An aerial photograph geometrically corrected and adjusted for topographic relief, lens distortion, and camera tilt - such that the scale is uniform.

learn more… | top users | synonyms

0
votes
2answers
33 views

Is there a simple way to clip multiple layers and orthophotos?

(*disclaimer, I don't know any Python/scripting) Ok, so I have clipped several layers in the past using Arcmap 10.+, but I am having a hard time wrapping my head around how hard it can be at times. ...
0
votes
0answers
18 views

Height value incrases

Please is it possible to increase the Z-values of ground control points in aerial triangulation in order for breaklines which have being floating to take the exact boundaries of the features they ...
1
vote
1answer
48 views

Extracting DEM from imagery using ArcGIS for Desktop?

I'm using ArcGIS for Desktop and I'd like to know how can I extract the elevation model from a imagery of photos. I have the have each image (jpg) geo referenced. After, I don't know what tool may use ...
0
votes
0answers
40 views

Extracting rooftops using MATLAB

I am using Matlab to extract rooftops of buildings and I want an orthoimage i.e. a .jpg file, a world file .jgw and a shape file .shp as input. A mask is needed to "hide" the pixels of the image ...
0
votes
1answer
24 views

Unable to get processing extent to match desired raster output

I have a few thousand ortho mosaic tiles that I've resampled to a lower GSD and am trying to cut into larger tiles. I developed a script that has worked perfectly for thousands and thousands of tiles ...
0
votes
0answers
22 views

GetCapabilities for NED 1/9 sec and 1 foot orthoimagery?

I'm having trouble locating the WMS servers for these, specifically for San Francisco, which makes me think this level of data is only available tiled via email links from the USGS. Is that true? ...
0
votes
0answers
19 views

Changing DEM in Arc's on-the-fly orthoprocessing

ArcGIS has the ability to do on-the-fly orthorectification once you set it up in a mosaic dataset. You point to the DEM when you set up the dataset. That's cool, but let's say you want to change the ...
1
vote
1answer
260 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, ...
0
votes
0answers
64 views

Need help with GeoExpress 9 by LizardTech/ArcGIS Server 10.1

This is a multi-part question and after much reading on different forums I still could use some help/advice. My setup: ArcGIS Desktop 10.1, Dedicated Server for GIS data with SQL Server 2008 R2 and ...
2
votes
1answer
66 views

Raster clipping over 1300 km2 orthophotos

I have all of Denmark in 25 cm orthophotos added to my ArcMap (mosaic dataset). I've added a polygon of an area covering over 1300 km2. I've used the raster clip tool to clip the data into a new ...
1
vote
1answer
32 views

Fill no data area over ocean in orthophoto mosaic

We have recently received orthoimagery tiles for my county. The county is a series of islands and the imagery only covers the islands. Thus we have data gaps where there is only water. In past ...
2
votes
2answers
711 views

Stitching Aerial Photographs

I am looking for software that is capable of stitching together large number of aerial photographs. The photos are taken with a high quality DSLR from a small helicopter, they cover about 100 meters, ...
4
votes
1answer
99 views

Do OrthoRectified Images have shadow?

Orthorectified images have removed relief displacements and tilt displacements. Since the assumption of orthorectification is to keep the light source at infinite distance so that the light rays are ...
3
votes
2answers
245 views

how to add orthophoto layer in qgis

I am not an advanced user, but I try to be oneday :) here is my issue: I have tracks (just waypoints) from my GPS in gpx format. I also have orthophoto pictures in tif format, that I would like to ...
4
votes
1answer
344 views

What is the correct way to merge adjoining raster images?

I am trying to create a raster base layer from NAIP ortho imagery. Unfortunately for me, the area of interest is very near the intersection of four image files. I have tried a few approaches to ...
3
votes
1answer
309 views

Why is Orthorectify button not active in Image Analysis Windows in ArcGIS10?

I wanted to Ortho rectify GeoEye HR imagery using existing RPC and IFSAR DTM in Image Analysis. According to ArcGIS Resource center ...
2
votes
0answers
225 views

Geospatial Tools for SketchUp

I was wondering if anyone knows of geospatial tools that work in SketchUp? I know if GeoSketch, which allows a user to import ortho imagery, DEMs, shapefiles and GPS enabled photographs into SketchUp ...
1
vote
1answer
173 views

How to apply DEM elevation adjustment parameters?

I have a nice DEM, created from UAV data, which I want to process further in QGIS, my platform of first choice. In order to represent the evelation of each pixel correctly, I have to adjust the ...
1
vote
1answer
213 views

ArcScene 10.1 Orthophoto Visualization Issue

I am attempting to visualize an orthophoto in ArcScene 10.1 at the same resolution it is at in ArcDesktop 10.1. I have set the "Quality enhancement for raster images" to it's highest extent. But, the ...
0
votes
1answer
358 views

Why is the imported TIFF file distorted with noise in Quantum-GIS?

I've a TIFF-file. Loading the raster image into QGIS does not display correctly. (Using the Add raster layer button.) It seems to be distorted with noise. See image below: The source of the TIFF ...
2
votes
3answers
995 views

Looking for an efficient way of digitizing building footprints using orthophotos and ArcGIS 10

In the past I've used PCI Geomatica to do something similar using the softwares classification functionality. Are there some tools/tricks in ArcGIS that will partially automate the process. I remember ...
2
votes
3answers
993 views

Batch script converting and resampling orthophotos

I would like to convert more than 300 orthophotos produced at scale 1:8.000 with a pixel size of 0.8m X 0.8m from Ecw format to Tiff format and after resampling pixel values. My aim is to batch ...
4
votes
3answers
2k views

Remove Collar from ECW File (Orthophoto Mosaic)

Maybe i'm missing a basic concept when it comes to manipulating/removing values from an RGB orthophoto mosaic. Is it possible to completely eliminate the collar (black background) from an orthophoto ...
2
votes
5answers
699 views

Free high-resolution Orthophotography for Quebec

Is anyone aware of free high-resolution orthophotography for Quebec? Something 1m resolution or greater would be ideal. I'm looking for imagery to use in a standard GIS as files (so not as WMS or ...