Publications underlying ApertureLab

The research record behind ApertureLab comprises 29 peer-reviewed publications across 14 years. It covers the complete chain, from acoustic wave scattering through image formation to the models that read the resulting imagery. ApertureLab is the current state of that line of work.

A dark poster showing 64 stacked sonar ping traces rising into a seabed feature, titled the seafloor, knowable
Sixty-four consecutive ping returns from one seabed feature, which coherent combination resolves into an image of the feature.

Image formation and physics papers

The three papers below underlie ApertureLab's physics engine and beamformer: GPU-accelerated time-domain back-projection (TDBP), interpolation kernels for sub-wavelength micronavigation, and a validated simulation of sub-bottom acoustics.

AI & Machine Learning

The three papers below trace the use of synthetic data in SAS machine learning. They run from synthesizing scarce training data with a physics-coupled GAN, to few-shot classifiers trained with synthetic augmentation, to zero-shot vision-language models (VLMs) that classify sonar imagery from a text prompt alone.

Reed, Gerg et al. 2019
MTS/IEEE OCEANS 2019

Coupling Rendering and Generative Adversarial Networks for Artificial SAS Image Generation

Albert Reed, Isaac D. Gerg, John D. McKay, Daniel C. Brown, David P. Williams, Suren Jayasuriya

A physics renderer coupled with a GAN produces realistic SAS target imagery when labeled field data is too scarce to train from alone.

Read paper →
Gerg, Lynch & Blanford 2025
MTS/IEEE OCEANS 2025

Low-Shot Learning for Synthetic Aperture Sonar Image Classification Using Hierarchical Pretraining & AirSAS

Isaac D. Gerg, Alex Lynch, Thomas E. Blanford

Hierarchical pretraining on AirSAS synthetic data reduces labeled-data requirements to a handful of real examples per class.

Gerg 2026
IEEE IGARSS 2026

Prompted, Not Trained: On Zero-Shot Classification of Synthetic Aperture Imagery with Vision-Language Models

Isaac D. Gerg

VLMs classify SAS targets at 0.946 AUC using only text prompts that describe highlight-shadow geometry, with no domain-specific training.

To appear.

Publications by Processing Stage

The cards above are a selection from 29 publications across 14 years. The complete record spans physics-based simulation and synthetic data, micronavigation, GPU image formation, learned autofocus, compression, perceptual image quality, and the models that read the imagery. The diagram below places each paper on the stage of the processing chain it advances.

29 publications, 2012 to 2026, mapped onto the SAS processing chain; each line ties a paper to the stage it advances.

Next: the physics engines, or why a synthetic aperture exists at all.