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The scene graph is a new data structure describing objects and their pairwise relationship within image scenes. As the size of scene graph in vision applications grows, how to losslessly and efficiently store such data on disks or transmit…

Multimedia · Computer Science 2023-04-27 Yufeng Zhang , Weiyao Lin , Wenrui Dai , Huabin Liu , Hongkai Xiong

We consider the problem of joint source-channel coding for semantic communication from a rateless perspective, the purpose of which is to settle the balance between reliability (distortion/perception) and effectiveness (rate) of…

Information Retrieval · Computer Science 2025-01-23 Cheng Peng , Rulong Wang , Yong Xiao

With the continuous increase in the number and resolution of video surveillance cameras, the burden of transmitting and storing surveillance video is growing. Traditional communication methods based on Shannon's theory are facing…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Baoping Cheng , Yukun Zhang , Liming Wang , Xiaoyan Xie , Tao Fu , Dongkun Wang , Xiaoming Tao

For learned image compression, the autoregressive context model is proved effective in improving the rate-distortion (RD) performance. Because it helps remove spatial redundancies among latent representations. However, the decoding process…

Image and Video Processing · Electrical Eng. & Systems 2021-04-02 Dailan He , Yaoyan Zheng , Baocheng Sun , Yan Wang , Hongwei Qin

Tokenization plays a critical role in language modeling, yet existing approaches such as Byte-Pair Encoding (BPE) or WordPiece operate purely on frequency statistics, ignoring the underlying semantic structure of text. This leads to…

Computation and Language · Computer Science 2025-08-22 Dong Liu , Yanxuan Yu

The use of a learnable codebook provides an efficient way for semantic communications to map vector-based high-dimensional semantic features onto discrete symbol representations required in digital communication systems. In this paper, the…

Information Theory · Computer Science 2025-10-16 Lingyi Wang , Rashed Shelim , Walid Saad , Naren Ramakrishnan

Autonomous vehicles and Advanced Driving Assistance Systems (ADAS) have the potential to radically change the way we travel. Many such vehicles currently rely on segmentation and object detection algorithms to detect and track objects…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Ravi Kakaiya , Rakshith Sathish , Ramanathan Sethuraman , Debdoot Sheet

Skull stripping is usually the first step for most brain analysisprocess in magnetic resonance images. A lot of deep learn-ing neural network based methods have been developed toachieve higher accuracy. Since the 3D deep learning…

Image and Video Processing · Electrical Eng. & Systems 2019-10-25 Zhen Liu , Borui Xiao , Yuemeng Li , Yong Fan

Neural speech codecs aim to compress input signals into minimal bits while maintaining content quality in a low-latency manner. However, existing neural codecs often trade model complexity for reconstruction performance. These codecs…

Sound · Computer Science 2024-10-04 Yuzhe Gu , Enmao Diao

To enable critical applications such as remote diagnostics, image classification must be guaranteed under bandwidth constraints and unreliable wireless channels through joint source and channel coding (JSCC) design. However, most existing…

Image and Video Processing · Electrical Eng. & Systems 2026-03-03 Wenchao Wu , Min Qiu , Yansha Deng , Jinhong Yuan

A new coding scheme for image transmission over noisy channel is proposed. Similar to standard image compression, the scheme includes a linear transform followed by successive refinement scalar quantization. Unlike conventional schemes, in…

Information Theory · Computer Science 2012-10-03 Ozgun Y. Bursalioglu , Giuseppe Caire , Dariush Divsalar

The context transformation and generalized context transformation methods, we introduced recently, were able to reduce zero order entropy by exchanging digrams, and as a consequence, they were removing mutual information between consecutive…

Information Theory · Computer Science 2017-01-06 Michal Vašinek , Jan Platoš

Recent deep learning-based methods for lossy image compression achieve competitive rate-distortion performance through extensive end-to-end training and advanced architectures. However, emerging applications increasingly prioritize semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Ruiqi Shen , Haotian Wu , Wenjing Zhang , Jiangjing Hu , Deniz Gunduz

Both performance and efficiency are important to semantic segmentation. State-of-the-art semantic segmentation algorithms are mostly based on dilated Fully Convolutional Networks (dilatedFCN), which adopt dilated convolutions in the…

Computer Vision and Pattern Recognition · Computer Science 2020-08-28 Jianbo Liu , Junjun He , Jiawei Zhang , Jimmy S. Ren , Hongsheng Li

Vision transformers have demonstrated significant advantages in computer vision tasks due to their ability to capture long-range dependencies and contextual relationships through self-attention. However, existing position encoding…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 Xi Chen , Shiyang Zhou , Muqi Huang , Jiaxu Feng , Yun Xiong , Kun Zhou , Biao Yang , Yuhui Zhang , Huishuai Bao , Sijia Peng , Chuan Li , Feng Shi

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…

Computer Vision and Pattern Recognition · Computer Science 2017-05-19 Michele Covell , Nick Johnston , David Minnen , Sung Jin Hwang , Joel Shor , Saurabh Singh , Damien Vincent , George Toderici

3D scene understanding is fundamental for embodied AI and robotics, supporting reliable perception for interaction and navigation. Recent approaches achieve zero-shot, open-vocabulary 3D semantic mapping by assigning embedding vectors to 2D…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Mohamad Amin Mirzaei , Pantea Amoie , Ali Ekhterachian , Matin Mirzababaei , Babak Khalaj

Enriching information of spectrum coverage, radiomap plays an important role in many wireless communication applications, such as resource allocation and network optimization. To enable real-time, distributed spectrum management,…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Yueling Zhou , Achintha Wijesinghe , Yue Wang , Songyang Zhang , Zhipeng Cai

Coded compressed sensing is an algorithmic framework tailored to sparse recovery in very large dimensional spaces. This framework is originally envisioned for the unsourced multiple access channel, a wireless paradigm attuned to…

Information Theory · Computer Science 2019-10-23 Vamsi K. Amalladinne , Jean-Francois Chamberland , Krishna R. Narayanan

We study the task of weakly-supervised point cloud semantic segmentation with sparse annotations (e.g., less than 0.1% points are labeled), aiming to reduce the expensive cost of dense annotations. Unfortunately, with extremely sparse…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Lizhao Liu , Zhuangwei Zhuang , Shangxin Huang , Xunlong Xiao , Tianhang Xiang , Cen Chen , Jingdong Wang , Mingkui Tan