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Learning a robust video Variational Autoencoder (VAE) is essential for reducing video redundancy and facilitating efficient video generation. Directly applying image VAEs to individual frames in isolation can result in temporal…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Yazhou Xing , Yang Fei , Yingqing He , Jingye Chen , Jiaxin Xie , Xiaowei Chi , Qifeng Chen

Combining the visual modality with pretrained language models has been surprisingly effective for simple descriptive tasks such as image captioning. More general text generation however remains elusive. We take a step back and ask: How do…

计算与语言 · 计算机科学 2022-10-25 Shruti Palaskar , Akshita Bhagia , Yonatan Bisk , Florian Metze , Alan W Black , Ana Marasović

Recent work in synthetic data generation in the time-series domain has focused on the use of Generative Adversarial Networks. We propose a novel architecture for synthetically generating time-series data with the use of Variational…

机器学习 · 计算机科学 2021-12-08 Abhyuday Desai , Cynthia Freeman , Zuhui Wang , Ian Beaver

Vector-Quantized Variational Autoencoders (VQ-VAE)[1] provide an unsupervised model for learning discrete representations by combining vector quantization and autoencoders. In this paper, we study the use of VQ-VAE for representation…

图像与视频处理 · 电气工程与系统科学 2019-03-05 Hanwei Wu , Markus Flierl

Despite recent successes in synthesizing faces and bedrooms, existing generative models struggle to capture more complex image types, potentially due to the oversimplification of their latent space constructions. To tackle this issue,…

机器学习 · 计算机科学 2018-03-13 Wenling Shang , Kihyuk Sohn , Yuandong Tian

The integration of Vector Quantised Variational AutoEncoder (VQ-VAE) with autoregressive models as generation part has yielded high-quality results on image generation. However, the autoregressive models will strictly follow the progressive…

计算机视觉与模式识别 · 计算机科学 2024-03-01 Minghui Hu , Yujie Wang , Tat-Jen Cham , Jianfei Yang , P. N. Suganthan

Existing autoregressive models follow the two-stage generation paradigm that first learns a codebook in the latent space for image reconstruction and then completes the image generation autoregressively based on the learned codebook.…

计算机视觉与模式识别 · 计算机科学 2023-05-24 Mengqi Huang , Zhendong Mao , Quan Wang , Yongdong Zhang

Image synthesis under multi-modal priors is a useful and challenging task that has received increasing attention in recent years. A major challenge in using generative models to accomplish this task is the lack of paired data containing all…

计算机视觉与模式识别 · 计算机科学 2022-06-13 Nithin Gopalakrishnan Nair , Wele Gedara Chaminda Bandara , Vishal M Patel

State-of-the-art high-spectral-efficiency communication systems employ high-order modulation formats coupled with high symbol rates to accommodate the ever-growing demand for data rate-hungry applications. However, such systems are more…

In this paper we explore the effect of architectural choices on learning a Variational Autoencoder (VAE) for text generation. In contrast to the previously introduced VAE model for text where both the encoder and decoder are RNNs, we…

计算与语言 · 计算机科学 2017-02-09 Stanislau Semeniuta , Aliaksei Severyn , Erhardt Barth

Recently, an audio-visual speech generative model based on variational autoencoder (VAE) has been proposed, which is combined with a nonnegative matrix factorization (NMF) model for noise variance to perform unsupervised speech enhancement.…

音频与语音处理 · 电气工程与系统科学 2019-11-12 Mostafa Sadeghi , Xavier Alameda-Pineda

Variational Convertor-Encoder (VCE) converts an image to various styles; we present this novel architecture for the problem of one-shot generalization and its transfer to new tasks not seen before without additional training. We also…

计算机视觉与模式识别 · 计算机科学 2020-11-13 Chengshuai Li , Shuai Han , Jianping Xing

Deep generative models are commonly used for generating images and text. Interpretability of these models is one important pursuit, other than the generation quality. Variational auto-encoder (VAE) with Gaussian distribution as prior has…

机器学习 · 计算机科学 2020-08-24 Wenxian Shi , Hao Zhou , Ning Miao , Lei Li

In this paper, we propose \textbf{UniCode}, a novel approach within the domain of multimodal large language models (MLLMs) that learns a unified codebook to efficiently tokenize visual, text, and potentially other types of signals. This…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Sipeng Zheng , Bohan Zhou , Yicheng Feng , Ye Wang , Zongqing Lu

There has been exciting progress in generating images from natural language or layout conditions. However, these methods struggle to faithfully reproduce complex scenes due to the insufficient modeling of multiple objects and their…

计算机视觉与模式识别 · 计算机科学 2024-10-02 Yunnan Wang , Ziqiang Li , Zequn Zhang , Wenyao Zhang , Baao Xie , Xihui Liu , Wenjun Zeng , Xin Jin

Image generative models can learn the distributions of the training data and consequently generate examples by sampling from these distributions. However, when the training dataset is corrupted with outliers, generative models will likely…

机器学习 · 计算机科学 2022-09-21 Chieh-Hsin Lai , Dongmian Zou , Gilad Lerman

Vector quantization (VQ) transforms continuous image features into discrete representations, providing compressed, tokenized inputs for generative models. However, VQ-based frameworks suffer from several issues, such as non-smooth latent…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Sicheng Yang , Xing Hu , Qiang Wu , Dawei Yang

Large pre-trained multimodal models have demonstrated significant success in a range of downstream tasks, including image captioning, image-text retrieval, visual question answering (VQA), etc. However, many of these methods rely on…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Zikang Liu , Sihan Chen , Longteng Guo , Handong Li , Xingjian He , Jing Liu

Conditional discrete generative models struggle to faithfully compose multiple input conditions. To address this, we derive a theoretically-grounded formulation for composing discrete probabilistic generative processes, with masked…

机器学习 · 计算机科学 2026-04-08 Jamie Stirling , Noura Al-Moubayed , Chris G. Willcocks , Hubert P. H. Shum

Conditional discrete generative models struggle to faithfully compose multiple input conditions. To address this, we derive a theoretically-grounded formulation for composing discrete probabilistic generative processes, with masked…

计算机视觉与模式识别 · 计算机科学 2026-04-08 Jamie Stirling , Noura Al-Moubayed , Chris G. Willcocks , Hubert P. H. Shum