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We describe and experimentally validate an algorithm to reconstruct an unknown extended object from through-focus measured image intensities blurred by unknown aberrations. It is shown that the method can recover diffraction-limited image…

Optics · Physics 2015-10-29 Yifeng Shao , Niek Doelman , Silvania F. Pereira , H. Paul Urbach

Quantifying the degree of similarity between images is a key copyright issue for image-based machine learning. In legal doctrine however, determining the degree of similarity between works requires subjective analysis, and fact-finders…

Computer Vision and Pattern Recognition · Computer Science 2024-02-15 Alessandro Achille , Greg Ver Steeg , Tian Yu Liu , Matthew Trager , Carson Klingenberg , Stefano Soatto

Many surface cues support three-dimensional shape perception, but people can sometimes still see shape when these features are missing -- in extreme cases, even when an object is completely occluded, as when covered with a draped cloth. We…

Neurons and Cognition · Quantitative Biology 2023-01-11 Ilker Yildirim , Max H. Siegel , Amir A. Soltani , Shraman Ray Chaudhari , Joshua B. Tenenbaum

Superpixels are higher-order perceptual groups of pixels in an image, often carrying much more information than the raw pixels. There is an inherent relational structure to the relationship among different superpixels of an image such as…

Computer Vision and Pattern Recognition · Computer Science 2022-05-23 Gunjan Chhablani , Abheesht Sharma , Harshit Pandey , Tirtharaj Dash

Object recognition is a critical part of any surveillance system. It is the matter of utmost concern to identify intruders and foreign objects in the area where surveillance is done. The performance of surveillance system using the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-11 Aashish Bhandari , Aayush Kafle , Pranjal Dhakal , Prateek Raj Joshi , Dinesh Baniya Kshatri

As both computer vision models and biomedical datasets grow in size, there is an increasing need for efficient inference algorithms. We utilize cascade detectors to efficiently identify sparse objects in multiresolution images. Given an…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Thomas L. Athey , Shashata Sawmya , Nir Shavit

When we experience an event, it feels like our previous experiences, our interpretations of that event (e.g., aesthetics, emotions), and our current state will determine how we will remember it. However, recent work has revealed a strong…

Neurons and Cognition · Quantitative Biology 2021-04-15 Wilma A. Bainbridge

The growing presence of devices carrying digital cameras, such as mobile phones and tablets, combined with ever improving internet networks have enabled ordinary citizens, victims of human rights abuse, and participants in armed conflicts,…

Computer Vision and Pattern Recognition · Computer Science 2017-03-31 Grigorios Kalliatakis , Shoaib Ehsan , Klaus D. McDonald-Maier

Imagine trying to track one particular fruitfly in a swarm of hundreds. Higher biological visual systems have evolved to track moving objects by relying on both appearance and motion features. We investigate if state-of-the-art deep neural…

Computer Vision and Pattern Recognition · Computer Science 2021-06-04 Drew Linsley , Girik Malik , Junkyung Kim , Lakshmi N Govindarajan , Ennio Mingolla , Thomas Serre

With a single eye fixation lasting a fraction of a second, the human visual system is capable of forming a rich representation of a complex environment, reaching a holistic understanding which facilitates object recognition and detection.…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Mason Liu , Menglong Zhu , Marie White , Yinxiao Li , Dmitry Kalenichenko

Can our video understanding systems perceive objects when a heavy occlusion exists in a scene? To answer this question, we collect a large-scale dataset called OVIS for occluded video instance segmentation, that is, to simultaneously…

Computer Vision and Pattern Recognition · Computer Science 2022-05-18 Jiyang Qi , Yan Gao , Yao Hu , Xinggang Wang , Xiaoyu Liu , Xiang Bai , Serge Belongie , Alan Yuille , Philip H. S. Torr , Song Bai

Common-sense physical reasoning in the real world requires learning about the interactions of objects and their dynamics. The notion of an abstract object, however, encompasses a wide variety of physical objects that differ greatly in terms…

Machine Learning · Computer Science 2020-12-16 Aleksandar Stanić , Sjoerd van Steenkiste , Jürgen Schmidhuber

Medical images can be used to predict a clinical score coding for the severity of a disease, a pain level or the complexity of a cognitive task. In all these cases, the predicted variable has a natural order. While a standard classifier…

Machine Learning · Computer Science 2012-10-02 Fabian Pedregosa , Alexandre Gramfort , Gaël Varoquaux , Elodie Cauvet , Christophe Pallier , Bertrand Thirion

The neuronal mechanisms that serve to distinguish between light-emitting and light reflecting objects are largely unknown. It has been suggested that luminosity perception implements a separate pathway in the visual system, such that…

Neurons and Cognition · Quantitative Biology 2007-09-21 Matthias S. Keil

Image transmission through multimode optical fibers has been an area of immense interests driven by the demand for miniature endoscopes in biomedicine and higher speed and capacity in telecommunications. Conventionally, a complex-valued…

Optics · Physics 2020-07-15 Tianrui Zhao , Sebastien Ourselin , Tom Vercauteren , Wenfeng Xia

One of the most well-established tools for modeling the brain as a complex system is the functional connectivity network, which examines the correlations between pairs of interacting brain regions. While powerful, the network model is…

Information Theory · Computer Science 2022-06-15 Thomas F. Varley , Maria Pope , Joshua Faskowitz , Olaf Sporns

This paper proposes an interactive system for mobile devices controlled by hand gestures aimed at helping people with visual impairments. This system allows the user to interact with the device by making simple static and dynamic hand…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Samer Alashhab , Antonio Javier Gallego , Miguel Ángel Lozano

When searching for a target within an image our brain can adopt different strategies, but which one does it choose? This question can be answered by tracking the motion of the eye while it executes the task. Following many individuals…

Neurons and Cognition · Quantitative Biology 2017-09-04 Tatiana A. Amor , Mirko Lukovic , Hans J. Herrmann , Jose S. Andrade

We propose an optical read-out scheme allowing a demonstration of principle of information extraction below the diffraction limit. This technique, which could lead to improvement in data read-out density onto optical discs, is independent…

Quantum Physics · Physics 2009-11-11 Vincent Delaubert , Nicolas Treps , Gao Bo , Claude Fabre

Image orientation detection requires high-level scene understanding. Humans use object recognition and contextual scene information to correctly orient images. In literature, the problem of image orientation detection is mostly confronted…

Computer Vision and Pattern Recognition · Computer Science 2017-12-05 Kunal Swami , Pranav P. Deshpande , Gaurav Khandelwal , Ajay Vijayvargiya