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A novel hierarchical model is introduced to solve a general problem of detecting groups of similar objects. Under this model, detection of groups is performed in hierarchically organized layers while each layer represents a scope for target…

Computer Vision and Pattern Recognition · Computer Science 2016-03-21 Yin Yin , Sergei V. Fotin , Hrishikesh Haldankar , Jeffrey W. Hoffmeister , Senthil Periaswamy

Reconstructing the 3D location and size of microparticles from diffraction images - holograms - is a computationally expensive inverse problem that has traditionally been solved using physics-based reconstruction methods. More recently,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Ayush Paliwal , Oliver Schlenczek , Birte Thiede , Manuel Santos Pereira , Katja Stieger , Eberhard Bodenschatz , Gholamhossein Bagheri , Alexander Ecker

Currently Mammography is a most effective imaging modality used by radiologists for the screening of breast cancer. Finding an accurate, robust and efficient breast region segmentation technique still remains a challenging problem in…

Computer Vision and Pattern Recognition · Computer Science 2013-07-30 R. Subash Chandra Boss , K. Thangavel , D. Arul Pon Daniel

Improving the diversity of generated results while maintaining high visual quality remains a significant challenge in image generation tasks. Fractal Generative Models (FGMs) are efficient in generating high-quality images, but their…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Haowei Zhang , Yuanpei Zhao , Ji-Zhe Zhou , Mao Li

We describe an automated method, the Cut & Enhance method (CE) for detecting clusters of galaxies in multi-color optical imaging surveys. This method uses simple color cuts, combined with a density enhancement algorithm, to up-weight pairs…

Accurate and timely identification of pulmonary nodules on chest X-rays can differentiate between life-saving early treatment and avoidable invasive procedures. Calcification is a definitive indicator of benign nodules and is the primary…

Image and Video Processing · Electrical Eng. & Systems 2025-08-19 Hyeonjin Choi , Yang-gon Kim , Dong-yeon Yoo , Ju-sung Sun , Jung-won Lee

The degree of fractal substructure in molecular clouds can be quantified by comparing them with Fractional Brownian Motion (FBM) surfaces or volumes. These fields are self-similar over all length scales and characterised by a drift exponent…

Astrophysics of Galaxies · Physics 2019-05-20 O. Lomax , M. L. Bates , A. P. Whitworth

Mass classification of objects is an important area of research and application in a variety of fields. In this paper, we present an efficient computer aided mass classification method in digitized mammograms using Fuzzy K-Nearest Neighbor…

Computer Vision and Pattern Recognition · Computer Science 2014-06-19 I. Laurence Aroquiaraj , K. Thangavel

Segmenting a MRI images into homogeneous texture regions representing disparate tissue types is often a useful preprocessing step in the computer-assisted detection of breast cancer. That is why we proposed new algorithm to detect cancer in…

Computer Vision and Pattern Recognition · Computer Science 2010-01-26 H. B. Kekre , Tanuja K. Sarode , Saylee M. Gharge

Breast cancer exhibits intricate morphological and dynamical heterogeneity across cellular, tissue, and tumor scales, posing challenges to conventional modeling approaches that fail to capture its nonlinear, self-similar, or self-affine,…

Quantitative Methods · Quantitative Biology 2025-11-18 Abhijeet Das , Ramray Bhat , Mohit Kumar Jolly

The role of major mergers in galaxy evolution remains a key open question. Existing empirical merger identification methods use non-parametric and subjective visual classifications which can pose systematic challenges to constraining merger…

Manual segmentation of medical images (e.g., segmenting tumors in CT scans) is a high-effort task that can be accelerated with machine learning techniques. However, selecting the right segmentation approach depends on the evaluation…

Computer Vision and Pattern Recognition · Computer Science 2023-02-09 Seyed M. R. Modaresi , Aomar Osmani , Mohammadreza Razzazi , Abdelghani Chibani

Breast X-ray CT imaging is being considered in screening as an extension to mammography. As a large fraction of the population will be exposed to radiation, low-dose imaging is essential. Iterative image reconstruction based on solving an…

Medical Physics · Physics 2011-11-14 Jakob H. Jørgensen , Emil Y. Sidky , Xiaochuan Pan

Maternal-fetal Ultrasound is the primary modality for monitoring fetal development, yet automated segmentation remains challenging due to the scarcity of high-quality annotations. To address this limitation, we propose a semi-supervised…

Image and Video Processing · Electrical Eng. & Systems 2025-09-09 Fangyijie Wang , Guénolé Silvestre , Kathleen M. Curran

Cloud detection is an important preprocessing step for the precise application of optical satellite imagery. In this paper, we propose a deep learning based cloud detection method named multi-scale convolutional feature fusion (MSCFF) for…

Computer Vision and Pattern Recognition · Computer Science 2019-03-06 Zhiwei Li , Huanfeng Shen , Qing Cheng , Yuhao Liu , Shucheng You , Zongyi He

The present work shows a novel fractal dimension method for shape analysis. The proposed technique extracts descriptors from the shape by applying a multiscale approach to the calculus of the fractal dimension of that shape. The fractal…

Data Analysis, Statistics and Probability · Physics 2015-06-03 André R. Backes , João B. Florindo , Odemir M. Bruno

Image segmentation is a vital part of image processing. Segmentation has its application widespread in the field of medical images in order to diagnose curious diseases. The same medical images can be segmented manually. But the accuracy of…

Computer Vision and Pattern Recognition · Computer Science 2010-04-13 M. Gomathi , P. Thangaraj

Small objects detection is a challenging task in computer vision due to its limited resolution and information. In order to solve this problem, the majority of existing methods sacrifice speed for improvement in accuracy. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Guimei Cao , Xuemei Xie , Wenzhe Yang , Quan Liao , Guangming Shi , Jinjian Wu

This work presents a methodology to the morphology analysis and characterization of nanostructured material images acquired from FEG-SEM (Field Emission Gun-Scanning Electron Microscopy) technique. The metrics were extracted from the image…

Data Analysis, Statistics and Probability · Physics 2015-06-12 João B. Florindo , Mariana S. Sikora , Ernesto C. Pereira , Odemir M. Bruno

Clustering algorithms play a pivotal role in unsupervised learning by identifying and grouping similar objects based on shared characteristics. Although traditional clustering techniques, such as hard and fuzzy center-based clustering, have…

Machine Learning · Computer Science 2025-08-13 Swagato Das , Arghya Pratihar , Swagatam Das