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We study the problem of reconstructing a block-sparse signal from compressively sampled measurements. In certain applications, in addition to the inherent block-sparse structure of the signal, some prior information about the block support,…

信息论 · 计算机科学 2019-02-25 Sajad Daei , Farzan Haddadi , Arash Amini

Multifarious image enhancement algorithms have been used in different applications. Still, some algorithms or modules are imperfect for practical use. When the image enhancement modules have been fixed or combined by a series of algorithms,…

计算机视觉与模式识别 · 计算机科学 2011-03-03 Lijun Wang , Ling Shao

The Object-Based Image Coding (OBIC) that was extensively studied about two decades ago, promised a vast application perspective for both ultra-low bitrate communication and high-level semantical content understanding, but it had rarely…

图像与视频处理 · 电气工程与系统科学 2020-03-20 Qi Xia , Haojie Liu , Zhan Ma

Given a set of samples, a few of them being possibly saturated, we propose an efficient algorithm in order to cancel saturation while reconstructing band-limited signals. Our method satisfies a minimum-loss constraint and relies on…

信号处理 · 电气工程与系统科学 2018-09-20 Kyong Hwan Jin , Gain Kim , Yusuf Leblebici , Jong Chul Ye , Michael Unser

Traditional algorithms for compressive sensing recovery are computationally expensive and are ineffective at low measurement rates. In this work, we propose a data driven non-iterative algorithm to overcome the shortcomings of earlier…

计算机视觉与模式识别 · 计算机科学 2017-08-18 Suhas Lohit , Kuldeep Kulkarni , Ronan Kerviche , Pavan Turaga , Amit Ashok

Video reconstruction from a single motion-blurred image is a challenging problem, which can enhance the capabilities of existing cameras. Recently, several works addressed this task using conventional imaging and deep learning. Yet, such…

图像与视频处理 · 电气工程与系统科学 2022-12-20 Erez Yosef , Shay Elmalem , Raja Giryes

In recent years, reversible data hiding has attracted much more attention than before. Reversibility signifies that the original media can be recovered without any loss from the marked media after extracting the embedded message. This paper…

密码学与安全 · 计算机科学 2011-02-09 Xu-Ren Luo , Chen-Hui Jerry Lin , Te-Lung Yin

In this paper, we introduce a computational framework for recovering a high-resolution approximation of an unknown function from its low-resolution indirect measurements as well as high-resolution training observations by merging the…

统计理论 · 数学 2021-10-15 Milana Gataric

With the growing demand for video applications, many advanced learned video compression methods have been developed, outperforming traditional methods in terms of objective quality metrics such as PSNR. Existing methods primarily focus on…

图像与视频处理 · 电气工程与系统科学 2023-10-10 Meng Li , Yibo Shi , Jing Wang , Yunqi Huang

A simple and inexpensive (low-power and low-bandwidth) modification is made to a conventional off-the-shelf color video camera, from which we recover {multiple} color frames for each of the original measured frames, and each of the…

计算机视觉与模式识别 · 计算机科学 2014-02-28 Xin Yuan , Patrick Llull , Xuejun Liao , Jianbo Yang , Guillermo Sapiro , David J. Brady , Lawrence Carin

Image animation brings life to the static object in the source image according to the driving video. Recent works attempt to perform motion transfer on arbitrary objects through unsupervised methods without using a priori knowledge.…

计算机视觉与模式识别 · 计算机科学 2022-03-30 Jian Zhao , Hui Zhang

We propose application-layer coding schemes to recover lost data in delay-sensitive uplink (sensor-to-gateway) communications in the Internet of Things. Built on an approach that combines retransmissions and forward erasure correction, the…

信息论 · 计算机科学 2022-07-26 Vatsalya Chaubey , Siddhartha S. Borkotoky

Image inpainting has made significant advances in recent years. However, it is still challenging to recover corrupted images with both vivid textures and reasonable structures. Some specific methods only tackle regular textures while losing…

计算机视觉与模式识别 · 计算机科学 2022-03-17 Qiaole Dong , Chenjie Cao , Yanwei Fu

A modular method was suggested before to recover a band limited signal from the sample and hold and linearly interpolated (or, in general, an nth-order-hold) version of the regular samples. In this paper a novel approach for compensating…

多媒体 · 计算机科学 2010-11-12 Ali Ayremlou , Mohammad Tofighi , Farokh Marvasti

The 1-bit compressed sensing framework enables the recovery of a sparse vector x from the sign information of each entry of its linear transformation. Discarding the amplitude information can significantly reduce the amount of data, which…

数据分析、统计与概率 · 物理学 2019-04-01 Yingying Xu , Yoshiyuki Kabashima , Lenka Zdeborova

Block based motion estimation is integral to inter prediction processes performed in hybrid video codecs. Prevalent block matching based methods that are used to compute block motion vectors (MVs) rely on computationally intensive search…

图像与视频处理 · 电气工程与系统科学 2022-12-06 Somdyuti Paul , Andrey Norkin , Alan C. Bovik

Recently, deep learning methods have made a significant improvement in compressive sensing image reconstruction task. In the existing methods, the scene is measured block by block due to the high computational complexity. This results in…

计算机视觉与模式识别 · 计算机科学 2018-05-30 Jiang Du , Xuemei Xie , Chenye Wang , Guangming Shi , Xun Xu , Yuxiang Wang

This paper proposes a joint framework wherein lifting-based, separable, image-matched wavelets are estimated from compressively sensed (CS) images and used for the reconstruction of the same. Matched wavelet can be easily designed if full…

计算机视觉与模式识别 · 计算机科学 2017-08-02 Naushad Ansari , Anubha Gupta

Currently, most deep learning methods cannot solve the problem of scarcity of industrial product defect samples and significant differences in characteristics. This paper proposes an unsupervised defect detection algorithm based on a…

计算机视觉与模式识别 · 计算机科学 2022-12-27 Chao Hu , Jian Yao , Weijie Wu , Weibin Qiu , Liqiang Zhu

In this work we propose a novel deep learning approach for ultra-low bitrate video compression for video conferencing applications. To address the shortcomings of current video compression paradigms when the available bandwidth is extremely…

计算机视觉与模式识别 · 计算机科学 2020-12-02 Goluck Konuko , Giuseppe Valenzise , Stéphane Lathuilière