Search Results for author: Hiroshi Kawasaki

Found 20 papers, 2 papers with code

FreeCam3D: Snapshot Structured Light 3D with Freely-Moving Cameras

no code implementations ECCV 2020 Yicheng Wu, Vivek Boominathan, Xuan Zhao, Jacob T. Robinson, Hiroshi Kawasaki, Aswin Sankaranarayanan, Ashok Veeraraghavan

The projected pattern can be observed in part or full by any camera, to reconstruct both the 3D map of the scene and the camera pose in the projector coordinates.

3D Reconstruction

TIDE: Temporally Incremental Disparity Estimation via Pattern Flow in Structured Light System

1 code implementation13 Oct 2023 Rukun Qiao, Hiroshi Kawasaki, Hongbin Zha

Different from most former disparity estimation methods that operate in a frame-wise manner, our network acquires disparity maps in a temporally incremental way.

Disparity Estimation Optical Flow Estimation

Online Adaptive Disparity Estimation for Dynamic Scenes in Structured Light Systems

no code implementations13 Oct 2023 Rukun Qiao, Hiroshi Kawasaki, Hongbin Zha

In recent years, deep neural networks have shown remarkable progress in dense disparity estimation from dynamic scenes in monocular structured light systems.

Disparity Estimation

Generalization of pixel-wise phase estimation by CNN and improvement of phase-unwrapping by MRF optimization for one-shot 3D scan

no code implementations26 Sep 2023 Hiroto Harada, Michihiro Mikamo, Ryo Furukawa, Ryushuke Sagawa, Hiroshi Kawasaki

To solve the problems, we propose a pixel-wise interpolation technique for one-shot scan, which is applicable to any types of static pattern if the pattern is regular and periodic.

Data Augmentation

MOTSLAM: MOT-assisted monocular dynamic SLAM using single-view depth estimation

no code implementations5 Oct 2022 Hanwei Zhang, Hideaki Uchiyama, Shintaro Ono, Hiroshi Kawasaki

In this paper, we present MOTSLAM, a dynamic visual SLAM system with the monocular configuration that tracks both poses and bounding boxes of dynamic objects.

3D Object Tracking Autonomous Driving +3

A Method For Adding Motion-Blur on Arbitrary Objects By using Auto-Segmentation and Color Compensation Techniques

no code implementations22 Sep 2021 Michihiro Mikamo, Ryo Furukawa, Hiroshi Kawasaki

Such a blur is sometimes considered as just a noise, however, it sometimes gives an important effect to add dynamism in the scene for photographs or videos.

High-frequency shape recovery from shading by CNN and domain adaptation

no code implementations6 Aug 2021 Kodai Tokieda, Takafumi Iwaguchi, Hiroshi Kawasaki

Importance of structured-light based one-shot scanning technique is increasing because of its simple system configuration and ability of capturing moving objects.

Data Augmentation Domain Adaptation +1

Unified Underwater Structure-from-Motion

no code implementations9 Sep 2019 Kazuto Ichimaru, Yuichi Taguchi, Hiroshi Kawasaki

This paper shows that accurate underwater 3D shape reconstruction is possible using a single camera, observing a target through a refractive interface.

3D Shape Reconstruction

Underwater Stereo using Refraction-free Image Synthesized from Light Field Camera

no code implementations23 May 2019 Kazuto Ichimaru, Hiroshi Kawasaki

In this paper, we propose a novel technique to efficiently select such rays to synthesize a refraction-free image from an underwater image captured by a light field camera.

CNN based dense underwater 3D scene reconstruction by transfer learning using bubble database

no code implementations21 Nov 2018 Kazuto Ichimaru, Ryo Furukawa, Hiroshi Kawasaki

Passive stereo is a simple solution for capturing dynamic scenes at underwater environment, however the shape with textureless surfaces or irregular reflections cannot be recovered.

3D Scene Reconstruction Transfer Learning +1

Multi-scale CNN stereo and pattern removal technique for underwater active stereo system

no code implementations25 Aug 2018 Kazuto Ichimaru, Ryo Furukawa, Hiroshi Kawasaki

Passive stereo is applicable to capture dynamic scenes, however the shape with textureless surfaces or irregular reflections cannot be recovered by the technique.

Stereo Matching Stereo Matching Hand

Representing a Partially Observed Non-Rigid 3D Human Using Eigen-Texture and Eigen-Deformation

no code implementations7 Jul 2018 Ryosuke Kimura, Akihiko Sayo, Fabian Lorenzo Dayrit, Yuta Nakashima, Hiroshi Kawasaki, Ambrosio Blanco, Katsushi Ikeuchi

For full-body reconstruction with loose clothes, we propose to use lower dimensional embeddings of texture and deformation referred to as eigen-texturing and eigen-deformation, to reproduce views of even unobserved surfaces.

Depth estimation using structured light flow -- analysis of projected pattern flow on an object's surface --

no code implementations ICCV 2017 Ryo Furukawa, Ryusuke Sagawa, Hiroshi Kawasaki

Analysis reveals that minimum two light flows, which are retrieved from two projected patterns on the object, are required for depth estimation.

Depth Estimation

Depth Estimation Using Structured Light Flow -- Analysis of Projected Pattern Flow on an Object's Surface

no code implementations ICCV 2017 Ryo Furukawa, Ryusuke Sagawa, Hiroshi Kawasaki

Analysis reveals that minimum two light flows, which are retrieved from two projected patterns on the object, are required for depth estimation.

Depth Estimation

Simultaneous independent image display technique on multiple 3D objects

no code implementations10 Sep 2016 Takuto Hirukawa, Marco Visentini-Scarzanella, Hiroshi Kawasaki, Ryo Furukawa, Shinsaku Hiura

The system, despite consisting of conventional passive LCD projectors, is able to project different images and patterns depending on the spatial location of the object.

Colorization Object

Active One-Shot Scan for Wide Depth Range Using a Light Field Projector Based on Coded Aperture

no code implementations ICCV 2015 Hiroshi Kawasaki, Satoshi Ono, Yuki Horita, Yuki Shiba, Ryo Furukawa, Shinsaku Hiura

The central projection model commonly used to model cameras as well as projectors, results in similar advantages and disadvantages in both types of system.

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