Demcompare is a python software that aims at comparing two DEMs together.
A DEM is a 3D computer graphics representation of elevation data to represent terrain.
Demcompare has several characteristics:
- Works whether or not the two DEMs share common format projection system, planimetric resolution, and altimetric unit.
- Performs the coregistration based on the Nuth & Kääb universal coregistration method.
- Offers two coregistration modes to choose which of both DEMs is to be adapted during coregistration.
- Provides a wide variety of standard metrics which can be classified.
- Classifies the stats by slope ranges by default, but one can provide any other data to classify the stats.
Only Linux Plaforms are supported (virtualenv or bare machine) with Python >= 3.7 installed.
Demcompare is available on Pypi and can be typically installed through a virtualenv:
python3 -m venv venv
source venv/bin/activate
pip install demcompare
Download our data sample and run the python script demcompare:
# download data samples
wget https://raw.githubusercontent.com/CNES/demcompare/master/data_samples/images/srtm_sample.zip # input stereo pair
wget https://raw.githubusercontent.com/CNES/demcompare/master/data_samples/json_conf_files/nuth_kaab_config.json # configuration file
# uncompress data
unzip srtm_sample.zip
#run demcompare
demcompare nuth_kaab_config.jsonThe results can be observed with:
firefox test_output/doc/published_report/html/demcompare_report.html &
Please consult our online documentation.
You will learn:
- Which steps you can use and combine
- How to use the command line execution
- Which parameters you can set in the input configuration
demcompare software is distributed under the Apache Software License (ASL) v2.0.
See LICENSE file or http://www.apache.org/licenses/LICENSE-2.0 for details.
Copyrights and authoring can be found in NOTICE file.
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