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Calibration in a multi camera network has widely been studied for over several years starting from the earlier days of photogrammetry. Many authors have presented several calibration algorithms with their relative advantages and…

Computer Vision and Pattern Recognition · Computer Science 2010-11-03 Ayan Chaudhury , Abhishek Gupta , Sumita Manna , Subhadeep Mukherjee , Amlan Chakrabarti

In this paper, a fresh procedure to handle image mixtures by means of blind signal separation relying on a combination of second order and higher order statistics techniques are introduced. The problem of blind signal separation is…

Computer Vision and Pattern Recognition · Computer Science 2016-03-29 Felipe P. do Carmo , Joaquim T. de Assis , Vania V. Estrela , Alessandra M. Coelho

Recent work has shown impressive localization performance using only images of ground textures taken with a downward facing monocular camera. This provides a reliable navigation method that is robust to feature sparse environments and…

Robotics · Computer Science 2023-03-13 Kyle M. Hart , Brendan Englot , Ryan P. O'Shea , John D. Kelly , David Martinez

6D object pose estimation is widely applied in robotic tasks such as grasping and manipulation. Prior methods using RGB-only images are vulnerable to heavy occlusion and poor illumination, so it is important to complement them with depth…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Yi Cheng , Hongyuan Zhu , Ying Sun , Cihan Acar , Wei Jing , Yan Wu , Liyuan Li , Cheston Tan , Joo-Hwee Lim

Image matting is generally modeled as a space transform from the color space to the alpha space. By estimating the alpha factor of the model, the foreground of an image can be extracted. However, there is some dimensional information…

Computer Vision and Pattern Recognition · Computer Science 2019-04-17 Xuelong Li , Kang Liu , Yongsheng Dong , Dacheng Tao

Event-based cameras are increasingly utilized in various applications, owing to their high temporal resolution and low power consumption. However, a fundamental challenge arises when deploying multiple such cameras: they operate on…

Robotics · Computer Science 2023-10-02 Wanli Xing , Shijie Lin , Guangze Zheng , Yanjun Du , Jia Pan

Human matting refers to extracting human parts from natural images with high quality, including human detail information such as hair, glasses, hat, etc. This technology plays an essential role in image synthesis and visual effects in the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Qing Song , Wenfeng Sun , Donghan Yang , Mengjie Hu , Chun Liu

DSLR cameras can achieve multiple zoom levels via shifting lens distances or swapping lens types. However, these techniques are not possible on smartphone devices due to space constraints. Most smartphone manufacturers adopt a hybrid zoom…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Xiaotong Wu , Wei-Sheng Lai , YiChang Shih , Charles Herrmann , Michael Krainin , Deqing Sun , Chia-Kai Liang

In this paper, we explore how conventional image enhancement can improve model robustness in medical image analysis. By applying commonly used normalization methods to images from various vendors and studying their influence on model…

Computer Vision and Pattern Recognition · Computer Science 2025-08-13 Yucheng Lu , Shunxin Wang , Dovile Juodelyte , Veronika Cheplygina

Single-view RGB model-based object pose estimation methods achieve strong generalization but are fundamentally limited by depth ambiguity, clutter, and occlusions. Multi-view pose estimation methods have the potential to solve these issues,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Anna Šárová Mikeštíková , Médéric Fourmy , Martin Cífka , Josef Sivic , Vladimir Petrik

A unified method for three-dimensional reconstruction of objects from transmission images collected at multiple illumination directions is described. The method may be applicable to experimental conditions relevant to absorption-based,…

Medical Physics · Physics 2022-12-07 Timur E. Gureyev , Hamish G. Brown , Harry M. Quiney , Leslie J. Allen

The dual camera system of wide-angle ($\bf{W}$) and telephoto ($\bf{T}$) cameras has been widely adopted by popular phones. In the overlap region, fusing the $\bf{W}$ and $\bf{T}$ images can generate a higher quality image. Related works…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Tiantian Cao , Xuan Dong , Chunli Peng , Zhengqing Li , Xinyu Guo , Weixin Li

Color image segmentation is a very emerging research topic in the area of color image analysis and pattern recognition. Many state-of-the-art algorithms have been developed for this purpose. But, often the segmentation results of these…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Dibya Jyoti Bora

In this paper, we propose a novel white balance adjustment, called "spatially varying white balancing," for single, mixed, and non-uniform illuminants. By using n diagonal matrices along with a weight, the proposed method can reduce…

Computer Vision and Pattern Recognition · Computer Science 2021-09-06 Teruaki Akazawa , Yuma Kinoshita , Hitoshi Kiya

High-quality image acquisition in real-world environments remains challenging due to complex illumination variations and inherent limitations of camera imaging pipelines. These issues are exacerbated in multi-view capture, where differences…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Ziteng Cui , Shuhong Liu , Xiaoyu Dong , Xuangeng Chu , Lin Gu , Ming-Hsuan Yang , Tatsuya Harada

Artificial intelligence (AI) has introduced numerous opportunities for human assistance and task automation in medicine. However, it suffers from poor generalization in the presence of shifts in the data distribution. In the context of…

Accurately estimating scene lighting is critical for applications such as mixed reality. Existing works estimate illumination by generating illumination maps or regressing illumination parameters. However, the method of generating…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Xinlong Ji , Fangneng Zhan , Shijian Lu , Shi-Sheng Huang , Hua Huang

This research paper explores the application of style transfer in computer vision using RGB images and their corresponding depth maps. We propose a novel method that incorporates the depth map and a heatmap of the RGB image to generate more…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Bhavya Sehgal , Vaishnavi Mendu , Aparna Mendu

We introduce a new method for determining the global stability of synchronization in systems of coupled identical maps. The method is based on the study of invariant measures. Besides the simplest non-trivial example, namely two…

Chaotic Dynamics · Physics 2007-05-23 Juergen Jost , Kiran M. Kolwankar

Determining the position and orientation of a calibrated camera from a single image with respect to a 3D model is an essential task for many applications. When 2D-3D correspondences can be obtained reliably, perspective-n-point solvers can…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Dylan Campbell , Lars Petersson , Laurent Kneip , Hongdong Li , Stephen Gould