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With the rapid increase in the size of neural networks, model compression has become an important area of research. Quantization is an effective technique at decreasing the model size, memory access, and compute load of large models.…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-26 David Qiu , David Rim , Shaojin Ding , Oleg Rybakov , Yanzhang He

Diffusion models have gained significant popularity in image generation tasks. However, generating high-quality content remains notably slow because it requires running model inference over many time steps. To accelerate these models, we…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 Zichen Fan , Steve Dai , Rangharajan Venkatesan , Dennis Sylvester , Brucek Khailany

In computer vision, Single Image Super-Resolution (SISR) is still a difficult problem. We present ViT-SR, a new technique to improve the performance of a Vision Transformer (ViT) employing a two-stage training strategy. In our method, the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Aditya Chaudhary , Prachet Dev Singh , Ankit Jha

Diffusion models are emerging models that generate images by iteratively denoising random Gaussian noise using deep neural networks. These models typically exhibit high computational and memory demands, necessitating effective post-training…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Cheng Chen , Christina Giannoula , Andreas Moshovos

Current diffusion-based super-resolution (SR) approaches achieve commendable performance at the cost of high inference overhead. Therefore, distillation techniques are utilized to accelerate the multi-step teacher model into one-step…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Weiyi You , Mingyang Zhang , Leheng Zhang , Xingyu Zhou , Kexuan Shi , Shuhang Gu

Text-to-image generation via Stable Diffusion models (SDM) have demonstrated remarkable capabilities. However, their computational intensity, particularly in the iterative denoising process, hinders real-time deployment in latency-sensitive…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Shuaiting Li , Juncan Deng , Zeyu Wang , Kedong Xu , Rongtao Deng , Hong Gu , Haibin Shen , Kejie Huang

Text-to-image diffusion models have emerged as a powerful framework for high-quality image generation given textual prompts. Their success has driven the rapid development of production-grade diffusion models that consistently increase in…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Vage Egiazarian , Denis Kuznedelev , Anton Voronov , Ruslan Svirschevski , Michael Goin , Daniil Pavlov , Dan Alistarh , Dmitry Baranchuk

Real-world image super-resolution (Real-ISR) focuses on recovering high-quality images from low-resolution inputs that suffer from complex degradations like noise, blur, and compression. Recently, diffusion models (DMs) have shown great…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Linwei Dong , Qingnan Fan , Yuhang Yu , Qi Zhang , Jinwei Chen , Yawei Luo , Changqing Zou

Portrait pictures, which typically feature both human subjects and natural backgrounds, are one of the most prevalent forms of photography on social media. Existing image super-resolution (ISR) techniques generally focus either on generic…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Renjie Li , Zihao Zhu , Xiaoyu Wang , Zhengzhong Tu

Although large scale models achieve significant improvements in performance, the overfitting challenge still frequently undermines their generalization ability. In super resolution tasks on images, diffusion models as representatives of…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Zhipeng Weng , Xiaopeng Liu , Ce Liu , Xingyuan Guo , Yukai Shi , Liang Lin

A diffusion model, which is formulated to produce an image using thousands of denoising steps, usually suffers from a slow inference speed. Existing acceleration algorithms simplify the sampling by skipping most steps yet exhibit…

Computer Vision and Pattern Recognition · Computer Science 2025-10-02 Mengfei Xia , Yujun Shen , Changsong Lei , Yu Zhou , Ran Yi , Deli Zhao , Wenping Wang , Yong-Jin Liu

Quantizing a floating-point neural network to its fixed-point representation is crucial for Learned Image Compression (LIC) because it improves decoding consistency for interoperability and reduces space-time complexity for implementation.…

Image and Video Processing · Electrical Eng. & Systems 2023-10-10 Junqi Shi , Ming Lu , Zhan Ma

This paper proposes a training method having multiple cyclic training for achieving enhanced performance in low-bit quantized convolutional neural networks (CNNs). Quantization is a popular method for obtaining lightweight CNNs, where the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 HyunJin Kim , Jungwoo Shin , Alberto A. Del Barrio

Recent advances in diffusion-based video restoration (VR) demonstrate significant improvement in visual quality, yet yield a prohibitive computational cost during inference. While several distillation-based approaches have exhibited the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Jianyi Wang , Shanchuan Lin , Zhijie Lin , Yuxi Ren , Meng Wei , Zongsheng Yue , Shangchen Zhou , Hao Chen , Yang Zhao , Ceyuan Yang , Xuefeng Xiao , Chen Change Loy , Lu Jiang

This paper introduces Distribution-Flexible Subset Quantization (DFSQ), a post-training quantization method for super-resolution networks. Our motivation for developing DFSQ is based on the distinctive activation distributions of current…

Computer Vision and Pattern Recognition · Computer Science 2023-05-15 Yunshan Zhong , Mingbao Lin , Jingjing Xie , Yuxin Zhang , Fei Chao , Rongrong Ji

Quantization is an effective way to reduce the memory cost of large-scale model training. However, most existing methods adopt fixed-precision policies, which ignore the fact that optimizer-state distributions vary significantly across…

Machine Learning · Computer Science 2026-04-10 Minglu Liu , Cunchen Hu , Liangliang Xu , Fengming Tang , Ruijia Wang , Fu Yu

Quantizing neural networks to low-bitwidth is important for model deployment on resource-limited edge hardware. Although a quantized network has a smaller model size and memory footprint, it is fragile to adversarial attacks. However, few…

Machine Learning · Computer Science 2022-10-18 Chaofan Tao , Ngai Wong

Objective: Quantitative technique based on In-line phase-contrast computed tomography with single scanning attracts more attention in application due to the flexibility of the implementation. However, the quantitative results usually suffer…

Medical Physics · Physics 2022-06-13 Suyu Liao , Shiwo Deng , Yining Zhu , Huitao Zhang , Peiping Zhu , Kai Zhang , Xing Zhao

Low-bit quantization is challenging to maintain high performance with limited model capacity (e.g., 4-bit for both weights and activations). Naturally, the distribution of both weights and activations in deep neural network are…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Haibao Yu , Tuopu Wen , Guangliang Cheng , Jiankai Sun , Qi Han , Jianping Shi

Rate-Distortion Optimized Quantization (RDOQ) has played an important role in the coding performance of recent video compression standards such as H.264/AVC, H.265/HEVC, VP9 and AV1. This scheme yields significant reductions in bit-rate at…

Machine Learning · Computer Science 2020-12-14 Dana Kianfar , Auke Wiggers , Amir Said , Reza Pourreza , Taco Cohen