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Perspective distortion (PD) leads to substantial alterations in the shape, size, orientation, angles, and spatial relationships of visual elements in images. Accurately determining camera intrinsic and extrinsic parameters is challenging,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Meenakshi Subhash Chippa , Prakash Chandra Chhipa , Kanjar De , Marcus Liwicki , Rajkumar Saini

As integrated circuit (IC) dimensions shrink below the lithographic wavelength, optical lithography faces growing challenges from diffraction and process variability. Model-based optical proximity correction (OPC) and inverse lithography…

Machine Learning · Computer Science 2025-12-25 Yuting Hu , Lei Zhuang , Hua Xiang , Jinjun Xiong , Gi-Joon Nam

The ever-growing deep learning technologies are making revolutionary changes for modern life. However, conventional computing architectures are designed to process sequential and digital programs, being extremely burdened with performing…

Emerging Technologies · Computer Science 2022-12-21 Yuyao Huang , Tingzhao Fu , Honghao Huang , Sigang Yang , Hongwei Chen

Optical implementations of neural networks (ONNs) herald the next-generation high-speed and energy-efficient deep learning computing by harnessing the technical advantages of large bandwidth and high parallelism of optics. However, due to…

Emerging Technologies · Computer Science 2021-12-16 Shaofu Xu , Jing Wang , Haowen Shu , Zhike Zhang , Sicheng Yi , Bowen Bai , Xingjun Wang , Jianguo Liu , Weiwen Zou

Nonsmooth composite optimization with orthogonality constraints has a wide range of applications in statistical learning and data science. However, this problem is challenging due to its nonsmooth objective and computationally expensive…

Optimization and Control · Mathematics 2026-05-15 Ganzhao Yuan

One-class classification (OCC) is a longstanding method for anomaly detection. With the powerful representation capability of the pre-trained backbone, OCC methods have witnessed significant performance improvements. Typically, most of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Han Gao , Huiyuan Luo , Fei Shen , Zhengtao Zhang

We explore the oscillatory behavior observed in inversion methods applied to large-scale text-to-image diffusion models, with a focus on the "Flux" model. By employing a fixed-point-inspired iterative approach to invert real-world images,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Yan Zheng , Zhenxiao Liang , Xiaoyan Cong , Lanqing guo , Yuehao Wang , Peihao Wang , Zhangyang Wang

State-of-the-art methods in generative representation learning yield semantic disentanglement, but typically do not consider physical scene parameters, such as geometry, albedo, lighting, or camera. We posit that inverse rendering, a way to…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Tzofi Klinghoffer , Kushagra Tiwary , Arkadiusz Balata , Vivek Sharma , Ramesh Raskar

In this paper we propose an iterative method to address the face identification problem with block occlusions. Our approach utilizes a robust representation based on two characteristics in order to model contiguous errors (e.g., block…

Computer Vision and Pattern Recognition · Computer Science 2017-11-15 Michael Iliadis , Haohong Wang , Rafael Molina , Aggelos K. Katsaggelos

Achieving both high-performance and wide field-of-view (FOV) super-resolution imaging has been attracting increasing attention in recent years. However, such goal suffers from long reconstruction time and huge storage space. Parallel…

Image and Video Processing · Electrical Eng. & Systems 2025-03-19 Xiao-Peng Jin , An-Dong Xiong , Wei Zhang , Xiao-Qing Wang , Fan Liu , Chang-Heng Li , Xu-Ri Yao , Xue-Feng Liu , Qing Zhao

Image forgery localization, which aims to segment tampered regions in an image, is a fundamental yet challenging digital forensic task. While some deep learning-based forensic methods have achieved impressive results, they directly learn…

Computer Vision and Pattern Recognition · Computer Science 2024-06-21 Zijie Lou , Gang Cao , Kun Guo , Haochen Zhu , Lifang Yu

Recent advances in meta-optics have enabled diverse functionalities in compact optical devices; however, conventional forward design approaches become inadequate as device complexity and scale grow. Inverse design offers a powerful…

Optical character recognition (OCR) is a widely used pattern recognition application in numerous domains. There are several feature-rich, general-purpose OCR solutions available for consumers, which can provide moderate to excellent…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Ayantha Randika , Nilanjan Ray , Xiao Xiao , Allegra Latimer

Indirect image registration is a promising technique to improve image reconstruction quality by providing a shape prior for the reconstruction task. In this paper, we propose a novel hybrid method that seeks to reconstruct high quality…

Image and Video Processing · Electrical Eng. & Systems 2019-12-18 Jiulong Liu , Angelica I. Aviles-Rivero , Hui Ji , Carola-Bibiane Schönlieb

Orthogonal convolutional layers are valuable components in multiple areas of machine learning, such as adversarial robustness, normalizing flows, GANs, and Lipschitz-constrained models. Their ability to preserve norms and ensure stable…

Artificial Intelligence · Computer Science 2025-06-05 Thibaut Boissin , Franck Mamalet , Thomas Fel , Agustin Martin Picard , Thomas Massena , Mathieu Serrurier

With the feature size continuously shrinking in advanced technology nodes, mask optimization is increasingly crucial in the conventional design flow, accompanied by an explosive growth in prohibitive computational overhead in optical…

Computer Vision and Pattern Recognition · Computer Science 2023-03-23 Guojin Chen , Ziyang Yu , Hongduo Liu , Yuzhe Ma , Bei Yu

Deep neural networks have achieved remarkable performance on a range of classification tasks, with softmax cross-entropy (CE) loss emerging as the de-facto objective function. The CE loss encourages features of a class to have a higher…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Kanchana Ranasinghe , Muzammal Naseer , Munawar Hayat , Salman Khan , Fahad Shahbaz Khan

We introduce a model-based image reconstruction framework with a convolution neural network (CNN) based regularization prior. The proposed formulation provides a systematic approach for deriving deep architectures for inverse problems with…

Computer Vision and Pattern Recognition · Computer Science 2019-06-06 Hemant Kumar Aggarwal , Merry P. Mani , Mathews Jacob

As a pioneering work, PointContrast conducts unsupervised 3D representation learning via leveraging contrastive learning over raw RGB-D frames and proves its effectiveness on various downstream tasks. However, the trend of large-scale…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao

We focus on a relatively unexplored learning paradigm known as {\em Online Unsupervised Continual Learning} (O-UCL), where an agent receives a non-stationary, unlabeled data stream and progressively learns to identify an increasing number…

Machine Learning · Computer Science 2024-09-26 Cameron Taylor , Vassilis Vassiliades , Constantine Dovrolis