11 citations · 20 across the 10 of their papers we have counts for
3 papers · 1 filter
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…