44 citations · 106 across the 9 of their papers we have counts for
9 papers
Sign-Coded Exposure Sensing for Noise-Robust High-Speed Imaging
R. Wes Baldwin, Vijayan Asari, Keigo Hirakawa
We present a novel Fourier camera, an in-hardware optical compression of high-speed frames employing pixel-level sign-coded exposure where pixel intensities temporally modulated as…
Time-Ordered Recent Event (TORE) Volumes for Event Cameras
R. Wes Baldwin, Ruixu Liu, Mohammed Almatrafi +2
Event cameras are an exciting, new sensor modality enabling high-speed imaging with extremely low-latency and wide dynamic range. Unfortunately, most machine learning architectures…
Lossless White Balance For Improved Lossless CFA Image and Video Compression
Yeejin Lee, Keigo Hirakawa
Color filter array is spatial multiplexing of pixel-sized filters placed over pixel detectors in camera sensors. The state-of-the-art lossless coding techniques of raw sensor data…
Distance Surface for Event-Based Optical Flow
Mohammed Almatrafi, Raymond Baldwin, Kiyoharu Aizawa +1
We propose DistSurf-OF, a novel optical flow method for neuromorphic cameras. Neuromorphic cameras (or event detection cameras) are an emerging sensor modality that makes use of dy…
Event Probability Mask (EPM) and Event Denoising Convolutional Neural Network (EDnCNN) for Neuromorphic Cameras
R. Wes Baldwin, Mohammed Almatrafi, Vijayan Asari +1
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 wi…
Inceptive Event Time-Surfaces for Object Classification Using Neuromorphic Cameras
R Wes Baldwin, Mohammed Almatrafi, Jason R Kaufman +2
This paper presents a novel fusion of low-level approaches for dimensionality reduction into an effective approach for high-level objects in neuromorphic camera data called Incepti…
Joint Defogging and Demosaicking
Y. J. Lee, K. Hirakawa, T. Q. Nguyen
Image defogging is a technique used extensively for enhancing visual quality of images in bad weather condition. Even though defogging algorithms have been well studied, defogging…
"Rewiring" Filterbanks for Local Fourier Analysis: Theory and Practice
Keigo Hirakawa, Patrick J. Wolfe
This article describes a series of new results outlining equivalences between certain "rewirings" of filterbank system block diagrams, and the corresponding actions of convolution,…
Skellam shrinkage: Wavelet-based intensity estimation for inhomogeneous Poisson data
Keigo Hirakawa, Patrick J. Wolfe
The ubiquity of integrating detectors in imaging and other applications implies that a variety of real-world data are well modeled as Poisson random variables whose means are in tu…