Photographs taken from an airplane or another aircraft within the Earth's atmosphere.

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4
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3answers
821 views

Software for 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, ...
2
votes
0answers
49 views

Best practice for aerial photo stitching and georeferencing

I need to georeference 53 air photos from 1981 (1:25,000 scale) and was wondering what would be the most efficient, defensible, and accurate option. For context, the air photos are following a highway ...
0
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0answers
25 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.
2
votes
2answers
132 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 ...
0
votes
1answer
657 views

Drawing aerial routes for flights on Google Maps API between two markers?

I have been drawing route till now using DirectionService. But now my current requirement is to draw a route on air.I did some research and found this link which helps us to draw curved polylines ...
10
votes
1answer
563 views

How to compare aerial and satellite images for land use analysis?

I am interested to compare the land use-cover dynamics for four periods: 1950s, 1980s, 1990s and current for a certain area having a max size of 5000 ha. For the first three periods detailed aerial ...
3
votes
0answers
32 views

Looking for a QGIS solution to make aerial imagery ArcSDE compatiable

Would like to avoid having to use 3d Analyst and use free raster tools in QGIS or elsewhere to make aerial rasters ArcSDE compatible. This 18 page work flow is what I am trying to use. Any suggestions ...
1
vote
1answer
25 views

Clipping aerial image pairs by their overlapping area

I have a set of aerial images which I am trying to clip by their overlapping areas, for use in a more involved program I am writing. Is there a command line based tool out there with an easy method ...
1
vote
0answers
29 views

Clip Aerial Image Pair by Overlapping Area?

I have a set of aerial images which I am trying to clip by their overlapping areas, for use in a more involved program I am writing in Python with Python Imaging Library (PIL). Is there a command ...
1
vote
2answers
55 views

python crop aerial image

How can i crop an area from an aerial image knowing the latitude and longitude of the image's corners and also the cropped section? I have a LiDAR scan and i and want to crop an image overlay to fit ...
1
vote
1answer
26 views

.ecw versus.ers

I have two (seemingly identical) historic Aerial photos of my county of interest. One has a .ecw file extension and one has a .ers extension. I've been using the .ecw without trouble, but wanted to ...
0
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0answers
20 views

How to do K means clustering of anistropic diffused image?

I am trying to detect edges and i have done a anistropic diffusion of the image to get the diffused image. How do i do the K means clustering now of this diffused image in CIE labspace ? (Not orignal ...
0
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0answers
23 views

How to estimate the area of rooftops of buildings after detection?

Presently, i need to find out the area.I have made an gui in which i change thresholds and find out the rooftops as white portion. I have identified the rooftops which are the white regions in the ...
1
vote
1answer
154 views

How to cut multiple neighboring raster images

I'm looking for a way to cut a larger number of neighboring aerial raster images (each sized 1x1 km, resolution 10 cm per pxel) into four smaller raster images (size 500 x 500 m). I haven't done this ...
0
votes
1answer
16 views

How to Properly Share as Image Service?

I have 5 historical aerial sets for my county each consisting of several hundred SID files. Previous employees have created Image Catalogs for each. Now I want to turn these into services I can share ...
1
vote
0answers
28 views

How can I preserve image quality when combining aerials of different resolutions?

I have two different rasters that were flown at different times during the same month. One has a resolution of 4-inches, the other has a resolution of 6-inches. Using ArcGIS tools, how can I combine ...
0
votes
0answers
28 views

RGB Imagery Layer - Feature Extraction

I'm looking for information on Feature Extraction from the Ordnance Survey Mastermap Imagery Layer. This could be technical information, research papers or just sound advice from folks on this message ...
2
votes
1answer
33 views

Setting Point Cloud Data Colour from Raster

I was reading this article: http://blog.safe.com/2013/10/14-ways-to-take-charge-of-lidar-data/ Number 12 states that you can change the colour of your point-cloud data by using a raster image. Does ...
0
votes
1answer
28 views

Where can I find historic aerials for some areas in Dona Ana County, New Mexico?

How do I find several historic aerials from the mid-1970's or early 1980's and where can I download them and I would like them to be free of charge. Cheers,
5
votes
1answer
419 views

What lens and camera settings are recomended for UAV (drone) aerial imagery capture? [closed]

I have been toying with the idea of purchasing/bowrrowing a UAV and attempting to capture my own aerial imagery. I have pretty good DSLR Canon gear and several lenses but I am wondering what lens, ...
5
votes
2answers
318 views

10 GB Raster Aerial Image in Quantum and POSTGIS

I have a problem... I have been successful in uploading the raster in postgis but when I access it through Qgis. it does not open even after several hours. I have 10GB aerial image raster and ...
0
votes
1answer
66 views

Georeferencing an aerial image based on satellite imagery

As part of a bigger project I need to georeference an aerial image based on a landsat image downloaded form usgs. I use qgis. can I somehow place the layers on top of each other and mark certain ...
2
votes
1answer
71 views

Imagery on March 6, 2014 @ Lat 42dd55'22“ N, Long 079dd37'36” W

I am looking for any advice where to find imagery on March 6, 2014 (or a few days following) for: I have searched the USGS, ImageHunter, and Digital Globe with no luck. Does anyone have a resource ...
3
votes
3answers
401 views

What format and settings to use for aerials photos in QGIS?

Following question which was more about handling Aerials with ArcGIS: Most Effective Format to Manage Aerial Photography for Viewing Only It seems there are 2 major options for storing / resampling ...
1
vote
1answer
63 views

What format to store/use four band Raster data

I have four band aerial photography - RGBI. I need to share it with my users, a mixture of MapInfo, QGIS, and ArcGIS. What format should I store/serve the data in? GeoTIFF isn't well suited to four ...
1
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0answers
80 views

GeoServer - OSM .shp file and aerial shifted

I have a problem with two layers that I have imported into geoserver. One is retrieved via WMS from a Geoserver (aerial tiles) I don't have access to (I'm just allowed to use it via WMS) the other one ...
4
votes
3answers
329 views

Are there any open source tools for the processing of UAV images?

I have aerial photographs taken by a Unmanned Aerial Vehicle (UAV). I want to do ortho mosaicing and DEM creation to do volumetric analysis. Are there any open source tools that process the UAV ...
15
votes
2answers
1k views

What resampling technique should be used when projecting aerial photos?

I'm doing some time-intensive projecting of aerial photos, and I'm curious - what resampling technique is best to use on aerial photos? In ArcMap, my options are NEAREST, BILINEAR, CUBIC, and ...
1
vote
1answer
123 views

How to find matching pixel values in seperate rasters

I am looking to scan two separate rasters, capture the pixel information, then draw a polygon of the matching pixels. any thoughts? I am at a loss. Edit: I have two aerials, both are in ...
6
votes
1answer
2k views

ArcMap 10 - Extract raster cells from imagery based on RGB value

I've got some aerial photography (format: IMAGINE Image) which is detailed enough to see to fire hydrants and a shapefile of fire hydrants which was digitized based on some CAD data. My project is to ...
3
votes
1answer
444 views

Aerial Photograph Footprint Size Calculation

I was wondering what an easy formula to calculate the dimensions of the ground covered by an aerial photograph. I know the following: camera sensor size (mm x mm) camera focal length (mm) height ...
3
votes
2answers
112 views

Is there a software package that allows users to create map tiles?

We would like to create map tiles to be used via mobile device in the field in an offline environment. The imagery will come from our personal collection of aerial images taken via UAV.
3
votes
1answer
551 views

How to merge several google map images into one?

I want to have a high resolution aerial photo of a catchment area. I took some images from google maps and georeferenzed these and saved them as a layer file. but how can I merge them now that I have ...
1
vote
1answer
171 views

Satellite/Aerial Imagery for Nepal for mapping in OpenStreetMap

I was trying to map places in Nepal using satellite imagery but there is no high resolution imagery available at zoom level 15-16 . I was looking to map places like Illam, Dhankuta. Is there a free ...
4
votes
1answer
376 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
243 views

Google Earth/Maps aerials via arc2earth producing cuts in PDF output

I just purchased a month of arc2earth. They provide Google imagery backgrounds with great resolution and display fine in ArcMap but after exporting to PDF they have these triangular cuts as seen here: ...
11
votes
2answers
662 views

What countries allow commercial use of drones to collect aerial imagery?

Currently the US government forbids commercial use of drones to collect aerial imagery. The FAA is supposedly reviewing this to determine what sorts of restrictions are needed to allow this to happen ...
2
votes
2answers
229 views

Is there a source for leaf-off aerial imagery?

I am looking for leaf-off imagery for Oklahoma, Kansas and Texas. 1m leaf-off imagery would be ideal, although any substitute would be helpful. I need fairly high resolution imagery to distinguish ...
0
votes
0answers
66 views

Four band raster - ColorInterp of the IR band

I have a four band aerial photography raster. The bands contain Red, Green, Blue, and IR data. Using GDALInfo we get something like this currently: Band 1 Block=2933x1 Type=UInt16, ...
8
votes
3answers
314 views

Where can I get aerial images for commercial use?

Related question: Free aerial map images for commercial use - Alternatives to Google maps I'm looking for a service that will allow me to download images at up to 1 meter resolution. Currently our ...
0
votes
1answer
369 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 ...
3
votes
1answer
201 views

How to easily import aerial imagery into gvSIG?

I have used ArcView GIS 3.x for years. I have decided to try some of the free GIS desktop software. I am now trying gvSIG. One feature I was hoping for was the importation of aerial imagery relatively ...
11
votes
1answer
4k views

Free aerial map images for commercial use - Alternatives to Google maps

we are developing a web based GIS platform. We were planning to use Google maps' satellite view as BASE LAYER and serve WMS content through Geoserver as NON-BASE LAYERS. However since our application ...
2
votes
1answer
118 views

Reproject an aerial layer in QGIS and then open with ArcEngine?

I have an Aerial layer (.SID file) which I would like to re-project in QGIS, then I would like to open it in ArcEngine. I've figured out how to do this with vector layers in GGIS, its just a right ...
2
votes
3answers
510 views

Combine aerial imagery pictures to create a layer

We are looking for software or a web service that we can put in pictures we took using our weather balloon to create a single image, that we can use as a layer for our GIS project. Preferably free, or ...
5
votes
1answer
958 views

What's the best way to display a huge Aerial image using Geoserver

I have an Aerial image - Almost 1.5 GB , GEOTIFF - and i have been trying to add it as a layer in Geoserver .. Adding the layer went successful , but the performance were very bad . I tried to cache ...
3
votes
2answers
2k views

Using PHP to create a GIS Web application

I've developed many GIS Applications using ESRI ArcGIS 9.3 and 10.0 for ASP.NET . I'm wondering if i can do a GIS application using my SHAPE files and Pure PHP scripting . I've googled for that ...
1
vote
2answers
1k views

How to convert GeoTIFF to grayscale and add gaussian blur?

I have a giant GeoTIFF I'd like to convert to grayscale and add a gaussian blur to. As far as I know, GDAL can strip two of the three color bands and call it grayscale, which might work, but is there ...
1
vote
2answers
2k views

Merge single band and multi band color images

I do have 2 color images (orthophotomaps). One is only 1-band with color map and second is with 3-bands. How can I merge them with any FOSS tools or ArcGIS? Thanks a million