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Recently, a variety of acoustic tasks and related applications arised. For many acoustic tasks, the labeled data size may be limited. To handle this problem, we propose an unsupervised pre-training method using Transformer based encoder to…

音频与语音处理 · 电气工程与系统科学 2021-02-09 Ruixiong Zhang , Haiwei Wu , Wubo Li , Dongwei Jiang , Wei Zou , Xiangang Li

Recent work (Bengio et al., 2013) has shown howDenoising Auto-Encoders(DAE) become gener-ative models as a density estimator. However,in practice, the framework suffers from a mixingproblem in the MCMC sampling process and nodirect method…

机器学习 · 计算机科学 2017-01-31 Dong-Hyun Lee

Blind image quality assessment (BIQA) is a challenging problem with important real-world applications. Recent efforts attempting to exploit powerful representations by deep neural networks (DNN) are hindered by the lack of subjectively…

计算机视觉与模式识别 · 计算机科学 2023-05-25 Zehong Zhou , Fei Zhou , Guoping Qiu

Facial feature tracking is essential in imaging ballistocardiography for accurate heart rate estimation and enables motor degradation quantification in Parkinson's disease through skin feature tracking. While deep convolutional neural…

计算机视觉与模式识别 · 计算机科学 2024-05-09 Jose Chang , Torbjörn E. M. Nordling

The term blind denoising refers to the fact that the basis used for denoising is learnt from the noisy sample itself during denoising. Dictionary learning and transform learning based formulations for blind denoising are well known. But…

信号处理 · 电气工程与系统科学 2019-12-17 Angshul Majumdar

Pulmonary nodule detection plays an important role in lung cancer screening with low-dose computed tomography (CT) scans. It remains challenging to build nodule detection deep learning models with good generalization performance due to…

计算机视觉与模式识别 · 计算机科学 2020-02-10 Yuemeng Li , Yong Fan

Passive radio frequency (RF) sensing and monitoring of human daily activities in elderly care homes is an emerging topic. Micro-Doppler radars are an appealing solution considering their non-intrusiveness, deep penetration, and…

机器学习 · 计算机科学 2021-11-04 Yordanka Karayaneva , Sara Sharifzadeh , Wenda Li , Yanguo Jing , Bo Tan

Query-by-example spoken term detection (QbE-STD) is typically constrained by transcribed data scarcity and language specificity. This paper introduces a novel, language-agnostic QbE-STD model leveraging image processing techniques and…

机器学习 · 计算机科学 2024-10-08 Allahdadi Fatemeh , Mahdian Toroghi Rahil , Zareian Hassan

Anomaly detection in tabular data remains challenging due to complex feature interactions and the scarcity of anomalous examples. Denoising autoencoders rely on fixed-magnitude noise, limiting adaptability to diverse data distributions.…

机器学习 · 计算机科学 2025-08-04 Timur Sattarov , Marco Schreyer , Damian Borth

For our submission to the ZeroSpeech 2019 challenge, we apply discrete latent-variable neural networks to unlabelled speech and use the discovered units for speech synthesis. Unsupervised discrete subword modelling could be useful for…

We propose a deformable registration algorithm based on unsupervised learning of a low-dimensional probabilistic parameterization of deformations. We model registration in a probabilistic and generative fashion, by applying a conditional…

计算机视觉与模式识别 · 计算机科学 2018-07-23 Julian Krebs , Tommaso Mansi , Boris Mailhé , Nicholas Ayache , Hervé Delingette

The success of speech-image retrieval relies on establishing an effective alignment between speech and image. Existing methods often model cross-modal interaction through simple cosine similarity of the global feature of each modality,…

计算与语言 · 计算机科学 2024-09-12 Lifeng Zhou , Yuke Li , Rui Deng , Yuting Yang , Haoqi Zhu

Sparse autoencoders (SAEs) are a technique for sparse decomposition of neural network activations into human-interpretable features. However, current SAEs suffer from feature absorption, where specialized features capture instances of…

机器学习 · 计算机科学 2025-09-29 Anton Korznikov , Andrey Galichin , Alexey Dontsov , Oleg Rogov , Elena Tutubalina , Ivan Oseledets

The widespread use of diffusion methods enables the creation of highly realistic images on demand, thereby posing significant risks to the integrity and safety of online information and highlighting the necessity of DeepFake detection. Our…

计算机视觉与模式识别 · 计算机科学 2024-05-29 Di Yang , Yihao Huang , Qing Guo , Felix Juefei-Xu , Xiaojun Jia , Run Wang , Geguang Pu , Yang Liu

We present a fully convolutional denoising autoencoder (FC-DAE) for denoising two-time intensity-intensity correlation functions ($C_2$) in X-ray photon correlation spectroscopy (XPCS). Unlike conventional denoising autoencoders that are…

机器学习 · 计算机科学 2026-05-29 Nisar Nellikunnummel , Andi Barbour , Lutz Wiegart , Tatiana Konstantinova , Anthony DeGennaro

Image dehazing is a crucial image pre-processing task aimed at removing the incoherent noise generated by haze to improve the visual appeal of the image. The existing models use sophisticated networks and custom loss functions which are…

计算机视觉与模式识别 · 计算机科学 2020-08-25 Pavan A , Adithya Bennur , Mohit Gaggar , Shylaja S S

Clipping, as a current nonlinear distortion, often occurs due to the limited dynamic range of audio recorders. It degrades the speech quality and intelligibility and adversely affects the performances of speech and speaker recognitions. In…

音频与语音处理 · 电气工程与系统科学 2019-10-29 Hamidreza Baradaran Kashani , Ata Jodeiri , Mohammad Mohsen Goodarzi , Shabnam Gholamdokht Firooz

Cryogenic electron tomography is a technique for imaging biological samples in 3D. A microscope collects a series of 2D projections of the sample, and the goal is to reconstruct the 3D density of the sample called the tomogram.…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Simon Wiedemann , Reinhard Heckel

Deep learning approaches in image processing predominantly resort to supervised learning. A majority of methods for image denoising are no exception to this rule and hence demand pairs of noisy and corresponding clean images. Only recently…

图像与视频处理 · 电气工程与系统科学 2020-10-02 Priyatham Kattakinda , A. N. Rajagopalan

In this work we propose a novel model-based deep convolutional autoencoder that addresses the highly challenging problem of reconstructing a 3D human face from a single in-the-wild color image. To this end, we combine a convolutional…

计算机视觉与模式识别 · 计算机科学 2017-12-11 Ayush Tewari , Michael Zollhöfer , Hyeongwoo Kim , Pablo Garrido , Florian Bernard , Patrick Pérez , Christian Theobalt