Stack Overflow
Stack Overflow

Questions tagged [satellite-image]

Satellite imagery (also Earth observation imagery or spaceborne photography) are images of Earth or other planets collected by imaging satellites operated by governments and businesses around the world. Satellite imaging companies sell images by licensing them to governments and businesses such as Apple Maps and Google Maps.

189 questions
36
votes
7 answers

Merging multiple rasters in R

I've been trying to find a time-efficient way to merge multiple raster images in R. These are adjacent ASTER scenes from the southern Kilimanjaro region, and my target is to put them together to obtain one large image. This is what I got so far…
fdetsch
  • 5,239
  • 3
  • 30
  • 58
12
votes
4 answers

Memory-efficient line stitching in very large images

Background I work with very large datasets from Synthetic Aperture Radar satellites. These can be thought of as high dynamic range greyscale images of the order of 10k pixels on a side. Recently, I've been developing applications of a single-scale…
Peter T.B. Brett
  • 1,250
  • 11
  • 20
11
votes
2 answers

How to use the Google satellite view as tile in leaflet with R

Many questions seem similar to mine, I could not however find a fitting answer for R. So far, I use the awesome R leaflet (and ggmap) package that way: library(ggmap) library(leaflet) coord <-geocode('New York') map.city <- leaflet() %>% …
Xavier Prudent
  • 1,570
  • 3
  • 25
  • 54
9
votes
2 answers

Suggested CNN Frameworks for Object Detection in Satellite Imagery?

I'm looking to detect boats in large satellite scenes of the ocean. I'm successfully applied matterport's Mask-RCNN setup on small subsets of satellite imagery but it is way too slow to analyze huge images like WorldView. I'm looking for something…
clifgray
  • 4,313
  • 11
  • 67
  • 116
8
votes
6 answers

Do you know any free satellite imagery for GIS?

Do you know any imagery where I can get satellite images of places for free? I have a terrain editor which uses GIS data for visualizing heightmaps but I want to texture them with satellite image. I hope some of you can provide some sources?
ufukgun
  • 6,889
  • 8
  • 33
  • 55
6
votes
1 answer

python-xarray: how to convert individual-band raster data, for multiple bands and dates, to xarray-Dataset or DataArray?

I'd like to take raster (satellite imagery) data, and build a Dataset or DataArray, to speed up my image processing (I have to work on multi-band, multi-date satellite imagery a lot). The data comes as individual bands for each image date, and I…
KenC
  • 63
  • 1
  • 4
6
votes
1 answer

How to correctly add map to raster image in R

I'm trying to plot sea surface temperature data and add a colored image of land so that data isn't confused with NAs. I've tried multiple methods to do so, but as you'll see in the images below, the maps do not line up properly relative to the…
James
  • 149
  • 1
  • 10
6
votes
2 answers

How to get latitude and longitude for a pixel of a eumetsat image using python?

I have a 3712x3712 pixel sized image of a geostationary eumetsat satellite. There is some black around the earth, such that the image looks like this: For each pixel of the earth, I'd like to get its latitute and longitude. I know that there's…
AME
  • 2,499
  • 5
  • 29
  • 45
4
votes
3 answers

Optimizing performance when reading a satellite image file in python

I have a multiband satellite image stored in the band interleaved pixel (BIP) format along with a separate header file. The header file provides the details such as the number of rows and columns in the image, and the number of bands (can be more…
Feanor
  • 670
  • 1
  • 4
  • 9
4
votes
0 answers

How do I combine GOES bands to get a single score for whether or not a pixel is cloudy?

I'm trying to determine, day or night, whether or not a GOES image pixel represents a clear view of the land, or if it's obscured by cloud. I believe the relevant channels are CMI_C13, CMI_C08, and CMI_C10, but I'm not sure what function to use to…
Andrew
  • 562
  • 5
  • 15
4
votes
0 answers

How to merge multiple MODIS swaths into one plot in python?

I want to mosaic/merge multiple swaths of the MODIS dataset (MOD06_L2) using python. I used the example (http://hdfeos.org/zoo/MORE/LAADS/MOD/MOD04_L2_merge.py) to read multiple files and merge. But I am getting an error while doing so, how to…
Krishnaap
  • 297
  • 3
  • 18
4
votes
2 answers

Loading real terrain into three.js using free map data

Has anyone got any ideas on how to load real terrain data into a three.js scene. I would like to have a 3D model on a the actual terrain , i.e the elevations and overlayed satellite imagery . Create scene : ok Load and animate models : ok Terrain…
JonoD
  • 61
  • 1
  • 7
4
votes
0 answers

How to find the creation date of the Google Map satellite image?

I am looking for a programmatic way to find the date of satellite images for any given coordinate (i.e. latitude, longitude). I have read through Google's documentation, but I have only been able to find date information for their StreetView…
vinit
  • 41
  • 3
3
votes
1 answer

Is it right to do inference different patch size than training patch size with segmentation?

I'm training a satellite model with high-resolution images(Higher than 8GB). I generate smaller patches to handle the huge images. Is it right to do inference with a different patch size than training patch size? exp: Training patch size is…
akms
  • 51
  • 1
  • 5
3
votes
1 answer

Python: How to read hyperspectral satellite data that comes with a .hdr file

I have the satellite data files (2) which are available as satdat and satdat.hdr. As per the answer provided here, I tried the following, but, it gave me an invalid header format error. import imageio from pathlib import…
anurag
  • 1,715
  • 1
  • 8
  • 28
1
2 3
…
12 13