CATALYST.Earth

Photogrammetry

High quality, accurate ortho-mosaics and valuable earth observation insights start with accurate pixel locations.

Overview

Our innovations in photogrammetry, image stack alignment, and mosaicking are helping our customers deliver high quality and accurate ortho-mosaics, image stacks, and DEMs on the planet. Use our off-the-shelf workflows or build your own with our Python API and powerful QA/QC tools.

Orthorectification

Designed to maximize automation, accuracy, and precision, our orthorectification workflows for satellite, and aerial imagery are packed with the top image matching, self-camera calibration, bundle adjustments, and model refinement algorithms of today.

Feature highlight: Tie Image

Our new Tie Image algorithm can reduce the GCP and Tie Point collection time by over 25%. Easily achieve perfect alignment with reference layers such as road center lines by simultaneously collecting GCPs and deep multi-ray tie points for the entire project.

Image Stack Alignment

Comparing the changes between images taken at different times is a powerful source of information. Improving the positional accuracy of your image stack reduces false positives that skew analysis and require costly manual intervention. It is also a crucial step in creating Analysis-Ready Data (ARD).

Feature highlight: Super Registration

When sub-pixel isn’t good enough, our innovative Super Registration algorithms can deliver better than 1/10th of a pixel accuracy for combining satellite with aerial and even UAV images into a single image stack. 

DEM Extraction

Our multi-view semi-global matching (SGM) technique is the most robust, accurate, and precise way to extract 3D information from satellite and aerial images. 

Feature highlight: MULTI-VIEW DSM EXTRACTION

This embedded technique calculates elevation measurements from multiple viewing angles and compares the measurements against one another using a sophisticated algorithm to determine the most accurate measurement for each pixel in your DEM.

Mosaicking

Mosaicking is the science of creating beautiful natural-looking large-scale image composites of our world from many smaller images. Our mosaicking workflow consists of sophisticated automation to balance colors, and create seamless edges, as well as intuitive QA/QC tools that reduce manual time and costs.  

Feature highlight: SMART GEOFILL

Easily fix any blemish on the preview and final mosaic with Smart GeoFill’s Photoshop-like approach that can be used to modify pixels in many ways.

Pansharpening & Image Fusion

Our pansharpening and image fusion algorithms are designed to deliver stunning high resolution images from multispectral and panchromatic pairs while maintaining the spectral integrity of your images.

Feature highlight: Multi-Resolution Analysis (MRA) FUSION

MRA fusion creates a stunning pansharpened image, that preserves the spectral integrity of the image bands making it perfect for image compositing, spectral analysis and time-series analysis.

Key Design Philosophy
REAL-TIME FEEDBACK

Our suite of photogrammetric tools are uniquely designed with a key philosophy, which is to provide real-time feedback to avoid re-work of projects. Across the workflow, we provide instant feedback to end users to confirm the quality of end products throughout the production process. Our mosaic tools also offer unique real time feedback on changes made to cutlines and colour adjustment points. We designed these tools to provide live editing feedback to allow you to produce consistent quality while reducing re-work. Our automated colour balancing methods produce superior results, with the option to make fine adjustments in difficult areas.