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This paper proposes the Degradation Classification Pre-Training (DCPT), which enables models to learn how to classify the degradation type of input images for universal image restoration pre-training. Unlike the existing self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 JiaKui Hu , Lujia Jin , Zhengjian Yao , Yanye Lu

In many video coding systems, separable transforms (such as two-dimensional DCT-2) have been used to code block residual signals obtained after prediction. This paper proposes a parametric approach to build graph-based separable transforms…

Multimedia · Computer Science 2020-04-21 Hilmi E. Egilmez , Oguzhan Teke , Amir Said , Vadim Seregin , Marta Karczewicz

Reconstructing dynamic, time-varying scenes with computed tomography (4D-CT) is a challenging and ill-posed problem common to industrial and medical settings. Existing 4D-CT reconstructions are designed for sparse sampling schemes that…

Image and Video Processing · Electrical Eng. & Systems 2021-04-26 Albert W. Reed , Hyojin Kim , Rushil Anirudh , K. Aditya Mohan , Kyle Champley , Jingu Kang , Suren Jayasuriya

Descriptive region features extracted by object detection networks have played an important role in the recent advancements of image captioning. However, they are still criticized for the lack of contextual information and fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Yunpeng Luo , Jiayi Ji , Xiaoshuai Sun , Liujuan Cao , Yongjian Wu , Feiyue Huang , Chia-Wen Lin , Rongrong Ji

This paper presents a novel method to determine rate-distortion optimized transform coefficients for efficient compression of videos generated from point clouds. The method exploits a generalized frequency selective extrapolation approach…

Image and Video Processing · Electrical Eng. & Systems 2022-06-27 Christian Herglotz , Nils Genser , André Kaup

Low-precision deep neural network (DNN) training has gained tremendous attention as reducing precision is one of the most effective knobs for boosting DNNs' training time/energy efficiency. In this paper, we attempt to explore low-precision…

Machine Learning · Computer Science 2025-01-07 Yonggan Fu , Han Guo , Meng Li , Xin Yang , Yining Ding , Vikas Chandra , Yingyan Celine Lin

This paper compares the performance of a NN taking the output of a DCT (Discrete Cosine Transform) of an image patch with leNet for classifying MNIST hand written digits. The basis functions underlying the DCT bear a passing resemblance to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-07 David Sinclair

In this article, we aim to detect the double compression of MPEG-4, a universal video codec that is built into surveillance systems and shooting devices. Double compression is accompanied by various types of video manipulation, and its…

Multimedia · Computer Science 2022-04-18 Seung-Hun Nam , Wonhyuk Ahn , Myung-Joon Kwon , Jihyeon Kang , In-Jae Yu

Face Recognition using Discrete Cosine Transform (DCT) for Local and Global Features involves recognizing the corresponding face image from the database. The face image obtained from the user is cropped such that only the frontal face image…

Computer Vision and Pattern Recognition · Computer Science 2020-09-02 Aman R. Chadha , Pallavi P. Vaidya , M. Mani Roja

The emerging Learned Compression (LC) replaces the traditional codec modules with Deep Neural Networks (DNN), which are trained end-to-end for rate-distortion performance. This approach is considered as the future of image/video…

Image and Video Processing · Electrical Eng. & Systems 2024-07-08 Farhad Pakdaman , Moncef Gabbouj

Low Dose Computed Tomography (LDCT) is widely used as an imaging solution to aid diagnosis and other clinical tasks. However, this comes at the price of a deterioration in image quality due to the low dose of radiation used to reduce the…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Taifour Yousra Nabila , Azeddine Beghdadi , Marie Luong , Zuheng Ming , Habib Zaidi , Faouzi Alaya Cheikh

The large volume of electroencephalograph (EEG) data produced by brain-computer interface (BCI) systems presents challenges for rapid transmission over bandwidth-limited channels in Internet of Things (IoT) networks. To address the issue,…

Signal Processing · Electrical Eng. & Systems 2025-03-14 Xin Zhu , Hongyi Pan , Ahmet Enis Cetin

In this work, we present DCC(Deeper-yet-Compatible Compression), one enabling technique for real-time drone-sourced edge-assisted video analytics built on top of the existing codec. DCC tackles an important technical problem to compress…

Networking and Internet Architecture · Computer Science 2021-11-12 Junpeng Guo , Chunyi Peng

Most neural compression models are trained on large datasets of images or videos in order to generalize to unseen data. Such generalization typically requires large and expressive architectures with a high decoding complexity. Here we…

Image and Video Processing · Electrical Eng. & Systems 2023-12-06 Hyunjik Kim , Matthias Bauer , Lucas Theis , Jonathan Richard Schwarz , Emilien Dupont

Voxel representation and processing is an important issue in a broad spectrum of applications. E.g., 3D imaging in biomedical engineering applications, video game development and volumetric displays are often based on data representation by…

Signal Processing · Electrical Eng. & Systems 2018-11-13 Bastian Seifert , Knut Hüper , Christian Uhl

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…

Image and Video Processing · Electrical Eng. & Systems 2024-06-25 Ming-Che Li , Archisman Ghosh , Shreyas Sen

The distance transform (DT) and its many variations are ubiquitous tools for image processing and analysis. In many imaging scenarios, the images of interest are corrupted by noise. This has a strong negative impact on the accuracy of the…

Computer Vision and Pattern Recognition · Computer Science 2020-09-14 Johan Öfverstedt , Joakim Lindblad , Nataša Sladoje

Point tracking aims to localize corresponding points across video frames, serving as a fundamental task for 4D reconstruction, robotics, and video editing. Existing methods commonly rely on shallow convolutional backbones such as ResNet…

Computer Vision and Pattern Recognition · Computer Science 2025-12-24 Soowon Son , Honggyu An , Chaehyun Kim , Hyunah Ko , Jisu Nam , Dahyun Chung , Siyoon Jin , Jung Yi , Jaewon Min , Junhwa Hur , Seungryong Kim

Digital images are becoming large in size containing more information day by day to represent the as is state of the original one due to the availability of high resolution digital cameras, smartphones, and medical tests images. Therefore,…

Multimedia · Computer Science 2019-12-24 Ahmad Shawahna , Md. Enamul Haque , Alaaeldin Amin

Current region feature-based image captioning methods have progressed rapidly and achieved remarkable performance. However, they are still prone to generating irrelevant descriptions due to the lack of contextual information and the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Jun Wan , Jun Liu , Zhihui lai , Jie Zhou