asp_tutorials

Interactive tutorials for Ames Stereo Pipeline (ASP) processing.

Launch on GitHub Codespaces

☝️ this button will launch an Cloud-hosted computer on Microsoft Azure with ASP and related software pre-installed.

Usage

Once the codespace is launched, navigate to the tutorials folder from the file Explorer on the left of your codespace screen, and open the example-aster_stereo_reconstruction.ipynb notebook and run the cells to execute the interactive tutorial.

Table of Contents

• Using ASP to process ASTER Stereo Imagery
• Aligning two Digital Elevation Models or point clouds
• Aligning a Digital Elevation Model to sparse altimetry point-cloud

Sample L1A ASTER stereo images

• The tutorial uses sample L1A stereo images acquired by the ASTER instrument over Mt. Rainier, WA on July 31, 2017 (AST_L1A_00307312017190728_20200218153629_19952.zip)
• More details can be found on the data product page: https://lpdaac.usgs.gov/products/ast_l1av003/
• The sample data were downloaded from the NASA EarthData website. We are rehosting on Zenodo to enable on-demand access to the sample images when running the tutorial.

Example output

Figure: Example output DEM produced from ASTER imagery acquired over Mt. Rainier. Top Row: Orthorectified A) left and B) right stereo images. Middle Row: Disparity in C) x (E-W) and D) y (N-S) direction. Bottom Row: E) Intersection error and F) Digital Elevation Model.

Development Status

This repository is under active development; we will be adding tutorials for different ASP processing capabilities, and for different Earth and Planetary datasets. Stay tuned!! Community feedback is welcomed through github issues :D

Additional details on Github CodeSpace and usage

GitHub currently gives every user 120 vCPU hours per month for free, beyond that you must pay. So be sure to explicitly stop or shut down your codespace when you are done by going to this page (https://github.com/codespaces/).

• More details on codespace lifecycle is explained here.