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In this paper, we study a real-world JPEG image restoration problem with bit errors on the encrypted bitstream. The bit errors bring unpredictable color casts and block shifts on decoded image contents, which cannot be resolved by existing…

图像与视频处理 · 电气工程与系统科学 2023-04-17 Wenyang Liu , Yi Wang , Kim-Hui Yap , Lap-Pui Chau

Handling digital images is almost always accompanied by a lossy compression in order to facilitate efficient transmission and storage. This introduces an unavoidable tension between the allocated bit-budget (rate) and the faithfulness of…

图像与视频处理 · 电气工程与系统科学 2020-08-04 Xiyang Luo , Hossein Talebi , Feng Yang , Michael Elad , Peyman Milanfar

This paper presents a novel framework for enhancing physical-layer security in integrated sensing and communication (ISAC) systems by leveraging the reconfigurability of fluid antenna systems (FAS). We propose a joint precoding and port…

信号处理 · 电气工程与系统科学 2025-10-01 Abdelhamid Salem , Hao Xu , Kai-Kit Wong , Chan-Byoung Chae , Yangyang Zhang

Most current research in the domain of image compression focuses solely on achieving state of the art compression ratio, but that is not always usable in today's workflow due to the constraints on computing resources. Constant market…

图像与视频处理 · 电气工程与系统科学 2021-01-07 Benoit Brummer , Christophe De Vleeschouwer

As a commonly-used image compression format, JPEG has been broadly applied in the transmission and storage of images. To further reduce the compression cost while maintaining the quality of JPEG images, lossless transcoding technology has…

计算机视觉与模式识别 · 计算机科学 2022-08-25 Xiaoshuai Fan , Xin Li , Zhibo Chen

Lossy face image compression can degrade the image quality and the utility for the purpose of face recognition. This work investigates the effect of lossy image compression on a state-of-the-art face recognition model, and on multiple face…

计算机视觉与模式识别 · 计算机科学 2023-02-27 Torsten Schlett , Sebastian Schachner , Christian Rathgeb , Juan Tapia , Christoph Busch

Video semantic segmentation is active in recent years benefited from the great progress of image semantic segmentation. For such a task, the per-frame image segmentation is generally unacceptable in practice due to high computation cost. To…

计算机视觉与模式识别 · 计算机科学 2020-11-13 Jiafan Zhuang , Zilei Wang , Bingke Wang

A two-layer lossless image coding method compatible with JPEG XS is proposed. JPEG XS is a new international standard for still image coding that has the characteristics of very low latency and very low complexity. However, it does not…

多媒体 · 计算机科学 2020-08-12 Hiroyuki Kobayashi , Hitoshi Kiya

Recent expansions in multimedia devices gather enormous amounts of real-time images for processing and inference. The images are first compressed using compression schemes, like JPEG, to reduce storage costs and power for transmitting the…

图像与视频处理 · 电气工程与系统科学 2024-06-25 Ming-Che Li , Archisman Ghosh , Shreyas Sen

An efficient two-layer coding method using the histogram packing technique with the backward compatibility to the legacy JPEG is proposed in this paper. The JPEG XT, which is the international standard to compress HDR images, adopts…

计算机视觉与模式识别 · 计算机科学 2018-06-29 Osamu Watanabe , Hiroyuki Kobayashi , Hitoshi Kiya

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

Image restoration aims to recover high-quality images from degraded observations. When the degradation process is known, the recovery problem can be formulated as an inverse problem, and in a Bayesian context, the goal is to sample a clean…

图像与视频处理 · 电气工程与系统科学 2025-10-13 Darshan Thaker , Abhishek Goyal , René Vidal

An efficient two-layer coding method using the histogram packing technique with the backward compatibility to the legacy JPEG is proposed in this paper. The JPEG XT, which is the international standard to compress HDR images, adopts…

计算机视觉与模式识别 · 计算机科学 2018-11-14 Osamu Watanabe , Hiroyuki Kobayashi , Hitoshi Kiya

We propose a hybrid protocol combining a rectangular error-correcting code - paired with an error-detecting code - and a backward error correction in order to send packages of information over a noisy channel. We depict a linear-time…

网络与互联网体系结构 · 计算机科学 2019-04-04 Binh-Minh Bui-Xuan , Pierre Meyer , Antoine Roux

Current optical coherent transponders technology is driving data rates towards 1 Tb/s/{\lambda}and beyond. This trend requires both high-performance coded modulation schemes and efficient implementation of the forward-error-correction (FEC)…

信号处理 · 电气工程与系统科学 2020-07-15 Gabriele Liga , Bin Chen , Sjoerd van der Heide , Alireza Sheikh , Menno van der Hout , Chigo Okonkwo , Alex Alvarado

Forward Error Correction (FEC) is used ubiquitously in the communication pipeline. We explore noncooperative decoding where we aim to recover the code rate of a linear block code. We present a metric to characterize the quality of the code…

信息论 · 计算机科学 2026-03-03 Atreya Vedantam , Radha Krishna Ganti

Packet loss during video conferencing often results in poor quality and video freezing. Retransmitting lost packets is often impractical due to the need for real-time playback, and using Forward Error Correction (FEC) for packet recovery is…

网络与互联网体系结构 · 计算机科学 2024-10-08 Tianhong Li , Vibhaalakshmi Sivaraman , Pantea Karimi , Lijie Fan , Mohammad Alizadeh , Dina Katabi

We propose an efficient two-layer near-lossless coding method using an extended histogram packing technique with backward compatibility to the legacy JPEG standard. The JPEG XT, which is the international standard to compress HDR images,…

图像与视频处理 · 电气工程与系统科学 2020-01-08 Hiroyuki Kobayashi , Osamu Watanabe , Hitoshi Kiya

Caching at the wireless edge can be used to keep up with the increasing demand for high-definition wireless video streaming. By prefetching popular content into memory at wireless access points or end-user devices, requests can be served…

信息论 · 计算机科学 2019-12-03 Parisa Hassanzadeh , Antonia M. Tulino , Jaime Llorca , Elza Erkip

Latency-critical computer vision systems, such as autonomous driving or drone control, require fast image or video compression when offloading neural network inference to a remote computer. To ensure low latency on a near-sensor edge…

计算机视觉与模式识别 · 计算机科学 2022-11-24 Jakub Žádník , Markku Mäkitalo , Pekka Jääskeläinen