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Questions tagged [distortion]

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3 votes
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357 views

Converting coordinate system produces distorted image

I have a GeoTIFF file produced from a LAZ file. I would like to convert its coordinate system to the WGS84. However, after the conversion the resulting image is skewed (has a perspective distortion). ...
a.grochmal's user avatar
2 votes
1 answer
76 views

Check geometries distorting polygons when removing gaps

Using QGIS 3.10.9 with the check geometries plugin (v0.1), and I have a simple polygon layer as a test run with a deliberate gap. I use the check geometries plugin with the topology check 'check for ...
Christina 's user avatar
1 vote
1 answer
532 views

Align set of satellite images

I have a problem my set of four satellite images (4 different years of observations) of the same area are not aligned and more than that I see that there is a distortion problem also. I found this ...
Madi's user avatar
  • 11
1 vote
0 answers
112 views

Keep the map straight with arcgis projections

I need to overlap DEM file with an historical map. The historical map doesn't have georeferencing so I need to add some control points, but when I do this the map is distorted. There is a way to ...
michele buzzoni's user avatar
1 vote
0 answers
336 views

How to calculate zonal statistics of buffer zone with minimum distortion

I want to create 50km buffers around a large set of polylines that have a global extent. My objective is to calculate average raster values within each buffer zone. The matter of confusion: I want ...
acd's user avatar
  • 107
0 votes
0 answers
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CRS selection for global product with minimal area distortion

I am building a model that takes data from different sites around the world as input where each pixel has a 10m resolution. I am now seeking a CRS system that works best for my use case. The ...
cmosig's user avatar
  • 143
0 votes
0 answers
182 views

ArcMap QGIS different distortion

I have a problem with a shapefile (EPSG:31287 MGI_Austria_Lambert). I tried to solve it on my own, but I just have no clue as to what's the error. So I use a basemap from basemap.at (WMTS: https://...
royalCoconut's user avatar
0 votes
0 answers
217 views

How can I project a raster DEM and not get serious distortion in the resulting DEM?

Please see this link to see a fine example of what I am dealing with. Distortion in projected raster My specific situation is that I have downloaded DEM data from the National Map (USA) and it comes ...
Lorin Crandall's user avatar