Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [orthorectification]

The process of removing the distortions caused by image perspective (tilt) and relief (terrain)

1
vote
0answers
43 views

Orthorectification with R

How can I orthorectify an oblique image of a flat landscape when I know the conditions of the photo (coords, height, direction, lens, etc)? I would like to perform this kind of stuff from GRASS ...
0
votes
0answers
35 views

Grass Gis: What is the meaning of a TARGET LOCATION?

I am attempting to follow a guide on creating ortho-photos in Grass GIS, available here: https://grassbook.org/extra/sample-chapter/ The chapter suggests that a separate cartesian LOCATION should be ...
2
votes
1answer
82 views

Error in orthorectification of Radarsat-2 scenes with GDAL and RPC + DEM information

I am trying to use a DEM rational polynomial coefficient (RPC) information to orthorectify radarsat-2 images with GDAL 2.2.1. I have successfully done this with Orbview-3 images using the tutorial ...
0
votes
0answers
82 views

gdal: apply orthorectification to ogr dataset

I'm trying to process Digital Globe L2A image with gdal utilities (e. g. this one: https://www.digitalglobe.com/resources/product-samples/washington-dc-usa) I am using SRTM digital elevation model to ...
0
votes
1answer
135 views

How to align Aerial images from MassGIS with OSM using python?

MassGIS Dataset: I'm using the MassGIS Data: USGS Color Ortho Imagery (2013/2014) aerial images of Boston. Basically, the dataset is divided into small patches of jpeg2000 images, where each of the ...
0
votes
1answer
227 views

Orthorectification in QGIS (ORFEO OTB)

I could not find the option to include the DEM and RPC files in Orfeo (Geometry tool). Please, review the attachment.
-2
votes
1answer
233 views

Orthorectifying aerial photos? [closed]

I would orthorectify and some old aerial photos with QGIS or ArcGIS; I have already read something about the use of a DEm... what's the best way to do it?
1
vote
2answers
49 views

What is the official term for Photo Index?

I have a point shapefile that has all the aerial photos that were flown on our forest. However, they are very old and are black and white. They were scanned by our contractor. Their years are dated ...
2
votes
1answer
115 views

Using OrfeoToolBox in Python 2.7.9 crashes python

I wanted to create a python script using Orfeo Toolbox for Orthorectification of AWiFS Data. I set the environment variables necessary and the following command runs fine from the command prompt: ...
1
vote
0answers
95 views

gdalwarp with DSM as DEM leaves shifted pixels in their original unshifted location

I'm trying to account for building parallax differences between images collected at different viewing angles. When I use a DSM created from VRICON data as my DEM source, I notice that building roof ...
1
vote
1answer
37 views

What does control points look like in viewer ? How spread do they need to be ?

I have a question for you . As I am working on using ERDAS Autosync to orthorectify from an ungeoreferenced aerial photos to known reference image. I have a DEM that to go with it as well. I ...
1
vote
2answers
208 views

Finding tie points between a georeferenced and a non geo referenced image

Is there an open source program for finding tie points between a non-georeferenced image and a georeferenced image? I am looking for something I can run at the command line in linux to incorporate ...
1
vote
1answer
158 views

Determining acceptable RMSE for Orthorectification?

I have been reading about orthorectification and did some training on it but my question still remain unclear is how much RMSE should I aim to ? I will be working on a lot of aerial photos that ...
1
vote
0answers
604 views

Terrain correction / Orthorectification with gdal

Since MODIS Imagery Orthorectification (Open Source) had no answer, I will try to get one here with a similar problem: I got some raster datasets with GCPs in lat/lon, but without height information. ...
2
votes
2answers
215 views

Performing aerial triangulation on scanned aerial photos without having surveyed ground control points (GCPs)?

I have a set of 1200 historical aerial photos covering North Carolina outer banks area from 1974, 1984 and 1992. I need to georeference them and produce seamless color balanced dataset that will be ...
0
votes
0answers
46 views

Adjusting Spatial Accuracy of Ortho Imagery in ArcGIS Desktop?

I have about 35 square miles of orthorectified, high resolution, aerial imagery that is broken down into 620 individual tiff files. I have created a mosaic dataset of the imagery and I am working ...
0
votes
0answers
183 views

Gdalwarp creates a “perspective drawing” effect rather than an ortho-rectified image

I have been happily using the "utilities as libraries" functionality of gdal 2.1+ to ortho-rectify an image. First I use gdal.Translate to convert the source file to a geotiff, and then I warp it to (...
2
votes
2answers
251 views

metadata in Orfeo Toolbox Orthorectification

I'm using Orfeo Toolbox to orthorectify a WorldView-3 Basic Imagery Product. The process seems very straight forward. I just input the image and a DEM of the area, and Orfeo gives me an orthorectified ...
1
vote
0answers
314 views

Formula to convert WGS84 to BT68 and to Borneo Rectified Screw Orthomorphic [closed]

I am doing research about converting the coordinate system from Wgs84 to Rectify Skew Orthomorphic Borneo (BRSO) map projection system which is very useful for Sabah and Sarawak but I have two ...
2
votes
1answer
199 views

Georeferencing batch geotagged photos

I am struggling with georeferencing over 300 aerial photographs. All of those photographs are geotagged and generally are rather easy to georeference but I am wandering if that can be done ...
1
vote
1answer
93 views

Rectify Vector Features to Oblique/Isometric Raster

I have a task which I would like to accomplish by overlaying a vector on to a raster, but the raster is oblique/non aerial. I have all the information that would be necessary to photogrametrically ...
1
vote
1answer
220 views

Where can I find GRASS i.ortho.rectify?

I currently have several versions of GRASS GIS installed on PC with Windows 7 (6.4.3, 6.4.4, 7.0.4, and 7.1). I cannot find the i.ortho.rectify module. It appears to be missing. I have searched and ...
1
vote
0answers
126 views

How to tilt/change angle of view/camera from ortho in MapServer or OpenLayers?

I am wondering if there is a way of changing the angle of the camera in MapServer from Ortho to a 60 degree (+-10) angle. Perhaps this is an extensive modulation of Google Maps? I could imagine ...
4
votes
1answer
677 views

Does GDALWARP have support for OpenCL speedup to orthorectification?

So I am attempting to orthorectify some images very large images. The process can take several hours so currently I am relying on using 8 threads to perform the speed up. However, the GPU does not ...
0
votes
1answer
165 views

How to project a large nonortho satelite image on a much smaller high res DEM?

I am currently attempting to orthorectify an image using GDAL. I have a very detailed DEM that I would like to rectify the image on top of. However, the DEM is smaller than the image itself; this is ...
3
votes
0answers
264 views

Adding raster layer with RPC file in ArcGIS for Desktop for ortho rectification with DEM file? [closed]

I have a Pleiades image with its RPC file with .xml extension and a DEM file of the same area, but when I import them the orthorectification button is not active in display tab of property window. ...
1
vote
0answers
27 views

Are the images produced from the “Export mosaic dataset items” orthorectified?

I am trying to find whether or not the orthorectification is done to these images like it is for the export data, I can't find anything about this.
3
votes
0answers
250 views

MODIS Imagery Orthorectification (Open Source)

I am looking for an open source free software/tool for orthorectification/Geometric terrain correction of MODIS imagery. I have looked at ESA (European Space Agency) SNAP but this sensor type is not ...
1
vote
0answers
294 views

Storing non-orthorectified images in GeoTIFF

I'm reading GeoTIFF and GDAL documentations and I'm trying to understand what type of transformations are supported. GeoTIFF documentation says you can use ModelTransformationTag to define a ...
1
vote
0answers
25 views

Orthorectify large set aerial images [duplicate]

I have a large set of images that I want to stitch the together and orthorectify. They have been taken from a small aircraft. The camera of the aircraft is tilted, thereby, although gps data is ...
2
votes
2answers
2k views

How Rational Polynomial Coefficients(RPCs) are calculated? Need references

I wonder how RPCs are created for satellite images. I read that RPCs are used to correct for systematic error in the image which arise due to Surface relief, camera orientation wrt nadir, camera tilt ...
1
vote
0answers
113 views

Aerial mosaic of thermography

I have a large set of aerial images (thermography) some of them are very tilted due to the airplane turning. I want to merge all the images into a unique orthorectified image. I have not the GPS ...
3
votes
1answer
220 views

Comparing real orthophotos against common available tiles on the internet (Google, Bing, ..)

All available background tiles I know about on the internet (OpenLayers, Bing, Google) are tilted. See a random example below from OpenLayers (you can see the east side of the buildings): In essence, ...
2
votes
1answer
1k views

Image orthorectification with XYZ and roll, pitch and yaw

There are a lot of raw images taken by UAV and the only parameters that I have are XYZ and roll, pitch, yaw in excel spreadsheet. I've been trying to orthorectify these images with ArcGIS, Er mapper ...
5
votes
1answer
653 views

Can't generate true orthophoto from my software

I am a GIS specialist and a surveyor. Lately I'm trying to use as a surveying tool my DJI Phantom 3 pro combining with different software for generating DEM, DSM, 3d model and orthophoto. But I can't ...
2
votes
1answer
223 views

Checking the registration accuracy of already-orthorectified images

I acquired several Landsat 5-8 images corrected at Level 1T. I also have aerial ortophotos of the same area. From a visual assessment the co-registration between the images seems good, but I need to ...
4
votes
1answer
332 views

Which preprocessing comes first for pansharpened imagery- atmospheric correction or orthorectification?

For pansharpened imagery, what preprocessing method to do first- is it atmospheric correction or orthorectification? From my readings, it seems the former but the rational polynomial coefficients or ...
1
vote
0answers
494 views

Orthorectification errors in ArcMap when including RPC data

I am trying to orthorectify satellite imagery with a DEM in ArcMap. I have already georeferenced the raster. The imagery came with an RPC TXT file, but when I change the name of the RPC file to match ...
3
votes
2answers
2k views

automatically geo- and ortho- rectify raw Landsat data using DEM

I have a dataset of 20 Landsat scenes (MSS, TM, ETM+) for 20 years (one scene per year). Scenes are in WGS 84, EPSG 32634 coordinate system and I can easily project = geometrically correct them to ...
1
vote
1answer
741 views

Automatically georectify raw Landsat scenes

I am working with 20 raw Landsat images downloaded from GloVis, in WGS 84 (EPSG 32634) coordinate system. I need to geometrically correct them to S_JTSK (EPSG 5514). Usually, georectification is done ...
2
votes
1answer
127 views

3D rubber sheeting using ground control points

I have 3d lines that I would like to rubber sheet or rectify in 3D (including z rectification). I used ogr2ogr with -gcp, however all the vertex of a polyline were set to a single elevation, and since ...
1
vote
0answers
232 views

Mapping from one plane on the other plane despite of masking regions

have a set of data given here, where in the first and second columns there are the sky coordinates (ra,dec) e.g. right ascension and declination, respectively and in the third and forth, the ...
2
votes
0answers
205 views

Ortho-rectification of Aerial Image

I took an aerial image of our farm using RC quadcopter. How am I going to orthorectify this image? Please can you help me with detailed instructions/methods involving the process.
4
votes
2answers
2k views

georeference and orthorectification of aerial photos

I am trying to process photos taken with a tetracam ADC micro camera placed on a UAV. I have GPS coordinates and mavlink logs providing roll, pitch and yaw of the UAV. I am having a real hard time ...
1
vote
1answer
545 views

Is Landsat 4-5-7 L1G geometric corrected?

I'm using Landsat L1G for our project and need L1G to be geometric corrected for later use. One thing I know for sure that L1G need to be employed a Digital Elevation Model (DEM) for topographic ...
1
vote
1answer
2k views

What is the best way to ortho-rectificate image from the plane?

I am very new in GIS and I am trying to ortho-rectificate my images. But after putting it on the map I see that results are not precise. We have images taken from the airplane, it's longitude, ...
2
votes
3answers
867 views

Batch rectifying 200+ historic aerial images?

I have acquired historic aerial imagery for the surrounding towns, circa 1954, and the images have no georeference. I am looking for software to help me batch-rectify the 200+ images. I have current ...
1
vote
0answers
88 views

georectification via SLD is not appearing at the correct place

I am trying to georectify layers on the fly (feeded by Geoserver) in OpenLayers. To do so, we have created a style (SLD) in Geoserver that does the georectification provided that we feed it a ...
1
vote
1answer
491 views

Error Message Orthorectifying ASTER Imagery in ArcMap 10 with DEM

I am trying to orthorectify ASTER imagery (VNIR, 15m resolution) in ArcMap using an ASTER DEM that I have downloaded from the GDEM website. The area is in the Andes, there are very high elevation ...