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Forged images have a ubiquitous presence in today's world due to ease of availability of image manipulation tools. In this letter, we propose a deep learning-based novel approach which utilizes the inherent relationship between DCT…

图像与视频处理 · 电气工程与系统科学 2020-03-23 Vinay Verma , Deepak Singh , Nitin Khanna

In this study, we propose a novel scheme for systematic improvement of lossless image compression coders from the point of view of the universal codes in information theory. In the proposed scheme, we describe a generative model class of…

信息论 · 计算机科学 2019-04-17 Yuta Nakahara , Toshiyasu Matsushima

Multispectral transmission imaging provides strong benefits for early breast cancer screening. The frame accumulation method addresses the challenge of low grayscale and signal-to-noise ratio resulting from the strong absorption and…

图像与视频处理 · 电气工程与系统科学 2024-04-04 Jiatong Li , Gang Li , Nan Su Su Win , Ling Lin

The data storage has been one of the bottlenecks in surveillance systems. The conventional video compression algorithms such as H.264 and H.265 do not fully utilize the low information density characteristic of the surveillance video. In…

计算机视觉与模式识别 · 计算机科学 2020-09-29 Lirong Wu , Kejie Huang , Haibin Shen , Lianli Gao

In this paper, we introduce a bilinear composition loss function to address the problem of image dehazing. Previous methods in image dehazing use a two-stage approach which first estimate the transmission map followed by clear image…

计算机视觉与模式识别 · 计算机科学 2017-10-03 Hui Yang , Jinshan Pan , Qiong Yan , Wenxiu Sun , Jimmy Ren , Yu-Wing Tai

Dual camera systems have assisted in the proliferation of various applications, such as optical zoom, low-light imaging and High Dynamic Range (HDR) imaging. In this work, we explore an optimal method for capturing the scene HDR and…

图像与视频处理 · 电气工程与系统科学 2020-03-13 Pradyumna Chari , Anil Kumar Vadathya , Kaushik Mitra

This paper describes a lossy method for compressing raw images produced by CCDs or similar devices. The method is very simple: lossy quantization followed by lossless compression using general-purpose compression tools such as gzip and…

天体物理学 · 物理学 2007-05-23 Alan M. Watson

Current text-image approaches (e.g., CLIP) typically adopt dual-encoder architecture using pre-trained vision-language representation. However, these models still pose non-trivial memory requirements and substantial incremental indexing…

计算机视觉与模式识别 · 计算机科学 2022-05-02 Siyu Ren , Kenny Q. Zhu

We propose an image identification scheme for double-compressed encrypted JPEG images that aims to identify encrypted JPEG images that are generated from an original JPEG image. To store images without any visual sensitive information on…

图像与视频处理 · 电气工程与系统科学 2020-02-19 Kenta Iida , Hitoshi Kiya

We propose a method for lossy image compression based on recurrent, convolutional neural networks that outperforms BPG (4:2:0 ), WebP, JPEG2000, and JPEG as measured by MS-SSIM. We introduce three improvements over previous research that…

计算机视觉与模式识别 · 计算机科学 2017-03-30 Nick Johnston , Damien Vincent , David Minnen , Michele Covell , Saurabh Singh , Troy Chinen , Sung Jin Hwang , Joel Shor , George Toderici

Recent imaging technologies are rapidly evolving for sampling richer and more immersive representations of the 3D world. And one of the emerging technologies are light field (LF) cameras based on micro-lens arrays. To record the directional…

计算机视觉与模式识别 · 计算机科学 2018-07-27 Jie Chen , Junhui Hou , Lap-Pui Chau

While recent neural codecs achieve strong performance at low bitrates when optimized for perceptual quality, their effectiveness deteriorates significantly under ultra-low bitrate conditions. To mitigate this, generative compression methods…

计算机视觉与模式识别 · 计算机科学 2026-02-06 Chuqin Zhou , Xiaoyue Ling , Yunuo Chen , Jincheng Dai , Guo Lu , Wenjun Zhang

Efficient point cloud coding has become increasingly critical for multiple applications such as virtual reality, autonomous driving, and digital twin systems, where rich and interactive 3D data representations may functionally make the…

图像与视频处理 · 电气工程与系统科学 2025-03-13 André F. R. Guarda , Nuno M. M. Rodrigues , Fernando Pereira

We introduce a stop-code tolerant (SCT) approach to training recurrent convolutional neural networks for lossy image compression. Our methods introduce a multi-pass training method to combine the training goals of high-quality…

计算机视觉与模式识别 · 计算机科学 2017-05-19 Michele Covell , Nick Johnston , David Minnen , Sung Jin Hwang , Joel Shor , Saurabh Singh , Damien Vincent , George Toderici

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

This paper presents a pixel-by-pixel spatial prediction method for lossless intra coding within High Efficiency Video Coding (HEVC). A well-known previous pixel-by-pixel spatial prediction method uses only two neighboring pixels for…

多媒体 · 计算机科学 2016-01-19 Saeed R. Alvar , Fatih Kamisli

An image super-resolution method from multiple observation of low-resolution images is proposed. The method is based on sub-pixel accuracy block matching for estimating relative displacements of observed images, and sparse signal…

计算机视觉与模式识别 · 计算机科学 2014-02-18 Toshiyuki Kato , Hideitsu Hino , Noboru Murata

Tone mapping operators and multi-exposure fusion methods allow us to enjoy the informative contents of high dynamic range (HDR) images with standard dynamic range devices, but also introduce distortions into HDR contents. Therefore methods…

多媒体 · 计算机科学 2021-02-11 Qin He , Dingquan Li , Tingting Jiang , Ming Jiang

Existing mezzanine image codecs lack specialized screen content coding tools and therefore struggle to maintain high image quality under bandwidth constraints, especially in areas with dense text. Although distribution codecs offer advanced…

硬件体系结构 · 计算机科学 2026-04-01 Chenlong He , Leilei Huang , Wei Li , Hanyang Cui , Zhijian Hao , Xiaoyang Zeng , Yibo Fan

In this paper we tackle the problem of stereo image compression, and leverage the fact that the two images have overlapping fields of view to further compress the representations. Our approach leverages state-of-the-art single-image…

图像与视频处理 · 电气工程与系统科学 2019-08-13 Jerry Liu , Shenlong Wang , Raquel Urtasun