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We introduce a self-supervised vision representation model BEiT, which stands for Bidirectional Encoder representation from Image Transformers. Following BERT developed in the natural language processing area, we propose a masked image…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Hangbo Bao , Li Dong , Songhao Piao , Furu Wei

We propose a method for joint multichannel speech dereverberation with two spatial-aware tasks: direction-of-arrival (DOA) estimation and speech separation. The proposed method addresses involved tasks as a sequence to sequence mapping…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-23 Yang Jiao

Tremendous amounts of multimedia associated with speech information are driving an urgent need to develop efficient and effective automatic summarization methods. To this end, we have seen rapid progress in applying supervised deep neural…

Computation and Language · Computer Science 2020-06-03 Shi-Yan Weng , Tien-Hong Lo , Berlin Chen

Fine-grained classification remains a challenging task because distinguishing categories needs learning complex and local differences. Diversity in the pose, scale, and position of objects in an image makes the problem even more difficult.…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Mahdi Darvish , Mahsa Pouramini , Hamid Bahador

Attenuation correction (AC) is essential for the generation of artifact-free and quantitatively accurate positron emission tomography (PET) images. However, AC of PET faces challenges including inter-scan motion and erroneous transformation…

Image and Video Processing · Electrical Eng. & Systems 2023-10-04 Yu Guan , Bohui Shen , Xinchong Shi , Xiangsong Zhang , Bingxuan Li , Qiegen Liu

Magnetic Resonance (MR) Imaging and Computed Tomography (CT) are the primary diagnostic imaging modalities quite frequently used for surgical planning and analysis. A general problem with medical imaging is that the acquisition process is…

Image and Video Processing · Electrical Eng. & Systems 2020-06-08 Vismay Agrawal , Avinash Kori , Vikas Kumar Anand , Ganapathy Krishnamurthi

In this work we present a novel system for generation of virtual PET images using CT scans. We combine a fully convolutional network (FCN) with a conditional generative adversarial network (GAN) to generate simulated PET data from given…

Computer Vision and Pattern Recognition · Computer Science 2018-07-24 Avi Ben-Cohen , Eyal Klang , Stephen P. Raskin , Shelly Soffer , Simona Ben-Haim , Eli Konen , Michal Marianne Amitai , Hayit Greenspan

Recent years have witnessed a substantial increase in the use of deep learning to solve various natural language processing (NLP) problems. Early deep learning models were constrained by their sequential or unidirectional nature, such that…

Information Retrieval · Computer Science 2024-03-05 Jiajia Wang , Jimmy X. Huang , Xinhui Tu , Junmei Wang , Angela J. Huang , Md Tahmid Rahman Laskar , Amran Bhuiyan

Transformer, based on the encoder-decoder framework, has achieved state-of-the-art performance on several natural language generation tasks. The encoder maps the words in the input sentence into a sequence of hidden states, which are then…

Computation and Language · Computer Science 2020-02-25 Rongxiang Weng , Haoran Wei , Shujian Huang , Heng Yu , Lidong Bing , Weihua Luo , Jiajun Chen

Large high-quality medical image datasets are difficult to acquire but necessary for many deep learning applications. For positron emission tomography (PET), reconstructed image quality is limited by inherent Poisson noise. We propose a…

Over the past few decades, Artificial Intelligence(AI) has progressed from the initial machine learning stage to the deep learning stage, and now to the stage of foundational models. Foundational models have the characteristics of…

Computation and Language · Computer Science 2024-11-28 Lewen Yang , Xuanyu Zhou , Juao Fan , Xinyi Xie , Shengxin Zhu

Medical imaging datasets are inherently high dimensional with large variability and low sample sizes that limit the effectiveness of deep learning algorithms. Recently, generative adversarial networks (GANs) with the ability to synthesize…

Image and Video Processing · Electrical Eng. & Systems 2024-12-13 Apoorva Sikka , Skand Peri , Jitender Singh Virk , Usma Niyaz , Deepti R. Bathula

There has been a drastic growth of research in Generative Adversarial Nets (GANs) in the past few years. Proposed in 2014, GAN has been applied to various applications such as computer vision and natural language processing, and achieves…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 He Huang , Philip S. Yu , Changhu Wang

Potential radioactive hazards in full-dose positron emission tomography (PET) imaging remain a concern, whereas the quality of low-dose images is never desirable for clinical use. So it is of great interest to translate low-dose PET images…

Image and Video Processing · Electrical Eng. & Systems 2023-06-06 Yang Zhou , Zhiwen Yang , Hui Zhang , Eric I-Chao Chang , Yubo Fan , Yan Xu

Generated hateful and toxic content by a portion of users in social media is a rising phenomenon that motivated researchers to dedicate substantial efforts to the challenging direction of hateful content identification. We not only need an…

Social and Information Networks · Computer Science 2019-10-29 Marzieh Mozafari , Reza Farahbakhsh , Noel Crespi

Pre-training a transformer-based model for the language modeling task in a large dataset and then fine-tuning it for downstream tasks has been found very useful in recent years. One major advantage of such pre-trained language models is…

Computation and Language · Computer Science 2020-11-17 Md Tahmid Rahman Laskar , Enamul Hoque , Jimmy Xiangji Huang

In recent years, the use of deep learning is becoming increasingly popular in computer vision. However, the effective training of deep architectures usually relies on huge sets of annotated data. This is critical in the medical field where…

Image and Video Processing · Electrical Eng. & Systems 2019-07-30 Paolo Andreini , Simone Bonechi , Monica Bianchini , Alessandro Mecocci , Franco Scarselli , Andrea Sodi

Computed tomography (CT) is critical for various clinical applications, e.g., radiotherapy treatment planning and also PET attenuation correction. However, CT exposes radiation during acquisition, which may cause side effects to patients.…

Computer Vision and Pattern Recognition · Computer Science 2016-12-19 Dong Nie , Roger Trullo , Caroline Petitjean , Su Ruan , Dinggang Shen

Positron emission tomography (PET) is the most sensitive molecular imaging modality routinely applied in our modern healthcare. High radioactivity caused by the injected tracer dose is a major concern in PET imaging and limits its clinical…

Image and Video Processing · Electrical Eng. & Systems 2023-04-04 Yuxin Xue , Yige Peng , Lei Bi , Dagan Feng , Jinman Kim

Intent classification and slot filling are two essential tasks for natural language understanding. They often suffer from small-scale human-labeled training data, resulting in poor generalization capability, especially for rare words.…

Computation and Language · Computer Science 2019-03-01 Qian Chen , Zhu Zhuo , Wen Wang