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We present a new hierarchical compression scheme for encoding light field images (LFI) that is suitable for interactive rendering. Our method (RLFC) exploits redundancies in the light field images by constructing a tree structure. The top…

图形学 · 计算机科学 2019-03-01 Srihari Pratapa , Dinesh Manocha

A densely-sampled light field (LF) is highly desirable in various applications, such as 3-D reconstruction, post-capture refocusing and virtual reality. However, it is costly to acquire such data. Although many computational methods have…

图像与视频处理 · 电气工程与系统科学 2020-09-29 Jing Jin , Junhui Hou , Jie Chen , Huanqiang Zeng , Sam Kwong , Jingyi Yu

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 coded-aperture imaging method, our method applies a sequence of…

计算机视觉与模式识别 · 计算机科学 2024-11-21 Shuji Habuchi , Keita Takahashi , Chihiro Tsutake , Toshiaki Fujii , Hajime Nagahara

We introduce LTCF-Net, a novel network architecture designed for enhancing low-light images. Unlike Retinex-based methods, our approach utilizes two color spaces - LAB and YUV - to efficiently separate and process color information, by…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Gaojing Zhang , Jinglun Feng

In recent years we have witnessed an increasing interest in applying Deep Neural Networks (DNNs) to improve the rate-distortion performance in image compression. However, the existing approaches either train a post-processing DNN on the…

图像与视频处理 · 电气工程与系统科学 2020-10-27 Yannick Strümpler , Ren Yang , Radu Timofte

In recent years, there has been rapid development in learned image compression techniques that prioritize ratedistortion-perceptual compression, preserving fine details even at lower bit-rates. However, current learning-based image…

计算机视觉与模式识别 · 计算机科学 2023-05-19 Peirong Ning , Wei Jiang , Ronggang Wang

This paper presents a Progressively-connected Light Field network (ProLiF), for the novel view synthesis of complex forward-facing scenes. ProLiF encodes a 4D light field, which allows rendering a large batch of rays in one training step…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Peng Wang , Yuan Liu , Guying Lin , Jiatao Gu , Lingjie Liu , Taku Komura , Wenping Wang

In this article we develop an image based rendering technique based on light field reconstruction from a limited set of perspective views acquired by cameras. Our approach utilizes sparse representation of epipolar-plane images in a…

计算机视觉与模式识别 · 计算机科学 2015-10-01 Suren Vagharshakyan , Robert Bregovic , Atanas Gotchev

In recent years, light fields have become a major research topic and their applications span across the entire spectrum of classical image processing. Among the different methods used to capture a light field are the lenslet cameras, such…

计算机视觉与模式识别 · 计算机科学 2018-08-17 Pierre Matysiak , Mairéad Grogan , Mikaël Le Pendu , Martin Alain , Aljosa Smolic

Light field microscopy is a compact solution to high-speed 3D fluorescence imaging. Usually, we need to do 3D deconvolution to the captured raw data. Although there are deep neural network methods that can accelerate the reconstruction…

信息论 · 计算机科学 2023-10-17 C. Q. Su , Y. H Gao , Y Zhou , Y. Q Sun , C. G Yan , H. B Yin , B Xiong

Light field (LF) image super-resolution (SR) is a challenging problem due to its inherent ill-posed nature, where a single low-resolution (LR) input LF image can correspond to multiple potential super-resolved outcomes. Despite this…

图像与视频处理 · 电气工程与系统科学 2023-11-29 Wentao Chao , Fuqing Duan , Xuechun Wang , Yingqian Wang , Guanghui Wang

Light field image becomes one of the most promising media types for immersive video applications. In this paper, we propose a novel end-to-end spatial-angular-decorrelated network (SADN) for high-efficiency light field image compression.…

图像与视频处理 · 电气工程与系统科学 2022-02-23 Kedeng Tong , Xin Jin , Chen Wang , Fan Jiang

Light-field microscopy (LFM) enables rapid volumetric imaging through single-frame acquisition and fast 3D reconstruction algorithms. The high speed and low phototoxicity of LFM make it highly suitable for real-time 3D fluorescence imaging,…

光学 · 物理学 2025-02-24 Bohan Qu , Zhouyu Jin , You Zhou , Bo Xiong , Xun Cao

Images taken under low-light conditions tend to suffer from poor visibility, which can decrease image quality and even reduce the performance of the downstream tasks. It is hard for a CNN-based method to learn generalized features that can…

计算机视觉与模式识别 · 计算机科学 2023-03-24 Yi Huang , Xiaoguang Tu , Gui Fu , Tingting Liu , Bokai Liu , Ming Yang , Ziliang Feng

Common representations of light fields use four-dimensional data structures, where a given pixel is closely related not only to its spatial neighbours within the same view, but also to its angular neighbours, co-located in adjacent views.…

图像与视频处理 · 电气工程与系统科学 2022-02-03 João M. Santos , Lucas A. Thomaz , Pedro A. A. Assunção , Luís A. da Silva Cruz , Luís Távora , Sérgio M. M. Faria

JPEG2000 (j2k) is a highly popular format for image and video compression.With the rapidly growing applications of cloud based image classification, most existing j2k-compatible schemes would stream compressed color images from the source…

计算机视觉与模式识别 · 计算机科学 2019-09-13 Lahiru D. Chamain , Zhi Ding

Feature detectors and descriptors are key low-level vision tools that many higher-level tasks build on. Unfortunately these fail in the presence of challenging light transport effects including partial occlusion, low contrast, and…

计算机视觉与模式识别 · 计算机科学 2019-01-15 Donald G. Dansereau , Bernd Girod , Gordon Wetzstein

This paper presents a novel and interpretable end-to-end learning framework, called the deep compensation unfolding network (DCUNet), for restoring light field (LF) images captured under low-light conditions. DCUNet is designed with a…

计算机视觉与模式识别 · 计算机科学 2024-06-27 Xianqiang Lyu , Junhui Hou

Resampling detection plays an important role in identifying image tampering, such as image splicing. Currently, the resampling detection is still difficult in recompressed images, which are yielded by applying resampling followed by…

计算机视觉与模式识别 · 计算机科学 2019-05-13 Gang Cao , Antao Zhou , Xianglin Huang , Gege Song , Lifang Yang , Yonggui Zhu

Light field (LF) imaging captures both angular and spatial light distributions, enabling advanced photographic techniques. However, micro-lens array (MLA)- based cameras face a spatial-angular resolution tradeoff due to a single shared…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Javeria Shabbir , Muhammad Zeshan. Alam , M. Umair Mukati