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The generation of high-quality, diverse, and prompt-aligned images is a central goal in image-generating diffusion models. The popular classifier-free guidance (CFG) approach improves quality and alignment at the cost of reduced variation,…

机器学习 · 计算机科学 2025-10-21 Enhao Gu , Haolin Hou

Training deep generative models usually requires a large amount of data. To alleviate the data collection cost, the task of zero-shot GAN adaptation aims to reuse well-trained generators to synthesize images of an unseen target domain…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Seogkyu Jeon , Bei Liu , Pilhyeon Lee , Kibeom Hong , Jianlong Fu , Hyeran Byun

The primary axes of interest in image-generating diffusion models are image quality, the amount of variation in the results, and how well the results align with a given condition, e.g., a class label or a text prompt. The popular…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Tero Karras , Miika Aittala , Tuomas Kynkäänniemi , Jaakko Lehtinen , Timo Aila , Samuli Laine

Training-free guided sampling in diffusion models leverages off-the-shelf pre-trained networks, such as an aesthetic evaluation model, to guide the generation process. Current training-free guided sampling algorithms obtain the guidance…

计算机视觉与模式识别 · 计算机科学 2023-12-20 Jiachun Pan , Hanshu Yan , Jun Hao Liew , Jiashi Feng , Vincent Y. F. Tan

Classifier-Free Guidance (CFG) serves as the de facto control mechanism for conditional diffusion, yet high guidance scales notoriously induce oversaturation, texture artifacts, and structural collapse. We attribute this failure to a…

计算机视觉与模式识别 · 计算机科学 2026-03-13 Zexi Jia , Pengcheng Luo , Zhengyao Fang , Jinchao Zhang , Jie Zhou

Classifier-free guidance (CFG) has become the standard method for enhancing the quality of conditional diffusion models. However, employing CFG requires either training an unconditional model alongside the main diffusion model or modifying…

机器学习 · 计算机科学 2025-06-04 Seyedmorteza Sadat , Manuel Kansy , Otmar Hilliges , Romann M. Weber

Existing vector quantization (VQ) based autoregressive models follow a two-stage generation paradigm that first learns a codebook to encode images as discrete codes, and then completes generation based on the learned codebook. However, they…

计算机视觉与模式识别 · 计算机科学 2023-05-22 Mengqi Huang , Zhendong Mao , Zhuowei Chen , Yongdong Zhang

Visual Autoregressive (VAR) models have emerged as a powerful paradigm for image synthesis by performing hierarchical next-scale prediction. However, VAR models are inherently prone to cascading error propagation, where subtle coarse-scale…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Ligong Bi , Tao Huang , Jianyuan Guo , Chang Xu

Deep generative models provide powerful tools for distributions over complicated manifolds, such as those of natural images. But many of these methods, including generative adversarial networks (GANs), can be difficult to train, in part…

机器学习 · 统计学 2017-11-08 Akash Srivastava , Lazar Valkov , Chris Russell , Michael U. Gutmann , Charles Sutton

Flow matching has demonstrated strong generative capabilities and has become a core component in modern Text-to-Speech (TTS) systems. To ensure high-quality speech synthesis, Classifier-Free Guidance (CFG) is widely used during the…

音频与语音处理 · 电气工程与系统科学 2025-05-05 Yuzhe Liang , Wenzhe Liu , Chunyu Qiang , Zhikang Niu , Yushen Chen , Ziyang Ma , Wenxi Chen , Nan Li , Chen Zhang , Xie Chen

Generative models make huge progress to the photorealistic image synthesis in recent years. To enable human to steer the image generation process and customize the output, many works explore the interpretable dimensions of the latent space…

计算机视觉与模式识别 · 计算机科学 2024-01-11 Jianyuan Wang , Lalit Bhagat , Ceyuan Yang , Yinghao Xu , Yujun Shen , Hongdong Li , Bolei Zhou

Recent feed-forward reconstruction models, such as VGGT, have proven competitive with traditional optimization-based reconstructors while also providing geometry-aware features useful for other tasks. Here, we show that the quality of these…

While Multimodal Large Language Models (MLLMs) excel at general vision-language tasks, precise coordinate prediction remains a significant challenge, particularly as high-resolution inputs cause visual positional encodings (VPEs) to…

计算机视觉与模式识别 · 计算机科学 2026-04-29 Xingjian Tao , Yiwei Wang , Yujun Cai , Yihong Luo , Kai Han , Jing Tang

Concept activation vector (CAV) has attracted broad research interest in explainable AI, by elegantly attributing model predictions to specific concepts. However, the training of CAV often necessitates a large number of high-quality images,…

计算机视觉与模式识别 · 计算机科学 2024-10-15 Qihan Huang , Jie Song , Mengqi Xue , Haofei Zhang , Bingde Hu , Huiqiong Wang , Hao Jiang , Xingen Wang , Mingli Song

Recent progress in diffusion-based visual generation has largely relied on latent diffusion models with variational autoencoders (VAEs). While effective for high-fidelity synthesis, this VAE+diffusion paradigm suffers from limited training…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Minglei Shi , Haolin Wang , Wenzhao Zheng , Ziyang Yuan , Xiaoshi Wu , Xintao Wang , Pengfei Wan , Jie Zhou , Jiwen Lu

Video stabilization is pivotal for video processing, as it removes unwanted shakiness while preserving the original user motion intent. Existing approaches, depending on the domain they operate, suffer from several issues (e.g. geometric…

图形学 · 计算机科学 2025-07-21 Zinuo You , Stamatios Georgoulis , Anpei Chen , Siyu Tang , Dengxin Dai

SVG (Scalable Vector Graphics) is a widely used graphics format that possesses excellent scalability and editability. Image vectorization, which aims to convert raster images to SVGs, is an important yet challenging problem in computer…

计算机视觉与模式识别 · 计算机科学 2024-06-17 Teng Hu , Ran Yi , Baihong Qian , Jiangning Zhang , Paul L. Rosin , Yu-Kun Lai

The development of generalizable Novel View Synthesis (NVS) models is critically limited by the scarcity of large-scale training data featuring diverse and precise camera trajectories. While real-world captures are photorealistic, they are…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Chenhan Jiang , Yu Chen , Qingwen Zhang , Jifei Song , Songcen Xu , Dit-Yan Yeung , Jiankang Deng

Text-to-image diffusion models are capable of generating high-quality images, but suboptimal pre-trained text representations often result in these images failing to align closely with the given text prompts. Classifier-free guidance (CFG)…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Zhenyu Zhou , Defang Chen , Can Wang , Chun Chen , Siwei Lyu

Automatic image editing has great demands because of its numerous applications, and the use of natural language instructions is essential to achieving flexible and intuitive editing as the user imagines. A pioneering work in text-driven…

计算机视觉与模式识别 · 计算机科学 2023-04-04 Tsuyoshi Baba , Kosuke Nishida , Kyosuke Nishida