This paper introduces a new framework for confidentiality preserving rank-ordered search and retrieval over large document collections. The proposed not only protects document/query against an outside intruder, but also prevents untrusted data center from learning information about the query collection. We present practical techniques proper integration of relevance scoring methods cryptographic techniques, such as order encryption, to protect collections indices provide efficient accurate...

We introduce V-Trans4Style, an innovative algorithm tailored for dynamic video content editing needs. It is designed to adapt videos different production styles like documentaries, dramas, feature films, or a specific YouTube channel's video-making technique. Our recommends optimal visual transitions help achieve this flexibility using more bottom-up approach. first employ transformer-based encoder-decoder network learn recommending temporally consistent and visually seamless sequences of...

In this paper, we propose a framework to transmit multiple scalable video programs over downlink multiuser orthogonal frequency division multiplex (OFDM) networks in real time. The explores the scalability of codec and multidimensional diversity OFDM systems achieve optimal service objectives subject constraints on delay limited system resources. We consider two essential objectives, namely, fairness efficiency. Fairness concerns quality deviation among users who subscribe same service,...

In this paper, a network-aware and source-aware video streaming system is proposed to support interactive multiuser communications within single-cell multicell IEEE 802.11 networks. Unlike the traditional services, strict delay constraints of an pose more challenges. These challenges include heterogeneity uplink downlink channel conditions experienced by different users, resource allocation limited radio resources, incorporation cross-layer design, diversity content complexities exhibited...

This paper studies efficient bandwidth resource allocation for streaming multiple MPEG-4 fine granularity scalability (FGS) video programs to users. We begin with a simple single-user scenario and propose rate-control algorithm that has low delay achieves an excellent tradeoff between the average visual distortion quality fluctuation. The proposed employs two weight factors adjusting tradeoff, optimal choice of these is derived. then extend multiuser case dynamic computational complexity. By...

Abstract This paper surveys major techniques in 3D communications area, which covers the whole pipeline of video communication framework, including content creation, data representation, compression, delivery, decompression, post‐processing, and scene rendering stages. Both current state‐of‐the‐art, stereo 3D, future trend, free‐viewpoint are demonstrated details. On other hand, highlights a few features emerging 4G wireless systems that critical for system design. At end, topics with...

With the advancement of video-compression technology and wide deployment wireless networks, there is an increasing demand for video communication services, many design challenges remain to be overcome. In this article, we discuss how dynamically allocate resources according changing environments requirements, so as improve overall system performance ensure individual quality service (QoS). Specifically, consider two aspects with regard issues: cross-layer design, which jointly optimizes...

In this paper, we present a novel multi-modal attention guidance method designed to address the challenges of turn-taking dynamics in meetings and enhance group conversations within virtual reality (VR) environments. Recognizing difficulties posed by confined field view absence detailed gesture tracking VR, our proposed aims mitigate noticing new speakers attempting join conversation. This approach tailors guidance, providing nuanced experience for highly engaged participants while offering...

Cooperative transmission has been proposed as a novel strategy that takes advantage of broadcast nature wireless networks, forms virtual MIMO system, and provides diversity gains. In this paper, video protocols are proposed, in which the spectrum resources first allocated for source side to packets relay destination, then transmit information generated from received packets. The optimized minimize end-to-end expected distortion via choosing bandwidth/power allocation, configuration...

If a low dynamic range (LDR) image or video is inverse tone mapped to higher range, there can be banding artifacts in the output high (HDR) video. We design selective sparse filter remove and at same time preserve edges details. The able reduce other artifacts, such as blocky which are due compression of LDR image/video. computationally efficient.

When a low or standard dynamic range video is inverse tone mapped to high (HDR), there can be banding artifacts in the output HDR video. We design highly integrated architecture that detect and alleviate while preserving true edges details an extremely efficient way. This achieved by 7-tap edge-aware selective sparse filter. Coding artifacts, such as blocky also reduced this The filter includes some parameters depend on strengths of artifacts. A parameter selection mechanism presented which...

In a backward compatible HDR image/video compression, it is general approach to reconstruct from compressed LDR as prediction original HDR, which referred inverse tone mapping. Experimental results show that 2- piecewise 2^nd order polynomial has the best mapping accuracy than 1 piece high or 2-piecewise linear, but also most time-consuming method because find optimal pivot point split range 2 pieces requires exhaustive search. this paper, we propose fast algorithm completes in...

Digitally acquired high dynamic range (HDR) video baseband signal can take 10-12 bits per color channel. It is economically important to be able reuse the legacy 8 or 10-bit codecs efficiently compress HDR video. Linear nonlinear mapping on intensity applied reduce before sent codec, and we refer this reduction step as a quantization. We show analytically verify using test sequences that use of quantizer lowers coding efficiency. Experiments strengthened by 1.6 bits, drop PSNR at bitrate up...

Low-light image enhancement aims at enlarging the intensity of pixels to better match human perception and improve performance subsequent vision tasks. While it is relatively easy enlighten a globally low-light image, lighting condition realistic scenes usually non-uniform complex, e.g., some images may contain both bright extremely dark regions, with or without rich features information. Existing methods often generate abnormal light-enhancement results over-exposure artifacts proper...

Neural fields are a new signal representation and widely used now to represent various forms of multimedia. However, due their size, they could introduce latency when delivered over the network. A way mitigate that is use Multiple description coding (MDC), provides multiple descriptions same content which can then be transmitted along different paths improve reliability/efficiency. In this paper, we novel MDC framework based on neural fields. We first apply randomly sampled field (with small...

High dynamic range imaging is currently being introduced to television, cinema and computer games. While it has been found that a fixed encoding for high imagery needs at least 11 12 bits of tonal resolution, current mainstream image transmission interfaces, codecs file formats are limited 10 bits. To be able use generation pipelines, this paper presents baseband quantization scheme exploits content characteristics reduce the needed resolution per image. The method low computational...