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Lensless cameras provide a framework to build thin imaging systems by replacing the lens in a conventional camera with an amplitude or phase mask near the sensor. Existing methods for lensless imaging can recover the depth and intensity of…

Image and Video Processing · Electrical Eng. & Systems 2021-08-19 Yucheng Zheng , Yi Hua , Aswin C. Sankaranarayanan , M. Salman Asif

Images captured under low-light conditions often suffer from (partially) poor visibility. Besides unsatisfactory lightings, multiple types of degradations, such as noise and color distortion due to the limited quality of cameras, hide in…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Yonghua Zhang , Jiawan Zhang , Xiaojie Guo

Anomaly detection and localization in images is a growing field in computer vision. In this area, a seemingly understudied problem is anomaly clustering, i.e., identifying and grouping different types of anomalies in a fully unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2024-04-19 Andrei-Timotei Ardelean , Tim Weyrich

Image based rendering is a fundamental problem in computer vision and graphics. Modern techniques often rely on depth image for the 3D construction. However for most of the existing depth cameras, the large and unpredictable noises can be…

Computer Vision and Pattern Recognition · Computer Science 2016-02-17 Rashi Chaudhary , Himanshu Dasgupta

A Bayesian approach is presented for detecting and characterising the signal from discrete objects embedded in a diffuse background. The approach centres around the evaluation of the posterior distribution for the parameters of the discrete…

Astrophysics · Physics 2009-11-07 M. P. Hobson , C. McLachlan

Some hypothetical particles are considered essentially undetectable because they are far too light and slow-moving to transfer appreciable energy or momentum to the normal matter that composes a detector. I propose instead directly…

Quantum Physics · Physics 2013-08-01 C. Jess Riedel

The purpose of this paper is to introduce an algorithm that can detect the most unusual part of a digital image in probabilistic setting. The most unusual part of a given shape is defined as a part of the image that has the maximal distance…

Data Analysis, Statistics and Probability · Physics 2015-03-17 Kostadin Koroutchev , Elka Korutcheva

Many images shared over the web include overlaid objects, or visual motifs, such as text, symbols or drawings, which add a description or decoration to the image. For example, decorative text that specifies where the image was taken,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-08 Amir Hertz , Sharon Fogel , Rana Hanocka , Raja Giryes , Daniel Cohen-Or

This article discusses the opportunities, applications and future directions of large-scale pre-trained models, i.e., foundation models, for analyzing medical images. Medical foundation models have immense potential in solving a wide range…

Image and Video Processing · Electrical Eng. & Systems 2023-11-23 Shaoting Zhang , Dimitris Metaxas

Model visualizations provide information that outputs alone might miss. But can we trust that model visualizations reflect model behavior? For instance, can they diagnose abnormal behavior such as planted backdoors or overregularization? To…

Machine Learning · Computer Science 2023-05-31 Jean-Stanislas Denain , Jacob Steinhardt

In the cold dark matter scenario, dark matter halos are assembled hierarchically from smaller subunits. Some of these subunits are disrupted during the merging process, whereas others survive temporarily in the form of subhalos. A…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 E. Zackrisson , T. Riehm

Visual anomaly detection is an important and challenging problem in the field of machine learning and computer vision. This problem has attracted a considerable amount of attention in relevant research communities. Especially in recent…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Jie Yang , Ruijie Xu , Zhiquan Qi , Yong Shi

For tiny obstacle discovery in a monocular image, edge is a fundamental visual element. Nevertheless, because of various reasons, e.g., noise and similar color distribution with background, it is still difficult to detect the edges of tiny…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Feng Xue , Anlong Ming , Menghan Zhou , Yu Zhou

Image anomaly detection consists in detecting images or image portions that are visually different from the majority of the samples in a dataset. The task is of practical importance for various real-life applications like biomedical image…

Computer Vision and Pattern Recognition · Computer Science 2022-10-28 Axel De Nardin , Pankaj Mishra , Gian Luca Foresti , Claudio Piciarelli

Synthetically generated face images have shown to be indistinguishable from real images by humans and as such can lead to a lack of trust in digital content as they can, for instance, be used to spread misinformation. Therefore, the need to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 M. Ibsen , C. Rathgeb , S. Marcel , C. Busch

Graphic statics is undergoing a renaissance, with computerized visual representation becoming both easier and more spectacular as time passes. While methods of the past are revived and tweaked, little emphasis has been placed on studying…

Classical Physics · Physics 2019-02-25 Tamás Baranyai

Blind image deblurring (BID) is an ill-posed inverse problem, usually addressed by imposing prior knowledge on the (unknown) image and on the blurring filter. Most of the work on BID has focused on natural images, using image priors based…

Computer Vision and Pattern Recognition · Computer Science 2017-09-07 Marina Ljubenović , Mário A. T. Figueiredo

Convolutional neural networks (CNN) have proven to be state of the art methods for many image classification tasks and their use is rapidly increasing in remote sensing problems. One of their major strengths is that, when enough data is…

Computer Vision and Pattern Recognition · Computer Science 2020-12-11 Gonzalo Mateo-García , Luis Gómez-Chova , Gustau Camps-Valls

The cold dark matter scenario predicts that a large number of dark subhalos should be located within the halo of each Milky-way sized galaxy. One tell-tale signature of such dark subhalos could be additional milliarcsecond-scale image…

Astrophysics · Physics 2009-11-13 E. Zackrisson , T. Riehm , O. Moeller , K. Wiik , P. Nurmi

This paper introduces an unsupervised technique to detect the changed region of multitemporal images on a same reference plane with the help of rough clustering. The proposed technique is a soft-computing approach, based on the concept of…

Computer Vision and Pattern Recognition · Computer Science 2014-04-25 Chandranath Adak