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Generally, wave field reconstructions obtained by phase-retrieval algorithms are noisy, blurred and corrupted by various artifacts such as irregular waves, spots, etc. These disturbances, arising due to many factors such as non-idealities…

Optics · Physics 2012-07-24 Artem Migukin , Mostafa Agour , Vladimir Katkovnik

Glauber-Sudarshan diagonal coherent state P-representation has been used to determine geometric phase for non-classical states of light. For a given density operator $\hat{\rho_1}$ of two mode optical beam, we evolve it in complex…

Quantum Physics · Physics 2018-08-06 Prosenjit Maity , Sobhan Sounda

Ground segmentation, as the basic task of unmanned intelligent perception, provides an important support for the target detection task. Unstructured road scenes represented by open-pit mines have irregular boundary lines and uneven road…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Zixuan Li , Haiying Lin , Zhangyu Wang , Huazhi Li , Miao Yu , Jie Wang

We introduce CellSegmenter, a structured deep generative model and an amortized inference framework for unsupervised representation learning and instance segmentation tasks. The proposed inference algorithm is convolutional and…

Computer Vision and Pattern Recognition · Computer Science 2020-11-26 Luca D'Alessio , Mehrtash Babadi

Phase-sensitive coherent imaging exploits changes in the phases of backscattered light to observe tiny alterations of scattering structures or variations of the refractive index. But moving scatterers or a fluctuating refractive index…

Nonlinear observer design for systems whose state space evolves on Lie groups is considered. The proposed method is similar to previously developed nonlinear observers in that it involves propagating the state estimate using a process model…

Systems and Control · Computer Science 2018-04-10 David Evan Zlotnik , James Richard Forbes

This paper addresses a new class of generalized Bolza problems governed by nonconvex integro-differential inclusions with endpoint constraints on trajectories, where the integral terms are given in the general (with time-dependent…

Optimization and Control · Mathematics 2024-10-07 Abderrahim Bouach , Tahar Haddad , Boris S. Mordukhovich

The analysis of electrical impulse phenomena in cardiac muscle tissue is important for the diagnosis of heart rhythm disorders and other cardiac pathophysiology. Cardiac mapping techniques acquire local temporal measurements and combine…

Medical Physics · Physics 2022-03-21 Jan Lebert , Namita Ravi , Flavio Fenton , Jan Christoph

In a previous work, we introduced a discretization scheme for a constrained optimal control problem involving the fractional Laplacian. For such a control problem, we derived optimal a priori error estimates that demand the convexity of the…

Optimization and Control · Mathematics 2016-03-31 Harbir Antil , Enrique Otarola

A plane topological graph $G=(V,E)$ is a graph drawn in the plane whose vertices are points in the plane and whose edges are simple curves that do not intersect, except at their endpoints. Given a plane topological graph $G=(V,E)$ and a set…

Computational Geometry · Computer Science 2020-07-24 J. C. Catana , A. García , J. Tejel , J. Urrutia

Annotation ambiguity due to inherent data uncertainties such as blurred boundaries in medical scans and different observer expertise and preferences has become a major obstacle for training deep-learning based medical image segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Yicheng Wu , Xiangde Luo , Zhe Xu , Xiaoqing Guo , Lie Ju , Zongyuan Ge , Wenjun Liao , Jianfei Cai

In this paper, we present a new approach to bridge the domain gap between synthetic and real-world data for unmanned aerial vehicle (UAV)-based perception. Our formulation is designed for dynamic scenes, consisting of small moving objects…

Computer Vision and Pattern Recognition · Computer Science 2024-09-19 Christopher Maxey , Jaehoon Choi , Yonghan Lee , Hyungtae Lee , Dinesh Manocha , Heesung Kwon

Controllable character image animation has a wide range of applications. Although existing studies have consistently improved performance, challenges persist in the field of character image animation, particularly concerning stability in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Jingyun Xue , Hongfa Wang , Qi Tian , Yue Ma , Andong Wang , Zhiyuan Zhao , Shaobo Min , Wenzhe Zhao , Kaihao Zhang , Heung-Yeung Shum , Wei Liu , Mengyang Liu , Wenhan Luo

Recently, the joint design of optical systems and downstream algorithms is showing significant potential. However, existing rays-described methods are limited to optimizing geometric degradation, making it difficult to fully represent the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Zheng Ren , Jingwen Zhou , Wenguan Zhang , Jiapu Yan , Bingkun Chen , Huajun Feng , Shiqi Chen

Implicit Neural Representations (INRs), as a versatile representation paradigm, have achieved success in various computer vision tasks. Due to the spectral bias of the vanilla multi-layer perceptrons (MLPs), existing methods focus on…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Kexuan Shi , Hai Chen , Leheng Zhang , Shuhang Gu

Fairness is crucial when training a deep-learning discriminative model, especially in the facial domain. Models tend to correlate specific characteristics (such as age and skin color) with unrelated attributes (downstream tasks), resulting…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Moreno D'Incà , Christos Tzelepis , Ioannis Patras , Nicu Sebe

We consider scenarios where a ground vehicle plans its path using data gathered by an aerial vehicle. In the aerial images, navigable areas of the scene may be occluded due to obstacles. Naively planning paths using aerial images may result…

Robotics · Computer Science 2022-04-26 Vishnu Dutt Sharma , Pratap Tokekar

This paper presents a method for enhancing the gray level images. This method takes part from the category of point transforms and it is based on interpolation functions. The latter have a graphic represented by polygonal lines. The…

Computer Vision and Pattern Recognition · Computer Science 2014-12-19 Vasile Patrascu

This paper contains a concise comparison of a number of nonlinear attitude filtering methods that have attracted attention in the robotics and aviation literature. With the help of previously published surveys and comparison studies, the…

Systems and Control · Computer Science 2015-02-16 M. Zamani , J. Trumpf , R. Mahony

Dual maps have been introduced as a generalization to higher dimensions of word substitutions and free group morphisms. In this paper, we study the action of these dual maps on particular discrete planes and surfaces -- namely stepped…

Discrete Mathematics · Computer Science 2016-08-23 Valérie Berthé , Thomas Fernique
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