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Lossy compression algorithms aim to compactly encode images in a way which enables to restore them with minimal error. We show that a key limitation of existing algorithms is that they rely on error measures that are extremely sensitive to…

计算机视觉与模式识别 · 计算机科学 2018-04-13 Tamar Rott Shaham , Tomer Michaeli

Plenoptic images and videos bearing rich information demand a tremendous amount of data storage and high transmission cost. While there has been much study on plenoptic image coding, investigations into plenoptic video coding have been very…

图像与视频处理 · 电气工程与系统科学 2022-07-04 Thuc Nguyen Huu , Vinh Van Duong , Jonghoon Yim , Byeungwoo Jeon

The emerging and existing light field displays are highly capable of realistic presentation of 3D scenes on auto-stereoscopic glasses-free platforms. The light field size is a major drawback while utilising 3D displays and streaming…

计算机视觉与模式识别 · 计算机科学 2022-06-22 Sally Khaidem , Mansi Sharma

Remote medical diagnosis has emerged as a critical and indispensable technique in practical medical systems, where medical data are required to be efficiently compressed and transmitted for diagnosis by either professional doctors or…

图像与视频处理 · 电气工程与系统科学 2023-10-23 Guangqi Xie , Xin Li , Xiaohan Pan , Zhibo Chen

An effective method for compression of ECG signals, which falls within the transform lossy compression category, is proposed. The transformation is realized by a fast wavelet transform. The effectiveness of the approach, in relation to the…

信号处理 · 电气工程与系统科学 2019-01-03 Laura Rebollo-Neira

The interest of compressive sampling in ultrasound imaging has been recently extensively evaluated by several research teams. Following the different application setups, it has been shown that the RF data may be reconstructed from a small…

计算机视觉与模式识别 · 计算机科学 2015-12-07 Zhouye Chen , Adrian Basarab , Denis Kouamé

Computed tomography (CT) has played a vital role in medical diagnosis, assessment, and therapy planning, etc. In clinical practice, concerns about the increase of X-ray radiation exposure attract more and more attention. To lower the X-ray…

图像与视频处理 · 电气工程与系统科学 2022-01-19 Zhicheng Zhang , Xiaokun Liang , Wei Zhao , Lei Xing

Human motion capture (mocap) is a widely used technique for digitalizing human movements. With growing usage, compressing mocap data has received increasing attention, since compact data size enables efficient storage and transmission. Our…

多媒体 · 计算机科学 2014-10-20 Junhui Hou , Lap-Pui Chau , Nadia Magnenat-Thalmann , Ying He

In this paper, we propose a partition-masked Convolution Neural Network (CNN) to achieve compressed-video enhancement for the state-of-the-art coding standard, High Efficiency Video Coding (HECV). More precisely, our method utilizes the…

多媒体 · 计算机科学 2019-12-30 Xiaoyi He , Qiang Hu , Xintong Han , Xiaoyun Zhang , Chongyang Zhang , Weiyao Lin

Learning-based lossy image compression usually involves the joint optimization of rate-distortion performance. Most existing methods adopt spatially invariant bit length allocation and incorporate discrete entropy approximation to constrain…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Mu Li , Wangmeng Zuo , Shuhang Gu , Jane You , David Zhang

The recorded Electroencephalography (EEG) data comes with a large size due to the high sampling rate. Therefore, large space and more bandwidth are required for storing and transmitting the EEG data. Thus, preprocessing and compressing the…

信号处理 · 电气工程与系统科学 2019-05-09 Madyan Alsenwi , Tawfik Ismail , M. Saeed Darweesh

With the increasing growth of technology and the entrance into the digital age, we have to handle a vast amount of information every time which often presents difficulties. So, the digital information must be stored and retrieved in an…

多媒体 · 计算机科学 2012-08-15 Kamrul Hasan Talukder , Koichi Harada

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

Recent results in telecardiology show that compressed sensing (CS) is a promising tool to lower energy consumption in wireless body area networks for electrocardiogram (ECG) monitoring. However, the performance of current CS-based…

计算工程、金融与科学 · 计算机科学 2016-11-18 Luisa F. Polania , Rafael E. Carrillo , Manuel Blanco-Velasco , Kenneth E. Barner

Good quality video coding for low bit-rate applications is important for transmission over narrow-bandwidth channels and for storage with limited memory capacity. In this work, we develop a previous analysis for image compression at low…

多媒体 · 计算机科学 2015-04-27 Yehuda Dar , Alfred M. Bruckstein

In imaging systems, following acquisition, an image/video is transmitted or stored and eventually presented to human observers using different and often imperfect display devices. While the resulting quality of the output image may severely…

多媒体 · 计算机科学 2018-08-01 Yehuda Dar , Michael Elad , Alfred M. Bruckstein

Talking head video compression has advanced with neural rendering and keypoint-based methods, but challenges remain, especially at low bit rates, including handling large head movements, suboptimal lip synchronization, and distorted facial…

图像与视频处理 · 电气工程与系统科学 2025-06-17 Riku Takahashi , Ryugo Morita , Jinjia Zhou

A new approach to data compression is developed and applied to multimedia content. This method separates messages into components suitable for both lossless coding and 'lossy' or statistical coding techniques, compressing complex objects by…

信息论 · 计算机科学 2011-12-26 John Scoville

We investigate the task of retrieving information from compositional distributed representations formed by Hyperdimensional Computing/Vector Symbolic Architectures and present novel techniques which achieve new information rate bounds.…

Low-dose computed tomography (CT) has attracted a major attention in the medical imaging field, since CT-associated x-ray radiation carries health risks for patients. The reduction of CT radiation dose, however, compromises the…

计算机视觉与模式识别 · 计算机科学 2019-07-16 Hongming Shan , Yi Zhang , Qingsong Yang , Uwe Kruger , Mannudeep K. Kalra , Ling Sun , Wenxiang Cong , Ge Wang