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A 3D point cloud is often synthesized from depth measurements collected by sensors at different viewpoints. The acquired measurements are typically both coarse in precision and corrupted by noise. To improve quality, previous works denoise…

图像与视频处理 · 电气工程与系统科学 2020-02-12 Xue Zhang , Gene Cheung , Jiahao Pang , Dong Tian

Centrality measures for simple graphs/networks are well-defined and each has numerous main-memory algorithms. However, for modeling complex data sets with multiple types of entities and relationships, simple graphs are not ideal. Multilayer…

信息论 · 计算机科学 2023-08-15 Hamza Reza Pavel , Abhishek Santra , Sharma Chakravarthy

This paper proposes a particle volume reconstruction directly from an in-line hologram using a deep neural network. Digital holographic volume reconstruction conventionally uses multiple diffraction calculations to obtain sectional…

图像与视频处理 · 电气工程与系统科学 2019-03-27 Tomoyoshi Shimobaba , Takayuki Takahashi , Yota Yamamoto , Yutaka Endo , Atsushi Shiraki , Takashi Nishitsuji , Naoto Hoshikawa , Takashi Kakue , Tomoyosh Ito

In this paper, we address monocular depth estimation with deep neural networks. To enable training of deep monocular estimation models with various sources of datasets, state-of-the-art methods adopt image-level normalization strategies to…

计算机视觉与模式识别 · 计算机科学 2022-10-19 Chi Zhang , Wei Yin , Zhibin Wang , Gang Yu , Bin Fu , Chunhua Shen

This paper presents a new method to extract image low-level features, namely mix histogram (MH), for content-based image retrieval. Since color and edge orientation features are important visual information which help the human visual…

计算机视觉与模式识别 · 计算机科学 2019-09-24 Mohammad Rezaei , Ali Ahmadi , Navid Naderi

We present a deep reinforcement learning method of progressive view inpainting for colored semantic point cloud scene completion under volume guidance, achieving high-quality scene reconstruction from only a single RGB-D image with severe…

计算机视觉与模式识别 · 计算机科学 2022-10-13 Zhaoxuan Zhang , Xiaoguang Han , Bo Dong , Tong Li , Baocai Yin , Xin Yang

Accurate depth estimation from images is a fundamental task in many applications including scene understanding and reconstruction. Existing solutions for depth estimation often produce blurry approximations of low resolution. This paper…

计算机视觉与模式识别 · 计算机科学 2019-03-12 Ibraheem Alhashim , Peter Wonka

360{\deg} images and videos have become an economic and popular way to provide VR experiences using real-world content. However, the manipulation of the stereo panoramic content remains less explored. In this paper, we focus on the…

图形学 · 计算机科学 2024-11-05 Kun Huang , Fanglue Zhang , Junhong Zhao , Yiheng Li , Neil Dodgson

Holographic-type communication brings an immersive tele-holography experience by delivering holographic contents to users. As the direct representation of holographic contents, hologram videos are naturally three-dimensional representation,…

信号处理 · 电气工程与系统科学 2025-03-10 Yiming Jiang , Yanwei Liu , Jinxia Liu , Antonios Argyriou , Yifei Chen , Wen Zhang

We propose a new learning-based approach for 3D particle field imaging using holography. Our approach uses a U-net architecture incorporating residual connections, Swish activation, hologram preprocessing, and transfer learning to cope with…

图像与视频处理 · 电气工程与系统科学 2020-02-19 Siyao Shao , Kevin Mallery , Santosh Kumar , Jiarong Hong

Synthetic images rendered by graphics engines are a promising source for training deep networks. However, it is challenging to ensure that they can help train a network to perform well on real images, because a graphics-based generation…

计算机视觉与模式识别 · 计算机科学 2020-04-28 Dawei Yang , Jia Deng

This paper investigates the channel estimation for holographic MIMO systems by unmasking their distinctions from the conventional one. Specifically, we elucidate that the channel estimation, subject to holographic MIMO's electromagnetically…

信息论 · 计算机科学 2023-11-28 Yuanbin Chen , Ying Wang , Zhaocheng Wang , Zhu Han

Thanks to High Dynamic Range (HDR) imaging methods, the scope of photography has seen profound changes recently. To be more specific, such methods try to reconstruct the lost luminosity of the real world caused by the limitation of regular…

计算机视觉与模式识别 · 计算机科学 2024-04-23 Ali Reza Omrani , Davide Moroni

This work presents a novel deep-learning-based pipeline for the inverse problem of image deblurring, leveraging augmentation and pre-training with synthetic data. Our results build on our winning submission to the recent Helsinki Deblur…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Theophil Trippe , Martin Genzel , Jan Macdonald , Maximilian März

In recent years, consumer-level depth cameras have been adopted for various applications. However, they often produce depth maps at only a moderately high frame rate (approximately 30 frames per second), preventing them from being used for…

图形学 · 计算机科学 2018-11-06 Ming-Ze Yuan , Lin Gao , Hongbo Fu , Shihong Xia

Estimating depth from a single RGB image is an ill-posed and inherently ambiguous problem. State-of-the-art deep learning methods can now estimate accurate 2D depth maps, but when the maps are projected into 3D, they lack local detail and…

计算机视觉与模式识别 · 计算机科学 2017-12-05 Jun Li , Reinhard Klein , Angela Yao

Sky/cloud images obtained from ground-based sky-cameras are usually captured using a fish-eye lens with a wide field of view. However, the sky exhibits a large dynamic range in terms of luminance, more than a conventional camera can…

计算机视觉与模式识别 · 计算机科学 2018-03-06 Soumyabrata Dev , Florian M. Savoy , Yee Hui Lee , Stefan Winkler

In this paper we study the problem of object detection for RGB-D images using semantically rich image and depth features. We propose a new geocentric embedding for depth images that encodes height above ground and angle with gravity for…

计算机视觉与模式识别 · 计算机科学 2014-07-23 Saurabh Gupta , Ross Girshick , Pablo Arbeláez , Jitendra Malik

Automatic estimation of cardiac ultrasound image quality can be beneficial for guiding operators and ensuring the accuracy of clinical measurements. Previous work often fails to distinguish the view correctness of the echocardiogram from…

Depth information plays a crucial role in autonomous systems for environmental perception and robot state estimation. With the rapid development of deep neural network technology, depth estimation has been extensively studied and shown…

机器人学 · 计算机科学 2024-11-11 Quang Truong Nguyen , Thanh Nguyen Canh , Xiem HoangVan