Results 41 to 50 of about 243,107 (270)

Enhanced Single Shot Small Object Detector for Aerial Imagery Using Super-Resolution, Feature Fusion and Deconvolution

Sensors, 2022
One common issue of object detection in aerial imagery is the small size of objects in proportion to the overall image size. This is mainly caused by high camera altitude and wide-angle lenses that are commonly used in drones aimed to maximize the ...
Mahdi Maktab Dar Oghaz, Manzoor Razaak, Paolo Remagnino   +2 more
doaj   +1 more source

Semi-Blind Spatially-Variant Deconvolution in Optical Microscopy with Local Point Spread Function Estimation By Use Of Convolutional Neural Networks

, 2019
We present a semi-blind, spatially-variant deconvolution technique aimed at optical microscopy that combines a local estimation step of the point spread function (PSF) and deconvolution using a spatially variant, regularized Richardson-Lucy algorithm. To
Liebling, Michael, Shajkofci, Adrian
core   +1 more source

Recent Advances in Spatially Incoherent Coded Aperture Imaging Technologies

Technologies
Coded aperture imaging (CAI) is a powerful imaging technology that has rapidly developed during the past decade. CAI technology and its integration with incoherent holography have led to the development of several cutting-edge imaging tools, devices, and
Vipin Tiwari, Shivasubramanian Gopinath, Tauno Kahro, Francis Gracy Arockiaraj, Agnes Pristy Ignatius Xavier, Narmada Joshi, Kaupo Kukli, Aile Tamm, Saulius Juodkazis, Joseph Rosen, Vijayakumar Anand   +10 more
doaj   +1 more source

Impact of age, sex and body mass index on cortisol secretion in 143 healthy adults

Endocrine Connections, 2017
Context: Studies on 24-h cortisol secretion are rare. The impact of sex, age and adiposity on cortisol levels, often restricted to one or a few samples, are well recognized, but conflicting. Objective: To investigate cortisol dynamics in 143 healthy men
Ferdinand Roelfsema, Diana van Heemst, Ali Iranmanesh, Paul Takahashi, Rebecca Yang, Johannes D Veldhuis   +5 more
doaj   +1 more source

Phase and TV Based Convex Sets for Blind Deconvolution of Microscopic Images [PDF]

, 2015
In this article, two closed and convex sets for blind deconvolution problem are proposed. Most blurring functions in microscopy are symmetric with respect to the origin.
Cetin, A. Enis, Tofighi, Mohammad, Yorulmaz, Onur   +2 more
core   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Optimizing cognitive neuroscience experiments for separating event- related fMRI BOLD responses in non-randomized alternating designs

Frontiers in Neuroimaging, 2023
Functional magnetic resonance imaging (fMRI) has revolutionized human brain research. But there exists a fundamental mismatch between the rapid time course of neural events and the sluggish nature of the fMRI blood oxygen level-dependent (BOLD) signal ...
Soukhin Das, Soukhin Das, Weigang Yi, Mingzhou Ding, George R. Mangun, George R. Mangun, George R. Mangun   +6 more
doaj   +1 more source

Magnetization transitions obtained by deconvolution of measured replay pulses in perpendicular magnetic recording [PDF]

, 1986
Magnetization transitions in perpendicular magnetic recording have been calculated from measured replay pulses by a deconvolution algorithm using an analytical expression for the field of a probe head (PH). The transitions appear to be asymmetric whereby
Bie, R.W. de, Lodder, J.C., Luitjens, S.B., Vos, M.J.   +3 more
core   +3 more sources

Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer

Molecular Oncology, EarlyView.
PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta, Yang Song, Madeleine Ndahayo, Anirudh Saxena, Theresa Guo, Dylan Z. Kelley, Jessica Gore, Andrew Hennigan, Alexa Anderson, John C. Papadimitriou, Daria A. Gaykalova   +10 more
wiley   +1 more source

Deblurring, artifact-free optical coherence tomography with deconvolution-random phase modulation

Opto-Electronic Science
Deconvolution is a commonly employed technique for enhancing image quality in optical imaging methods. Unfortunately, its application in optical coherence tomography (OCT) is often hindered by sensitivity to noise, which leads to additive ringing ...
Xin Ge, Si Chen, Kan Lin, Guangming Ni, En Bo, Lulu Wang, Linbo Liu   +6 more
doaj   +1 more source