scholarly journals Spatial and Temporal Vision in the Absence of Audition

2019 ◽  
Vol 19 (10) ◽  
pp. 9
Author(s):  
Matthew Dye
Keyword(s):  
2019 ◽  
Vol 11 (22) ◽  
pp. 6271 ◽  
Author(s):  
Ran Wang ◽  
Yao Jiang ◽  
Peng Su ◽  
Jing’ai Wang

Due to the effects of global warming, extreme temperature events are posing a great threat to crop yields, especially to temperature-sensitive crops such as rice. In the context of disaster risk theory, exposure is central to disaster prevention and reduction. Thus, a comprehensive analysis of crop exposure is essential to better reduce disaster effects. By combining the maximum entropy model (MaxEnt) and a multiple-criteria decision analysis (MCDA), this paper analyzed the global distribution and change in rice exposure to high temperature. The results showed the future states of rice after exposure to high temperatures. Our results are: (1) the areas of potential rice distribution zones decreased within the representative concentration pathway (RCP) scenarios RCP2.6 to RCP8.5 in MaxEnt, where the long-term (2061–2080) decreases are greater than those seen in the medium term (2041–2060). (2) In the future, the number of high temperature hazards in potential rice distribution areas increased. In the RCP8.5 scenario, the intensities of global high temperature hazards on rice were reduced because the total area of potential rice distribution zones decreased. (3) Through the view of barycenter shift, the barycenter of the global potential rice and high temperature hazard distributions showed a trend of backward motion, which meant the global rice exposure to high temperature was in a downward trend. With the background of global change, this paper has great significance for the mitigation of high temperature risk in rice and its effect on the potential security of future global rice production. Future research is warranted to concentrate on discussing more socioeconomic factors and increasing rice exposure change from the temporal vision.


Author(s):  
CHUNG-MONG LEE ◽  
TING-CHUEN PONG ◽  
JAMES R. SLAGLE

The image correspondence problem has generally been considered the most difficult step in both stereo and temporal vision. Most existing approaches match area features or linear features extracted from an image pair. The approach described in this paper is novel in that it uses an expert system shell to develop an image correspondence knowledge-based system for the general image correspondence problem. The knowledge it uses consists of both physical properties and spatial relationships of the edges and regions in images for every edge or region matching. A computation network is used to represent this knowledge. It allows the computation of the likelihood of matching two edges or regions with logical and heuristic operators. Heuristics for determining the correspondences between image features and the problem of handling missing information will be discussed. The values of the individual matching results are used to direct the traversal and pruning of the global matching process. The problem of parallelizing the entire process will be discussed. Experimental results on real-world images show that all matching edges and regions have been identified correctly.


2004 ◽  
Vol 75 (10) ◽  
pp. 640-650 ◽  
Author(s):  
Harold A. Solan ◽  
John Shelley-Tremblay ◽  
Peter C. Hansen ◽  
Michael E. Silverman ◽  
Steven Larsone ◽  
...  

2001 ◽  
Vol 14 (3-4) ◽  
pp. 261-319 ◽  
Author(s):  
Richard Young ◽  
Ronald Lesperance ◽  
W. Weston Meyer

2014 ◽  
Vol 14 (10) ◽  
pp. 1419-1419
Author(s):  
M. E. Mercer ◽  
G. L. Smith ◽  
P. A. S. Sheppard

2021 ◽  
Vol 15 ◽  
Author(s):  
Xia Hu ◽  
Yi Qin ◽  
Xiaoxiao Ying ◽  
Junli Yuan ◽  
Rong Cui ◽  
...  

PurposeAmblyopia affects not only spatial vision but also temporal vision. In this study, we aim to investigate temporal processing deficits in amblyopia.MethodsTwenty amblyopic patients (age: 27.0 ± 5.53 years, 15 males), and 25 normal observers (age: 25.6 ± 4.03 years, 15 males) were recruited in this study. Contrast thresholds in an orientation discrimination task in five target-mask stimulus onset asynchronies (SOA) conditions (16.7 ms, 33.4 ms, 50.0 ms, 83.4 ms, and ∞/no noise) were measured. An elaborated perceptual template model (ePTM) was fit to the behavioral data to derive the temporal profile of visual processing for each participant.ResultsThere were significant threshold differences between the amblyopic and normal eyes [F(1,43) = 10.6, p = 0.002] and a significant group × SOA interaction [F(2.75,118) = 4.98, p = 0.004], suggesting different temporal processing between the two groups. The ePTM fitted the data well (χ2 test, all ps > 0.50). Compared to the normal eye, the amblyopic eye had a lower template gain (p = 0.046), and a temporal window with lower peak and broader width (all ps < 0.05). No significant correlation was found between the observed temporal deficits and visual acuity in amblyopia (ps > 0.50). Similar results were found in the anisometropic amblyopia subgroup. No significant difference was found between the fellow eyes of the monocular amblyopia and the normal eyes.ConclusionAmblyopia is less efficient in processing dynamic visual stimuli. The temporal deficits in amblyopia, represented by a flattened temporal window, are likely independent of spatial vision deficits.


1999 ◽  
Vol 39 (20) ◽  
pp. 3480-3489 ◽  
Author(s):  
Dave Ellemberg ◽  
Terri L. Lewis ◽  
Daphne Maurer ◽  
Chang Hong Lui ◽  
Henry P. Brent

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