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Working from a Poisson-Gaussian noise model, a multi-sample extension of the Photon Counting Histogram Expectation Maximization (PCH-EM) algorithm is derived as a general-purpose alternative to the Photon Transfer (PT) method. This…

Instrumentation and Detectors · Physics 2024-03-08 Aaron J. Hendrickson , David P. Haefner , Stanley H. Chan , Nicholas R. Shade , Eric R. Fossum

In learned image compression, probabilistic models play an essential role in characterizing the distribution of latent variables. The Gaussian model with mean and scale parameters has been widely used for its simplicity and effectiveness.…

Image and Video Processing · Electrical Eng. & Systems 2025-04-24 Haotian Zhang , Li Li , Dong Liu

We propose the first deep learning approach for exemplar-based local colorization. Given a reference color image, our convolutional neural network directly maps a grayscale image to an output colorized image. Rather than using hand-crafted…

Computer Vision and Pattern Recognition · Computer Science 2018-07-24 Mingming He , Dongdong Chen , Jing Liao , Pedro V. Sander , Lu Yuan

Gaussian Boson Sampling (GBS), which can be realized with a photonic quantum computing model, perform some special kind of sampling tasks. In [4], we introduced algorithms that use GBS samples to approximate Gaussian expectation problems.…

Quantum Physics · Physics 2025-02-28 Jørgen Ellegaard Andersen , Shan Shan

Contextual optimization enhances decision quality by leveraging side information to improve predictions of uncertain parameters. However, existing approaches face significant challenges when dealing with multimodal or mixtures of…

Optimization and Control · Mathematics 2025-09-19 YoungChul Yoon , Grani A. Hanasusanto , Yijie Wang

Transfer learning has become a popular method for leveraging pre-trained models in computer vision. However, without performing computationally expensive fine-tuning, it is difficult to quantify which pre-trained source models are suitable…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Michal Pándy , Andrea Agostinelli , Jasper Uijlings , Vittorio Ferrari , Thomas Mensink

This paper is concerned with an important issue in finite mixture modelling, the selection of the number of mixing components. We propose a new penalized likelihood method for model selection of finite multivariate Gaussian mixture models.…

Methodology · Statistics 2013-01-17 Tao Huang , Heng Peng , Kun Zhang

Universal style transfer aims to transfer arbitrary visual styles to content images. Existing feed-forward based methods, while enjoying the inference efficiency, are mainly limited by inability of generalizing to unseen styles or…

Computer Vision and Pattern Recognition · Computer Science 2017-11-20 Yijun Li , Chen Fang , Jimei Yang , Zhaowen Wang , Xin Lu , Ming-Hsuan Yang

We present a probabilistic model for natural images which is based on Gaussian scale mixtures and a simple multiscale representation. In contrast to the dominant approach to modeling whole images focusing on Markov random fields, we…

Machine Learning · Statistics 2012-09-17 Lucas Theis , Reshad Hosseini , Matthias Bethge

Unsupervised image-to-image translation (UNIT) aims at learning a mapping between several visual domains by using unpaired training images. Recent studies have shown remarkable success for multiple domains but they suffer from two main…

Computer Vision and Pattern Recognition · Computer Science 2020-03-24 Yahui Liu , Marco De Nadai , Jian Yao , Nicu Sebe , Bruno Lepri , Xavier Alameda-Pineda

A popular series of style transfer methods apply a style to a content image by controlling mean and covariance of values in early layers of a feature stack. This is insufficient for transferring styles that have strong structure across…

Computer Vision and Pattern Recognition · Computer Science 2018-01-09 Mao-Chuang Yeh , Shuai Tang

Image colorization aims to bring colors back to grayscale images. Automatic image colorization methods, which requires no additional guidance, struggle to generate high-quality images due to color ambiguity, and provides limited user…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Yifan Li , Shuai Yang , Jiaying Liu

Style transfer has attracted a lot of attentions, as it can change a given image into one with splendid artistic styles while preserving the image structure. However, conventional approaches easily lose image details and tend to produce…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Suhyeon Ha , Guisik Kim , Junseok Kwon

Image-to-image translation is a technique that focuses on transferring images from one domain to another while maintaining the essential content representations. In recent years, image-to-image translation has gained significant attention…

Image and Video Processing · Electrical Eng. & Systems 2024-04-02 Xixian Wu , Dian Chao , Yang Yang

In this paper, we outline the use of Mixture Models in density estimation of large astronomical databases. This method of density estimation has been known in Statistics for some time but has not been implemented because of the large…

Astrophysics · Physics 2007-05-23 A. J. Connolly , C. Genovese , A. W. Moore , R. C. Nichol , J. Schneider , L. Wasserman

Non-Gaussian and multimodal distributions are an important part of many recent robust sensor fusion algorithms. In difference to robust cost functions, they are probabilistically founded and have good convergence properties. Since their…

Robotics · Computer Science 2020-01-14 Tim Pfeifer , Peter Protzel

Style transfer aims to render the content of a given image in the graphical/artistic style of another image. The fundamental concept underlying NeuralStyle Transfer (NST) is to interpret style as a distribution in the feature space of a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-15 Nikolai Kalischek , Jan Dirk Wegner , Konrad Schindler

In this paper, we study convergence properties of the gradient Expectation-Maximization algorithm \cite{lange1995gradient} for Gaussian Mixture Models for general number of clusters and mixing coefficients. We derive the convergence rate…

Statistics Theory · Mathematics 2017-12-05 Bowei Yan , Mingzhang Yin , Purnamrita Sarkar

This paper presents the first end-to-end network for exemplar-based video colorization. The main challenge is to achieve temporal consistency while remaining faithful to the reference style. To address this issue, we introduce a recurrent…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Bo Zhang , Mingming He , Jing Liao , Pedro V. Sander , Lu Yuan , Amine Bermak , Dong Chen

Graph coloring is a challenging combinatorial optimization problem with a wide range of applications. In this paper, a distribution evolutionary algorithm based on a population of probability model (DEA-PPM) is developed to address it…

Neural and Evolutionary Computing · Computer Science 2023-05-03 Yongjian Xu , Huabin Cheng , Ning Xu , Yu Chen , Chengwang Xie