Search Results for author: Keigo Hirakawa

Found 8 papers, 2 papers with code

Sign-Coded Exposure Sensing for Noise-Robust High-Speed Imaging

no code implementations5 May 2023 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 positive and negative exposure are combined to yield Hadamard coefficients.

Demosaicking Vocal Bursts Intensity Prediction

Time-Ordered Recent Event (TORE) Volumes for Event Cameras

1 code implementation10 Mar 2021 R. Wes Baldwin, Ruixu Liu, Mohammed Almatrafi, Vijayan Asari, Keigo Hirakawa

Event cameras are an exciting, new sensor modality enabling high-speed imaging with extremely low-latency and wide dynamic range.

Blocking Denoising +2

Lossless White Balance For Improved Lossless CFA Image and Video Compression

no code implementations19 Sep 2020 Yeejin Lee, Keigo Hirakawa

We propose to use this white balance as a pre-processing step to lossless CFA subsampled image/video compression, improving the overall coding efficiency of the raw sensor data.

Video Compression

Inceptive Event Time-Surfaces for Object Classification Using Neuromorphic Cameras

no code implementations26 Feb 2020 R. Wes Baldwin, Mohammed Almatrafi, Jason R Kaufman, Vijayan Asari, Keigo Hirakawa

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 Inceptive Event Time-Surfaces (IETS).

Classification Dimensionality Reduction +3

Blur Processing Using Double Discrete Wavelet Transform

no code implementations CVPR 2013 Yi Zhang, Keigo Hirakawa

We propose a notion of double discrete wavelet transform (DDWT) that is designed to sparsify the blurred image and the blur kernel simultaneously.

Deblurring

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