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Juan Castorena

3 accepted papers

2025

LoRID: Low-Rank Iterative Diffusion for Adversarial Purification

AAAI 2025technical

This work presents an information-theoretic examination of diffusion-based purification methods, the state-of-the-art adversarial defenses that utilize diffusion models to remove malicious perturbations in adversarial examples. By theoretically characterizing the inherent purification errors associa…

Cited by 2SourcePDFScholar
2018

Ground-Edge-Based LIDAR Localization Without a Reflectivity Calibration for Autonomous Driving

RA-L 2018

In this work, we propose an alternative formulation to the problem of ground reflectivity grid-based localization involving laser-scanned data from multiple LIDARs mounted on autonomous vehicles. The driving idea of our localization formulation is an alternative edge reflectivity grid representation

Cited by 38SourceScholar
2016

Autocalibration of lidar and optical cameras via edge alignment

ICASSP 2016accepted

We present a new method for joint automatic extrinsic calibration and sensor fusion for a multimodal sensor system comprising a LIDAR and an optical camera. Our approach exploits the natural alignment of depth and intensity edges when the calibration parameters are correct. Thus, in contrast to a nu…

Cited by 0SourceScholar