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Modern compression systems use linear transformations in their encoding and decoding processes, with transforms providing compact signal representations. While multiple data-dependent transforms for image/video coding can adapt to diverse…

图像与视频处理 · 电气工程与系统科学 2024-11-26 Alessandro Gnutti , Fabrizio Guerrini , Riccardo Leonardi , Antonio Ortega

This paper presents FastFit, a novel neural vocoder architecture that replaces the U-Net encoder with multiple short-time Fourier transforms (STFTs) to achieve faster generation rates without sacrificing sample quality. We replaced each…

音频与语音处理 · 电气工程与系统科学 2023-05-19 Won Jang , Dan Lim , Heayoung Park

Most change detection models based on vision transformers currently follow a "pretraining then fine-tuning" strategy. This involves initializing the model weights using large scale classification datasets, which can be either natural images…

计算机视觉与模式识别 · 计算机科学 2023-12-11 Yang Zhao , Yuxiang Zhang , Yanni Dong , Bo Du

Vision transformers have been successfully applied to image recognition tasks due to their ability to capture long-range dependencies within an image. However, there are still gaps in both performance and computational cost between…

计算机视觉与模式识别 · 计算机科学 2022-06-15 Jianyuan Guo , Kai Han , Han Wu , Yehui Tang , Xinghao Chen , Yunhe Wang , Chang Xu

The dot product self-attention (DPSA) is a fundamental component of transformers. However, scaling them to long sequences, like documents or high-resolution images, becomes prohibitively expensive due to quadratic time and memory…

计算机视觉与模式识别 · 计算机科学 2024-01-09 Pourya Shamsolmoali , Masoumeh Zareapoor , Eric Granger , Michael Felsberg

Image inpainting plays a vital role in restoring missing image regions and supporting high-level vision tasks, but traditional methods struggle with complex textures and large occlusions. Although Transformer-based approaches have…

计算机视觉与模式识别 · 计算机科学 2025-06-24 Sijin He , Guangfeng Lin , Tao Li , Yajun Chen

We introduce optical Flow transFormer, dubbed as FlowFormer, a transformer-based neural network architecture for learning optical flow. FlowFormer tokenizes the 4D cost volume built from an image pair, encodes the cost tokens into a cost…

计算机视觉与模式识别 · 计算机科学 2022-09-22 Zhaoyang Huang , Xiaoyu Shi , Chao Zhang , Qiang Wang , Ka Chun Cheung , Hongwei Qin , Jifeng Dai , Hongsheng Li

Referring image segmentation is a fundamental vision-language task that aims to segment out an object referred to by a natural language expression from an image. One of the key challenges behind this task is leveraging the referring…

计算机视觉与模式识别 · 计算机科学 2022-04-07 Zhao Yang , Jiaqi Wang , Yansong Tang , Kai Chen , Hengshuang Zhao , Philip H. S. Torr

In this note we examine the autoregressive generalization of the FNet algorithm, in which self-attention layers from the standard Transformer architecture are substituted with a trivial sparse-uniformsampling procedure based on Fourier…

计算与语言 · 计算机科学 2021-07-26 Tim Lou , Michael Park , Mohammad Ramezanali , Vincent Tang

Image Captioning is a traditional vision-and-language task that aims to generate the language description of an image. Recent studies focus on scaling up the model size and the number of training data, which significantly increase the cost…

计算与语言 · 计算机科学 2023-03-14 Ziyang Luo , Zhipeng Hu , Yadong Xi , Rongsheng Zhang , Jing Ma

Objective: Transformers, born to remedy the inadequate receptive fields of CNNs, have drawn explosive attention recently. However, the daunting computational complexity of global representation learning, together with rigid window…

计算机视觉与模式识别 · 计算机科学 2023-04-20 Xian Lin , Li Yu , Kwang-Ting Cheng , Zengqiang Yan

This study aims to explore efficient tuning methods for the screenshot captioning task. Recently, image captioning has seen significant advancements, but research in captioning tasks for mobile screens remains relatively scarce. Current…

机器学习 · 计算机科学 2023-09-27 Ching-Yu Chiang , I-Hua Chang , Shih-Wei Liao

Many interesting and fundamentally practical optimization problems, ranging from optics, to signal processing, to radar and acoustics, involve constraints on the Fourier transform of a function. It is well-known that the {\em fast Fourier…

最优化与控制 · 数学 2012-09-05 Robert J. Vanderbei

The technologically-relevant task of feature extraction from data performed in deep-learning systems is routinely accomplished as repeated fast Fourier transforms (FFT) electronically in prevalent domain-specific architectures such as in…

光学 · 物理学 2020-03-25 Moustafa Ahmed , Yas Al-Hadeethi , Ahmed Bakry , Hamed Dalir , Volker J. Sorger

The quadratic complexity of standard self-attention severely limits the application of Transformer-based models to long-context tasks. While efficient Transformer variants exist, they often require architectural changes and costly…

计算与语言 · 计算机科学 2025-11-14 Jiangshu Du , Wenpeng Yin , Philip Yu

The Discrete Fourier Transform (DFT) is essential for various applications ranging from signal processing to convolution and polynomial multiplication. The groundbreaking Fast Fourier Transform (FFT) algorithm reduces DFT time complexity…

硬件体系结构 · 计算机科学 2023-04-06 Orian Leitersdorf , Yahav Boneh , Gonen Gazit , Ronny Ronen , Shahar Kvatinsky

Transformer model architectures have garnered immense interest lately due to their effectiveness across a range of domains like language, vision and reinforcement learning. In the field of natural language processing for example,…

机器学习 · 计算机科学 2022-03-15 Yi Tay , Mostafa Dehghani , Dara Bahri , Donald Metzler

The problem of language grounding has attracted much attention in recent years due to its pivotal role in more general image-lingual high level reasoning tasks (e.g., image captioning, VQA). Despite the tremendous progress in visual…

计算机视觉与模式识别 · 计算机科学 2019-12-03 Zicong Fan , Si Yi Meng , Leonid Sigal , James J. Little

Unsupervised image registration commonly adopts U-Net style networks to predict dense displacement fields in the full-resolution spatial domain. For high-resolution volumetric image data, this process is however resource-intensive and…

计算机视觉与模式识别 · 计算机科学 2023-07-07 Xi Jia , Joseph Bartlett , Wei Chen , Siyang Song , Tianyang Zhang , Xinxing Cheng , Wenqi Lu , Zhaowen Qiu , Jinming Duan

Light field cameras provide intriguing possibilities, such as post-capture refocus or the ability to synthesize images from novel viewpoints. This comes, however, at the price of significant storage requirements. Compression techniques can…

图形学 · 计算机科学 2019-10-14 Christian Lessig