Search Results for author: Toshiaki Fujii

Found 7 papers, 1 papers with code

Acquiring Dynamic Light Fields through Coded Aperture Camera

no code implementations ECCV 2020 Kohei Sakai, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara

A promising solution for compressive light field acquisition is to use a coded aperture camera, with which an entire light field can be computationally reconstructed from several images captured through differently-coded aperture patterns.

Time-Efficient Light-Field Acquisition Using Coded Aperture and Events

no code implementations12 Mar 2024 Shuji Habuchi, Keita Takahashi, Chihiro Tsutake, Toshiaki Fujii, Hajime Nagahara

Different from the conventional coded-aperture imaging method, our method applies a sequence of coding patterns during a single exposure for an image frame.

Reconstructing Continuous Light Field From Single Coded Image

no code implementations16 Nov 2023 Yuya Ishikawa, Keita Takahashi, Chihiro Tsutake, Toshiaki Fujii

NeRF-based neural rendering enables high quality view synthesis of a 3-D scene from continuous viewpoints, but when only a single image is given as the input, it struggles to achieve satisfactory quality.

Neural Rendering

Compressing Sign Information in DCT-based Image Coding via Deep Sign Retrieval

1 code implementation21 Sep 2022 Kei Suzuki, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii

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 signs.

Decoder Retrieval

Acquiring a Dynamic Light Field through a Single-Shot Coded Image

no code implementations CVPR 2022 Ryoya Mizuno, Keita Takahashi, Michitaka Yoshida, Chihiro Tsutake, Toshiaki Fujii, Hajime Nagahara

To our knowledge, our method is the first to achieve a finer temporal resolution than the camera itself in compressive light-field acquisition.

Adversarial Patch Attacks on Monocular Depth Estimation Networks

no code implementations6 Oct 2020 Koichiro Yamanaka, Ryutaroh Matsumoto, Keita Takahashi, Toshiaki Fujii

Thanks to the excellent learning capability of deep convolutional neural networks (CNN), monocular depth estimation using CNNs has achieved great success in recent years.

Adversarial Attack Monocular Depth Estimation

Learning to Capture Light Fields through a Coded Aperture Camera

no code implementations ECCV 2018 Yasutaka Inagaki, Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara

To make the acquisition process efficient, coded aperture cameras were successfully adopted; using these cameras, a light field is computationally reconstructed from several images that are acquired with different aperture patterns.

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