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This paper rethinks image histogram matching (HM) and proposes a differentiable and parametric HM preprocessing for a downstream classifier. Convolutional neural networks have demonstrated remarkable achievements in classification tasks.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Rikuto Otsuka , Yuho Shoji , Yuka Ogino , Takahiro Toizumi , Atsushi Ito

While large vision-language models (LVLMs) have demonstrated impressive capabilities in interpreting multi-modal contexts, they invariably suffer from object hallucinations (OH). We introduce HALC, a novel decoding algorithm designed to…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Zhaorun Chen , Zhuokai Zhao , Hongyin Luo , Huaxiu Yao , Bo Li , Jiawei Zhou

The increase in the observed volume in cosmological surveys imposes various challenges on simulation preparations. Firstly, the volume of the simulations required increases proportionally to the observations. However, large-volume…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-01 Daniel Forero-Sánchez , Chia-Hsun Chuang , Sergio Rodríguez-Torres , Gustavo Yepes , Stefan Gottlöber , Cheng Zhao

The structural and dynamic properties of the dark matter halos, though an important ingredient in understanding large-scale structure formation, require more conservative particle resolution than those required by halo mass alone in a…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-23 Sujatha Ramakrishnan , Premvijay Velmani

Over the years, various algorithms were developed, attempting to imitate the Human Visual System (HVS), and evaluate the perceptual image quality. However, for certain image distortions, the functionality of the HVS continues to be an…

Image and Video Processing · Electrical Eng. & Systems 2022-08-09 Shira Faigenbaum-Golovin , Or Shimshi

Holographic displays offer significant potential for augmented and virtual reality applications by reconstructing wavefronts that enable continuous depth cues and natural parallax without vergence-accommodation conflict. However, despite…

Holographic near-eye displays are a promising technology to solve long-standing challenges in virtual and augmented reality display systems. Over the last few years, many different computer-generated holography (CGH) algorithms have been…

Graphics · Computer Science 2024-04-19 Dongyeon Kim , Seung-Woo Nam , Suyeon Choi , Jong-Mo Seo , Gordon Wetzstein , Yoonchan Jeong

Deep learning-based methods for low-light image enhancement typically require enormous paired training data, which are impractical to capture in real-world scenarios. Recently, unsupervised approaches have been explored to eliminate the…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Feng Zhang , Yuanjie Shao , Yishi Sun , Kai Zhu , Changxin Gao , Nong Sang

The quality of images captured in outdoor environments can be affected by poor weather conditions such as fog, dust, and atmospheric scattering of other particles. This problem can bring extra challenges to high-level computer vision tasks…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Jiaxi He , Frank Z. Xing , Ran Yang , Cishen Zhang

Guided image filter is a well-known local filter in image processing. However, the presence of halo artifacts is a common issue associated with this type of filter. This paper proposes an algorithm that utilizes gradient information to…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Bo Wang , Yihong Wang , Xiubao Sui , Yuan Liu , Qian Chen

Holographic displays are widely regarded as the "ultimate" display technology, promising immersive 3D visuals with natural depth cues, continuous parallax, and perceptual realism. Realizing this potential, however, has remained elusive due…

Optics · Physics 2026-04-20 Anzhou Wen , Praneeth Chakravarthula

Histogram Equalization (HE) is a popular method for contrast enhancement. Generally, mean brightness is not conserved in Histogram Equalization. Initially, Bi-Histogram Equalization (BBHE) was proposed to enhance contrast while maintaining…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Abhishek Saroha , Avichal Rakesh , Rajiv Kumar Tripathi

Holographic displays are a promising technology for immersive visual experiences, and their potential for compact form factor makes them a strong candidate for head-mounted displays. However, at the short propagation distances needed for a…

Human-Object Interaction (HOI) detection aims to understand the interactions between humans and objects, which plays a curtail role in high-level semantic understanding tasks. However, most works pursue designing better architectures to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Shuman Fang , Shuai Liu , Jie Li , Guannan Jiang , Xianming Lin , Rongrong Ji

In this paper, a comparative study between proposed hyper kurtosis based modified duo-histogram equalization (HKMDHE) algorithm and contrast limited adaptive histogram enhancement (CLAHE) has been presented for the implementation of…

Computer Vision and Pattern Recognition · Computer Science 2015-05-26 Sabyasachi Mukhopadhyay , Soham Mandal , Sawon Pratiher , Satyasaran Changdar , Ritwik Burman , Nirmalya Ghosh , Prasanta K. Panigrahi

Homography estimation is often an indispensable step in many computer vision tasks. The existing approaches, however, are not robust to illumination and/or larger viewpoint changes. In this paper, we propose bidirectional implicit…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Daniel Koguciuk , Elahe Arani , Bahram Zonooz

Addition of random phase to the object light is required in computer-generated holograms (CGHs) to widely diffuse the object light and to avoid its concentration on the CGH; however, this addition causes considerable speckle noise in the…

Optics · Physics 2015-06-24 Tomoyoshi Shimobaba , Tomoyoshi Ito

Cosmological N-body simulations have been a major tool of theorists for decades, yet many of the numerical issues that these simulations face are still unexplored. This paper measures numerical biases in these large, dark matter-only…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-11 Philip Mansfield , Camille Avestruz

Contrast enhancement is an important area of research for the image analysis. Over the decade, the researcher worked on this domain to develop an efficient and adequate algorithm. The proposed method will enhance the contrast of image using…

Multimedia · Computer Science 2012-05-08 Aroop Mukherjee , Soumen Kanrar

Low-light image enhancement remains an open problem, and the new wave of artificial intelligence is at the center of this problem. This work describes the use of genetic algorithms for optimizing analytical models that can improve the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-11 Axel Martinez , Emilio Hernandez , Matthieu Olague , Gustavo Olague