Algorithmic analysis of 3-D depth information for dynamic visual images

1992 ◽  
Author(s):  
Dezong Wang ◽  
Deng-feng Sheng
Keyword(s):  
Visual Images ◽  
Depth Information ◽  
Algorithmic Analysis

scholarly journals Visual Prosthesis

Perception ◽  
10.1068/p6100 ◽  
2008 ◽  
Vol 37 (10) ◽  
pp. 1529-1559 ◽  
Author(s):  
Peter H Schiller ◽  
Edward J Tehovnik
Keyword(s):  
Electrical Stimulation ◽  
Human Subjects ◽  
Visual Prosthesis ◽  
Visual Images ◽  
Depth Information ◽  
Electrode Arrays ◽  
Implanted Electrodes ◽  
Operational Characteristics ◽  
Blind Individuals ◽  
Initial Research

There are more than forty million blind individuals in the world whose plight would be greatly ameliorated by creating a visual prosthesis. We begin by outlining the basic operational characteristics of the visual system, as this knowledge is essential for producing a prosthetic device based on electrical stimulation through arrays of implanted electrodes. We then list a series of tenets that we believe need to be followed in this effort. Central among these is our belief that the initial research in this area, which is in its infancy, should first be carried out on animals. We suggest that implantation of area V1 holds high promise as the area is of a large volume and can therefore accommodate extensive electrode arrays. We then proceed to consider coding operations that can effectively convert visual images viewed by a camera to stimulate electrode arrays to yield visual impressions that can provide shape, motion, and depth information. We advocate experimental work that mimics electrical stimulation effects non-invasively in sighted human subjects with a camera from which visual images are converted into displays on a monitor akin to those created by electrical stimulation.

Learning From (Test) Experience

2020 ◽  
Vol 228 (4) ◽  
pp. 264-277 ◽  
Author(s):  
Evan E. Mitton ◽  
Chris M. Fiacconi
Keyword(s):  
Recognition Memory ◽  
Test Performance ◽  
Memory Performance ◽  
Judgments Of Learning ◽  
Visual Images ◽  
Memory Tests ◽  
Recognition Memory Performance ◽  
Study Test ◽  
Explicit Feedback

Abstract. To date there has been relatively little research within the domain of metamemory that examines how individuals monitor their performance during memory tests, and whether the outcome of such monitoring informs subsequent memory predictions for novel items. In the current study, we sought to determine whether spontaneous monitoring of test performance can in fact help individuals better appreciate their memory abilities, and in turn shape future judgments of learning (JOLs). Specifically, in two experiments we examined recognition memory for visual images across three study-test cycles, each of which contained novel images. We found that across cycles, participants’ JOLs did in fact increase, reflecting metacognitive sensitivity to near-perfect levels of recognition memory performance. This finding suggests that individuals can and do monitor their test performance in the absence of explicit feedback, and further underscores the important role that test experience can play in shaping metacognitive evaluations of learning and remembering.

Time Window from Visual Images to Visual Short-Term Memory: Consolidation or Integration?

2004 ◽  
Vol 51 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Yuhong Jiang
Keyword(s):  
Short Term Memory ◽  
Time Window ◽  
Short Interval ◽  
Visual Images ◽  
Short Term ◽  
Temporal Window ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
Probe Task ◽  
Long Time

Abstract. When two dot arrays are briefly presented, separated by a short interval of time, visual short-term memory of the first array is disrupted if the interval between arrays is shorter than 1300-1500 ms ( Brockmole, Wang, & Irwin, 2002 ). Here we investigated whether such a time window was triggered by the necessity to integrate arrays. Using a probe task we removed the need for integration but retained the requirement to represent the images. We found that a long time window was needed for performance to reach asymptote even when integration across images was not required. Furthermore, such window was lengthened if subjects had to remember the locations of the second array, but not if they only conducted a visual search among it. We suggest that a temporal window is required for consolidation of the first array, which is vulnerable to disruption by subsequent images that also need to be memorized.

Thanato-Laboratorien. Theorien von Tod und Sterben und Elias Canettis Buch gegen den Tod

2020 ◽  
Vol 4 (1) ◽  
pp. 67-86
Author(s):  
Elisabeth Heyne
Keyword(s):  
Human Life ◽  
Death And Dying ◽  
Point Of View ◽  
Visual Images ◽  
Elias Canetti ◽  
History Of ◽  
Series Of Experiments ◽  
First Time ◽  
Textual Form ◽  
Or History

AbstractAlthough visual culture of the 21th century increasingly focuses on representation of death and dying, contemporary discourses still lack a language of death adequate to the event shown by pictures and visual images from an outside point of view. Following this observation, this article suggests a re-reading of 20th century author Elias Canetti. His lifelong notes have been edited and published posthumously for the first time in 2014. Thanks to this edition Canetti's short texts and aphorisms can be focused as a textual laboratory in which he tries to model a language of death on experimental practices of natural sciences. The miniature series of experiments address the problem of death, not representable in discourses of cultural studies, system theory or history of knowledge, and in doing so, Canetti creates liminal texts at the margins of western concepts of (human) life, science and established textual form.

Modern Radiodiagnostics Technology of Metastasises in Pelvic Lymph Nodes

2017 ◽  
pp. 100-108
Author(s):  
V. N. Diomidova ◽  
O. A. Еfimova
Keyword(s):  
Lymph Node ◽  
Magnetic Resonance ◽  
Lymph Nodes ◽  
Metastatic Lymph Node ◽  
Magnetic Resonance Tomography ◽  
Visual Images ◽  
Pelvic Lymph Nodes ◽  
High Information Content ◽  
Pelvic Cancer ◽  
High Information

The analysis of the diagnostic informativeness of modern radiodiagnosticis methods in determining metastatic lymph node of pelvic cancer gynecological organs according to domestic and foreign publications. At the present stage methods of obtaining visual images pelvic lymph nodes are radiodiagnostics technologies (radiological, ultrasound, magnetic resonance tomography, scintigraphic). The analysis has shown that the researches devoted to diagnostic informational content of modern methods of radiodiagnosis in a differentiation of nature of damage of pelvic lymph nodes aren't enough. According to the literature, the most rational and perspective method for radiodiagnosis metastatics lymph node is a magnetic resonance imaging due to the high information content and thus specificity. At the same time, the continued relevance of further study of methods of radiodiagnostics in order to find the optimal one for the assessment of pelvic lymph nodes.

Analysis of the Complementarity and Clarification Captions Bring to Road Carnage Print Media Images: A Case of The Herald Newspaper

2020 ◽  
Vol 16 (2) ◽  
Author(s):  
Josephat Mutangadura ◽  
J C Mann ◽  
L Odendaal
Keyword(s):  
Print Media ◽  
Visual Image ◽  
Visual Images ◽  
Media Images ◽  
Verbal Form ◽  
The Road ◽  
Communication Activity

Most visuals in media stories either complement or are complemented by captions that accompany them. This study sought to establish the complementary and clarifying effect of captions that go with road carnage images in The Herald newspaper, a local daily published in Zimbabwe. A study was carried out which involved an interview with photo-journalists from the stable and an analysis of three visual images chosen from the publication. It was established that even as a visual, image can stand alone (but not always); it can tell 95 per cent of the story but will only be complete with an accompanying caption. It was also established that captions need not tell the obvious, but provide that which the picture will be lacking to complete the road carnage story. Captions, therefore, help complete the story as regards the when, where, how, who and what of the depiction. The visual image and the caption combine to complete a communication activity as the verbal and non-verbal form of languages. The study recommends that captions should be edited not only by photo-editors and journalists, but also by practising language people.

Improvement of Sports Technique Based on Biomechanical Indicators of Yurchenko Handspring Vault in Women’s Artistic Gymnastics

2017 ◽  
Vol 7 (1) ◽  
pp. 42
Author(s):  
Potop Vladimir ◽  
Dorgan Viorel ◽  
Jurat Valeriu
Keyword(s):  
Biomechanical Analysis ◽  
Experimental Distribution ◽  
National Team ◽  
Postural Orientation ◽  
Scientific Approach ◽  
Algorithmic Analysis ◽  
Methods Of Learning ◽  
Method Of Evaluation ◽  
Complex Coordination ◽  
Movement Structure

The main purpose of this paper is the biomechanical analysis of the kinematic and dynamic indicators of sports technique used in Yurchenko handspring vault by means of the macro methods for exercises learning during the training basic specialization stage. This scientific approach led to the organization of an experimental study, using the research methods as follows: 1. Method of theoretical and methodological analysis of literature related to artistic gymnastics. 2. Method of evaluation of gymnastics exercises sports technique using the algorithmic analysis of the motion. 3. Video computerized method, using” Pinnacle Studio”,” Kinovea” and” Physics ToolKit” programs. 3. Method of movement postural orientation and evaluation of key elements of sports technique with complex coordination of movement structure. 4. Method of linear-branched programming of gymnastics exercises learning and improving. 5. Statistical method, by means of” KyPlot” program. The research was conducted from 2012 to 2014, when gymnasts’ performances were monitored in three national competitions - handspring vaults event; a number of 7 athletes aged 12 to 15 participated in these competitions, all of them members of junior national team of Romania. The results of the research highlighted and identified the kinematic and dynamic characteristics of sports technique key elements of Yurchenko vault in women’s artistic gymnastics. The implementation of the macro methods of learning in young gymnasts’ training contributed to the improvement of sports technique and the effective experimental distribution of the difficult and highly difficult basic vaults.

Improvement of Sports Technique Based on Biomechanical Indicators of Yurchenko Handspring Vault in Women’s Artistic Gymnastics

2017 ◽  
Vol 3 (1) ◽  
pp. 42 ◽  
Author(s):  
Potop Vladimir ◽  
Dorgan Viorel ◽  
Jurat Valeriu
Keyword(s):  
Biomechanical Analysis ◽  
Experimental Distribution ◽  
National Team ◽  
Postural Orientation ◽  
Scientific Approach ◽  
Algorithmic Analysis ◽  
Methods Of Learning ◽  
Method Of Evaluation ◽  
Complex Coordination ◽  
Movement Structure

The main purpose of this paper is the biomechanical analysis of the kinematic and dynamic indicators of sports technique used in Yurchenko handspring vault by means of the macro methods for exercises learning during the training basic specialization stage. This scientific approach led to the organization of an experimental study, using the research methods as follows: 1. Method of theoretical and methodological analysis of literature related to artistic gymnastics. 2. Method of evaluation of gymnastics exercises sports technique using the algorithmic analysis of the motion. 3. Video computerized method, using” Pinnacle Studio”,” Kinovea” and” Physics ToolKit” programs. 3. Method of movement postural orientation and evaluation of key elements of sports technique with complex coordination of movement structure. 4. Method of linear-branched programming of gymnastics exercises learning and improving. 5. Statistical method, by means of” KyPlot” program. The research was conducted from 2012 to 2014, when gymnasts’ performances were monitored in three national competitions - handspring vaults event; a number of 7 athletes aged 12 to 15 participated in these competitions, all of them members of junior national team of Romania. The results of the research highlighted and identified the kinematic and dynamic characteristics of sports technique key elements of Yurchenko vault in women’s artistic gymnastics. The implementation of the macro methods of learning in young gymnasts’ training contributed to the improvement of sports technique and the effective experimental distribution of the difficult and highly difficult basic vaults.

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