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Keigo Hirakawa

5 accepted papers

2025

EBS-EKF: Accurate and High Frequency Event-based Star Tracking

CVPR 2025highlight

Event-based sensors (EBS) are a promising new technology for star tracking due to their low latency and power efficiency, but prior work has thus far been evaluated exclusively in simulation with simplified signal models. We propose a novel algorithm for event-based star tracking, grounded in an an…

Cited by 0SourcePDFScholar
2023

A Bayesian Perspective on Noise2Noise: Theory and Extensions

ICASSP 2023accepted

The time and resource costs of obtaining pristine training data in machine learning are high. In signal recovery tasks, Noise2Noise proposed by Lehtinen et al. aims to reduce the data cost by learning the regression over two noisy measurements corresponding to the same latent variable. Close examina…

Cited by 0SourceScholar
2023

Event-Based Visual Microphone

ICASSP 2023accepted

We propose event-based visual microphone (EBVM), a passive electro-optical technique for capturing audio signals remotely using an event camera. The event-based camera records local deformations of a surface induced by the sound propagation by observing the changes in specular reflections at each pi…

Cited by 0SourceScholar
2020

Event Probability Mask (EPM) and Event Denoising Convolutional Neural Network (EDnCNN) for Neuromorphic Cameras

CVPR 2020poster

This paper presents a novel method for labeling real-world neuromorphic camera sensor data by calculating the likelihood of generating an event at each pixel within a short time window, which we refer to as "event probability mask" or EPM. Its applications include (i) objective benchmarking of event…

Cited by 95PDFScholar