1 code implementation • 31 May 2023 • Antonin Sulc, Imari Sato, Bastian Goldluecke, Tali treibitz
In contrast, we claim that a simple energy function based on Snell's law enables the reconstruction of an arbitrary refractive surface geometry using just a single image and known background texture and geometry.
1 code implementation • CVPR 2023 • Jin Han, Yuta Asano, Boxin Shi, Yinqiang Zheng, Imari Sato
High-fidelity radiance recovery plays a crucial role in scene information reconstruction and understanding.
1 code implementation • CVPR 2023 • Yixin Yang, Jin Han, Jinxiu Liang, Imari Sato, Boxin Shi
Limited by the trade-off between frame rate and exposure time when capturing moving scenes with conventional cameras, frame based HDR video reconstruction suffers from scene-dependent exposure ratio balancing and ghosting artifacts.
1 code implementation • CVPR 2023 • Zhihang Zhong, Mingdeng Cao, Xiang Ji, Yinqiang Zheng, Imari Sato
This paper studies the challenging problem of recovering motion from blur, also known as joint deblurring and interpolation or blur temporal super-resolution.
no code implementations • 21 Nov 2022 • Zhihang Zhong, Mingxi Cheng, Zhirong Wu, Yuhui Yuan, Yinqiang Zheng, Ji Li, Han Hu, Stephen Lin, Yoichi Sato, Imari Sato
Image cropping has progressed tremendously under the data-driven paradigm.
1 code implementation • 20 Jul 2022 • Zhihang Zhong, Xiao Sun, Zhirong Wu, Yinqiang Zheng, Stephen Lin, Imari Sato
Existing solutions to this problem estimate a single image sequence without considering the motion ambiguity for each region.
1 code implementation • 12 Mar 2022 • Zhihang Zhong, Mingdeng Cao, Xiao Sun, Zhirong Wu, Zhongyi Zhou, Yinqiang Zheng, Stephen Lin, Imari Sato
In this paper, instead of two consecutive frames, we propose to exploit a pair of images captured by dual RS cameras with reversed RS directions for this highly challenging task.
1 code implementation • ECCV 2020 • Zhihang Zhong, Ye Gao, Yinqiang Zheng, Bo Zheng, Imari Sato
Real-world video deblurring in real time still remains a challenging task due to the complexity of spatially and temporally varying blur itself and the requirement of low computational cost.
Ranked #3 on
Deblurring
on Beam-Splitter Deblurring (BSD)
no code implementations • CVPR 2021 • Weihang Liao, Art Subpa-Asa, Yinqiang Zheng, Imari Sato
Hyperspectral photoacoustic (HSPA) spectroscopy is an emerging bi-modal imaging technology that is able to show the wavelength-dependent absorption distribution of the interior of a 3D volume.
1 code implementation • CVPR 2021 • Ziang Cheng, Hongdong Li, Yuta Asano, Yinqiang Zheng, Imari Sato
Recovering the 3D geometry of a purely texture-less object with generally unknown surface reflectance (e. g. non-Lambertian) is regarded as a challenging task in multi-view reconstruction.
no code implementations • 11 Apr 2021 • Ziang Cheng, Hongdong Li, Richard Hartley, Yinqiang Zheng, Imari Sato
This paper proposes a simple method which solves an open problem of multi-view 3D-Reconstruction for objects with unknown and generic surface materials, imaged by a freely moving camera and a freely moving point light source.
1 code implementation • CVPR 2021 • Zhihang Zhong, Yinqiang Zheng, Imari Sato
Since direct application of existing individual rolling shutter correction (RSC) or global shutter deblurring (GSD) methods on RSCD leads to undesirable results due to inherent flaws in the network architecture, we further present the first learning-based model (JCD) for RSCD.
Ranked #7 on
Rolling Shutter Correction
on BS-RSC
1 code implementation • 6 Dec 2018 • Yuhao Niu, Lin Gu, Feng Lu, Feifan Lv, Zongji Wang, Imari Sato, Zijian Zhang, Yangyan Xiao, Xunzhang Dai, Tingting Cheng
Inspired by Koch's Postulates, a well-known strategy in medical research to identify the property of pathogen, we define a pathological descriptor that can be extracted from the activated neurons of a diabetic retinopathy detector.
no code implementations • ECCV 2018 • Yuta Asano, Misaki Meguro, Chao Wang, Antony Lam, Yinqiang Zheng, Takahiro Okabe, Imari Sato
The quick detection of specific substances in objects such as produce items via non-destructive visual cues is vital to ensuring the quality and safety of consumer products.
no code implementations • ECCV 2018 • Lixiong Chen, Yinqiang Zheng, Art Subpa-Asa, Imari Sato
This paper theorizes the connection between polarization and three-view geometry.
no code implementations • CVPR 2018 • Shijie Nie, Lin Gu, Yinqiang Zheng, Antony Lam, Nobutaka Ono, Imari Sato
More interestingly, by considering physical restrictions in the design process, we are able to realize the deeply learned spectral response functions by using modern film filter production technologies, and thus construct data-inspired multispectral cameras for snapshot hyperspectral imaging.
no code implementations • ICCV 2017 • Yan Jia, Yinqiang Zheng, Lin Gu, Art Subpa-Asa, Antony Lam, Yoichi Sato, Imari Sato
Spectral analysis of natural scenes can provide much more detailed information about the scene than an ordinary RGB camera.
no code implementations • ICCV 2017 • Lixiong Chen, Yinqiang Zheng, Boxin Shi, Art Subpa-Asa, Imari Sato
Recent developments in the field have enabled shape recovery techniques for surfaces of various types, but an effective solution to directly estimating the surface normal in the presence of highly specular reflectance remains elusive.
no code implementations • 22 Sep 2017 • Qiuyu Chen, Ryoma Bise, Lin Gu, Yinqiang Zheng, Imari Sato, Jenq-Neng Hwang, Nobuaki Imanishi, Sadakazu Aiso
We propose a fully automatic system to reconstruct and visualize 3D blood vessels in Augmented Reality (AR) system from stereo X-ray images with bones and body fat.
no code implementations • CVPR 2017 • Mihoko Shimano, Hiroki Okawa, Yuta Asano, Ryoma Bise, Ko Nishino, Imari Sato
We derive an analytical spectral appearance model of wet surfaces that expresses the characteristic spectral sharpening due to multiple scattering and absorption in the surface.
no code implementations • CVPR 2016 • Ying Fu, Yinqiang Zheng, Imari Sato, Yoichi Sato
In this paper, we propose an effective method for coded hyperspectral image restoration, which exploits extensive structure sparsity in the hyperspectral image.
no code implementations • CVPR 2016 • Yoshie Kobayashi, Tetsuro Morimoto, Imari Sato, Yasuhiro Mukaigawa, Takao Tomono, Katsushi Ikeuchi
First, we narrow down candidates of zenith angle by degree of polarization and determine it by the intensity of thin film which increases monotonically along the zenith angle.
no code implementations • ICCV 2015 • Yinqiang Zheng, Ying Fu, Antony Lam, Imari Sato, Yoichi Sato
This paper introduces a novel method to separate fluorescent and reflective components in the spectral domain.
no code implementations • ICCV 2015 • Ying Fu, Antony Lam, Imari Sato, Yoichi Sato
Hyperspectral imaging is beneficial in a diverse range of applications from diagnostic medicine, to agriculture, to surveillance to name a few.
no code implementations • CVPR 2015 • Yinqiang Zheng, Imari Sato, Yoichi Sato
This paper addresses the illumination and reflectance spectra separation (IRSS) problem of a hyperspectral image captured under general spectral illumination.
no code implementations • CVPR 2015 • Feng Lu, Imari Sato, Yoichi Sato
This sort of symmetry can be observed in a 1D BRDF slice from a subset of surface normals with the same azimuth angle, and we use it to devise an efficient modeling and solution method to constrain and recover the elevation angles of surface normals accurately.
no code implementations • CVPR 2014 • Ying Fu, Antony Lam, Yasuyuki Kobashi, Imari Sato, Takahiro Okabe, Yoichi Sato
We then show that given the spectral reflectance and fluorescent chromaticity, the fluorescence absorption and emission spectra can also be estimated.
no code implementations • CVPR 2014 • Yinqiang Zheng, Shigeki Sugimoto, Imari Sato, Masatoshi Okutomi
In this paper, we revisit the pose determination problem of a partially calibrated camera with unknown focal length, hereafter referred to as the PnPf problem, by using n (n ≥ 4) 3D-to-2D point correspondences.
no code implementations • CVPR 2013 • Feng Lu, Yasuyuki Matsushita, Imari Sato, Takahiro Okabe, Yoichi Sato
We propose an uncalibrated photometric stereo method that works with general and unknown isotropic reflectances.
no code implementations • CVPR 2013 • Antony Lam, Imari Sato
Hyperspectral reflectance data allows for highly accurate spectral relighting under arbitrary illumination, which is invaluable to applications ranging from archiving cultural e-heritage to consumer product design.