Spacecube: A fast inverse hyperspectral georectification system

TL;DR

Spacecube is a high-speed, artifact-free hyperspectral georectification system that leverages OpenGL for real-time processing, enabling efficient data exploration and export.

Contribution

It introduces a novel, fast inverse georectification technique integrated into a complete pipeline using graphics programming.

Findings

Operates faster than real-time

Eliminates pixel coverage artifacts

Enables high-quality interactive viewing

Abstract

Hyperspectral cameras provide numerous advantages in terms of the utility of the data captured. They capture hundreds of data points per sample (pixel) instead of only the few of RGB or multispectral camera systems. Aerial systems sense such data remotely, but the data must be georectified to produce consistent images before analysis. We find the traditional direct georectification method to be slow, and it is prone to artifacts. To address its downsides, we propose Spacecube, a program that implements a complete hyperspectral georectification pipeline, including our own fast inverse georectification technique, using OpenGL graphics programming technologies. Spacecube operates substantially faster than real-time and eliminates pixel coverage artifacts. It facilitates high quality interactive viewing, data exploration, and export of final products. We release Spacecube's source code publicly for the community to use.