telenvi 2.4

Some remote sensing tricks from telenvi master students

telenvi

Some remote sensing tricks from telenvi master students. Contain tools to work on satellites images. You can easily load georeferenced raster files in python, compute indices on them or extract their values, then make crops, resample and reprojection.

GitHub repo

The code is available here : github.com/pyzak117/telenvi

Dependancies

to work with telenvi you need thoses libraries:

• gdal
• numpy
• geopandas
• matplotlib

Installation

pip install telenvi

Use from a python script

from telenvi import raster_tools

open a raster, mono or multi-spectral

target = raster_tools.openGeoRaster("aGeoreferencedRaster.tif")

open a part of raster

target = raster_tools.openGeoRaster(
  "aGeoreferencedRaster.tif",
  roi = "aShapefileContainingOneOrManyPolygons.shp",
  ft = 0 # the id of the polygon into the attribute table of the shapefile
  )

pixel-values extraction

array = target.pxlV

export a raster

tarrget.exportAsRasterFile("pathToANewGeoTiff.tif")

You can download a tutorial to learn how to use the telenvi package here : https://mega.nz/file/voNTUYrR#WHtp_stDGi-p3_TfUj9K_K76H56n0B1L0hGixMvVzkY You will find a .rar archive containing jupyter notebooks and data to test the package.

Contact

You can contact me at [e-mail] if you have any questions.