11 citations · 20 across the 10 of their papers we have counts for
10 papers
Coded-E2LF: Coded Aperture Light Field Imaging from Events
Tomoya Tsuchida, Keita Takahashi, Chihiro Tsutake +2
We propose Coded-E2LF (coded event to light field), a computational imaging method for acquiring a 4-D light field using a coded aperture and a stationary event-only camera. In a p…
Transport of Event Equation: Phase Retrieval from Defocus Events
Kaito Hori, Chihiro Tsutake, Keita Takahashi +1
To time-efficiently and stably acquire the intensity information for phase retrieval under a coherent illumination, we leverage an event-based vision sensor (EVS) that can detect c…
Events Meet Phase-Shifting Digital Holography: Practical Acquisition, Theory, and Algorithms
Ittetsu Uchiyama, Chihiro Tsutake, Keita Takahashi +1
We introduce a novel phase-shifting digital holography (PSDH) method leveraging a hybrid event-based vision sensor (EVS). The key idea of our method is the phase shift during a sin…
Fast Sign Retrieval via Sub-band Convolution: An Elementary Extension of Binary Classification
Fuma Ito, Chihiro Tsutake, Keita Takahashi +1
To efficiently compress the sign information of images, we address a sign retrieval problem for the block-wise discrete cosine transformation (DCT): reconstruction of the signs of…
An Efficient Compression Method for Sign Information of DCT Coefficients via Sign Retrieval
Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii
Compression of the sign information of discrete cosine transform coefficients is an intractable problem in image compression schemes due to the equiprobable occurrence of the sign…
Holographic Phase Retrieval via Wirtinger Flow: Cartesian Form with Auxiliary Amplitude
Ittetsu Uchiyama, Chihiro Tsutake, Keita Takahashi +1
We propose a new gradient method for holography, where a phase-only hologram is parameterized by not only the phase but also amplitude. The key idea of our approach is the formulat…
Time-Efficient Light-Field Acquisition Using Coded Aperture and Events
Shuji Habuchi, Keita Takahashi, Chihiro Tsutake +2
We propose a computational imaging method for time-efficient light-field acquisition that combines a coded aperture with an event-based camera. Different from the conventional code…
Reconstructing Continuous Light Field From Single Coded Image
Yuya Ishikawa, Keita Takahashi, Chihiro Tsutake +1
We propose a method for reconstructing a continuous light field of a target scene from a single observed image. Our method takes the best of two worlds: joint aperture-exposure cod…
Compressing Sign Information in DCT-based Image Coding via Deep Sign Retrieval
Kei Suzuki, Chihiro Tsutake, Keita Takahashi +1
Compressing the sign information of discrete cosine transform (DCT) coefficients is an intractable problem in image coding schemes due to the equiprobable characteristics of the si…
Acquiring a Dynamic Light Field through a Single-Shot Coded Image
Ryoya Mizuno, Keita Takahashi, Michitaka Yoshida +3
We propose a method for compressively acquiring a dynamic light field (a 5-D volume) through a single-shot coded image (a 2-D measurement). We designed an imaging model that synchr…