a series of hi resolution multispectral images from Maxar's WV2 in .NTF form. I am trying to stitch tiles together to create a single image, and I've been having a lot of trouble. I initially ...
0
votes
0
answers
158
views
using gdal to merge Sentinel 5p projected tiff files without the overlapping at borders?
I have used gdalwarp for extracting Sentinel 5p L2__AER_AI data product to 14 tiff files in EPSG:4326 CRS.
These projected tiff files can be gotten from https://drive.google.com/drive/folders/1AHuH6n-...
- 483
4
votes
1
answer
3k
views
Fastest Possible Use of GDAL to Merge, Reproject & Convert
I have a ~10GB, Australia-wide, single band dataset consisting of 3,351 GeoTIFFs across 8 projections (Map Grid of Australia [MGA], zones 49 to 56). The data has a 2m resolution but only covers urban ...
- 767
0
votes
0
answers
446
views
Balancing/equalizing color of geotiffs before creating mosaic
I have multiple geotiffs and I want to balance/equalize the color between them, so when I create the final mosaic there will not be any "too obvious" artefacts.
GDAL helps to create the ...
- 2,135
0
votes
0
answers
187
views
Custom function for mosaic seams in Python GDAL
I was wondering if there is a way to implement a custom function for creating seams between the rasters that create a mosaic. More specifically, if I create a mosaic with gdal_merge or gdalwarp, the ...
0
votes
1
answer
2k
views
Using gdalwarp to merge bands into a mosaic created by gdal_merge?
I have created a mosaic with gdal_merge.py using the following command:
gdal_merge.py -createonly -separate -co PHOTOMETRIC=RGB -o merged.tif LE07_L1TP_046030_20180810_20180810_01_RT_b3.tif ...
- 107
4
votes
3
answers
4k
views
How to fix positive North-South Pixel size in GeoTIFF with GDAL
I have issues with some GeoTIFF raster files with positive NS resolution (North-South)
gdalinfo gave me this:
Pixel Size = (1.000000000000000,1.000000000000000)
I run into all kind of problem with ...
- 715
0
votes
1
answer
689
views
gdal_merge.py just copies first input image
I am working with Sentinel-2 data, which I want to collect for a ROI that unfortunately is covered by two different (neighboring) granules. After downloading the granules, I cut them and convert them ...
- 1,186
1
vote
0
answers
874
views
Patch processing of multiple HDF5 files using Python and Gdal (gdalwarp)
I am trying to extend this process
http://geoinformaticstutorial.blogspot.com/2014/06/reading-and-map-projecting-amsr-2-data.html
wherein a set of raster data with separate geolocation arrays are ...
- 101
2
votes
2
answers
2k
views
Mosaic Imagery using GDAL Edited
I have a couple of large sets of imagery I need to mosaic using GDAL. The sets are currently in tiff format with 18 tiles totaling about 20gb in size. I have attempted to mosaic using both the ...
- 777
17
votes
3
answers
18k
views
What's the difference between gdalwarp and gdal_merge for mosaicing
I wanted to merge around 20 dem tiffs each around 100MB, and I used gdalwarp (I know about virtual file option):
gdalwarp $(list_of_tiffs) merged.tiff
However this command took very long time, and ...
- 843