Results 21 to 30 of about 3,233,420 (192)

A bottom–up model of spatial attention predicts human error patterns in rapid scene recognition [PDF]

open access: yes, 2007
Humans demonstrate a peculiar ability to detect complex targets in rapidly presented natural scenes. Recent studies suggest that (nearly) no focal attention is required for overall performance in such tasks.
Baldi, Pierre   +4 more
core   +2 more sources

Space-Range-Doppler Focus-Based Low-observable Moving Target Detection Using Frequency Diverse Array MIMO Radar

open access: yesIEEE Access, 2018
The radar echoes of moving targets in a clutter background are extremely weak and their characteristics are complex. A low-observable moving target detection technology has become a key constraint to radar performance, requiring the radar to provide ...
Xiaolong Chen   +4 more
doaj   +1 more source

Remote Sensing Low Signal-to-Noise-Ratio Target Detection Enhancement

open access: yesSensors, 2023
In real-time remote sensing application, frames of data are continuously flowing into the processing system. The capability of detecting objects of interest and tracking them as they move is crucial to many critical surveillance and monitoring missions ...
Tian J. Ma, Robert J. Anderson
doaj   +1 more source

An ultrasensitive photoelectrochemical nucleic acid biosensor [PDF]

open access: yes, 2005
A simple and ultrasensitive procedure for non-labeling detection of nucleic acids is described in this study. It is based on the photoelectrochemical detection of target nucleic acids by forming a nucleic acid/photoreporter adduct layer on an ITO ...
Gao, Zhiqiang, Tansil, Natalia C.
core   +3 more sources

Non-targeted Tracer Fate Detection [PDF]

open access: yes, 2015
Stable isotopes have been used to trace atoms through metabolism and quantify metabolic fluxes for several decades. Only recently non-targeted stable isotope labeling approaches have emerged as a powerful tool to gain insights into metabolism. However, the manual detection of isotopic enrichment for a non-targeted analysis is tedious and time consuming.
Weindl, Daniel   +2 more
openaire   +3 more sources

Target-adaptive Graph for Cross-target Stance Detection [PDF]

open access: yesProceedings of the Web Conference 2021, 2021
Target plays an essential role in stance detection of an opinionated review/claim, since the stance expressed in the text often depends on the target. In practice, we need to deal with targets unseen in the annotated training data. As such, detecting stance for an unknown or unseen target is an important research problem.
Liang, Bin   +6 more
openaire   +1 more source

Departure from the onset-onset rule [PDF]

open access: yes, 1994
Using a signal-detection task, the generality of Turvey's (1973) onset-onset rule was tested in four experiments. After seeing, in succession, (1) one or two letters (target display), (2) a multiletter detection display, and (3) a mask display, subjects ...
Chow, Siu
core   +1 more source

Research on Multi-Ship Target Detection and Tracking Method Based on Camera in Complex Scenes

open access: yesJournal of Marine Science and Engineering, 2022
Aiming at the problem that multi-ship target detection and tracking based on cameras is difficult to meet the accuracy and speed requirements at the same time in some complex scenes, an improved YOLOv4 algorithm is proposed, which simplified the network ...
Xiaobin Hong   +4 more
doaj   +1 more source

SegDetector: A Deep Learning Model for Detecting Small and Overlapping Damaged Buildings in Satellite Images

open access: yesRemote Sensing, 2022
Buildings bear much of the damage from natural disasters, and determining the extent of this damage is of great importance to post-disaster emergency relief.
Zhengbo Yu   +7 more
doaj   +1 more source

A target guided subband filter for acoustic event detection in noisy environments using wavelet packets [PDF]

open access: yes, 2014
This paper deals with acoustic event detection (AED), such as screams, gunshots, and explosions, in noisy environments. The main aim is to improve the detection performance under adverse conditions with a very low signal-to-noise ratio (SNR).
Feng, Zu-Ren   +4 more
core   +1 more source

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