Results 201 to 210 of about 8,355,702 (236)

Visual Detection of Fluoride Anions Using Mixed Lanthanide Metal-Organic Frameworks with a Smartphone.

Analytical Chemistry, 2019
Fluoride ion (F-) is one of the most harmful elements in drinking water. Over intake of F- can result in dental fluorosis, kidney failure, or DNA damage.
Xiaoliang Zeng, Jing Hu, Mengmeng Zhang, Fenglei Wang, Li Wu, X. Hou   +5 more
semanticscholar   +1 more source

Ternary Emission of a Blue-, Green-, and Red-Based Molecular Imprinting Fluorescence Sensor for the Multiplexed and Visual Detection of Bovine Hemoglobin.

Analytical Chemistry, 2019
A novel ternary-emission fluorescence sensor was proposed by post-imprinting mixing blue-/green-/red-emission bovine hemoglobin (BHb) imprinted polymers (b-MIPs, g-MIPs, and r-MIPs) at a proper ratio and realized the multiplexed and visual detection of ...
Qian Yang, Jinhua Li, Xiaoyan Wang, H. Xiong, Lingxin Chen   +4 more
semanticscholar   +1 more source

Visual detection of distant objects

Proceedings of 1993 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS '93), 2002
Taking an autonomous road vehicle as an example, approaches and methods for object detection (this being the first step of obstacle recognition) are discussed. Vision, using a single passive camera as the primary sensor and a real-time vision system for analyzing the resulting image sequence, is found to be the best approach.
Ulrich Solder, Volker Graefe
openaire   +1 more source

Visual Detectability of the Convair 580

AIAA Scitech 2019 Forum, 2019
AIAA Scitech 2019 Forum, January 7-11, 2019, San Diego, CA ...
Minwalla, Cyrus, Price, Andrew, Ghinet, Sebastian   +2 more
openaire   +2 more sources

A Visual Grammar for Face Detection

2010
Several methods have been developed for face detection with certain success, however these tend to fail under difficult conditions such as partial occlusions and changes in orientation and illumination. We propose a novel technique for face detection based on a visual grammar.
Augusto Meléndez, Luis Enrique Sucar, Eduardo F. Morales 0001   +2 more
openaire   +1 more source

Clinical Visual Caries Detection

2009
The reliable and reproducible detection of dental caries by clinical examination has been recognized as a problem for decades with very variable approaches being taken to recognize and stage lesions along the continuum of caries--from very small initial lesions, just visible to the human eye, through more established white- and brown-spot lesions, to ...
Topping, GV, Pitts, NB
openaire   +3 more sources

A model of visual threshold detection

Journal of Theoretical Biology, 1977
Abstract A model of visual incremental threshold detection is presented, having the following features. 1. (1) From Crozier's Law we deduce that all thresholds, for conventional as well as for noisy images, are ultimately determined by noise. Other evidence, which is described, supports this conclusion. 2.
G A, Hay, M S, Chesters
openaire   +2 more sources

Mechanisms of visual motion detection

Nature Neuroscience, 2000
Visual motion is processed by neurons in primary visual cortex that are sensitive to spatial orientation and speed. Many models of local velocity computation are based on a second stage that pools the outputs of first-stage neurons selective for different orientations, but the nature of this pooling remains controversial.
P R, Schrater, D C, Knill, E P, Simoncelli   +2 more
openaire   +2 more sources

Visual marking and change detection

Cognitive Processing, 2007
The preview benefit from prior exposure of response-irrelevant (distracter) objects in visual search has been accounted for in terms of top-down inhibition (i.e. visual marking), bottom-up abrupt onset capture, or asynchrony-dependent perceptual segregation.
Jose L. Herrero, Ros Crawley, C. Van Leeuwen, RAFFONE, Antonino   +3 more
openaire   +2 more sources

Video Visual Relation Detection

Proceedings of the 25th ACM international conference on Multimedia, 2017
As a bridge to connect vision and language, visual relations between objects in the form of relation triplet $langle subject,predicate,object\rangle$, such as "person-touch-dog'' and "cat-above-sofa'', provide a more comprehensive visual content understanding beyond objects.
Xindi Shang, Tongwei Ren, Jingfan Guo, Hanwang Zhang, Tat-Seng Chua   +4 more
openaire   +1 more source