Principles of Binocular Stereoscopic Imaging

2014 ◽  
pp. 38-58
Author(s):  
Geoff Ogram
Keyword(s):  
Visual Perception ◽  
Depth Perception ◽  
Visual Cues ◽  
Stereoscopic Images ◽  
Stereoscopic Imaging ◽  
Recorded Image

The relation between visual perception and the recorded image is discussed in this chapter, emphasising the historical growth of the understanding of depth perception and its visual cues. The stereoscopic principle is explained in detail, and figures are given for comfortable viewing of stereoscopic images.

scholarly journals Principles of Binocular Stereoscopic Imaging

Ophthalmology ◽  
2018 ◽  
pp. 78-97
Author(s):  
Geoff Ogram
Keyword(s):  
Visual Perception ◽  
Depth Perception ◽  
Visual Cues ◽  
Stereoscopic Images ◽  
Stereoscopic Imaging ◽  
Recorded Image

The relation between visual perception and the recorded image is discussed in this chapter, emphasising the historical growth of the understanding of depth perception and its visual cues. The stereoscopic principle is explained in detail, and figures are given for comfortable viewing of stereoscopic images.

scholarly journals Camouflage, communication and thermoregulation: lessons from colour changing organisms

2008 ◽  
Vol 364 (1516) ◽  
pp. 463-470 ◽  
Author(s):  
Devi Stuart-Fox ◽  
Adnan Moussalli
Keyword(s):  
Visual Perception ◽  
Visual Processing ◽  
Comparative Studies ◽  
Visual Cues ◽  
Colour Change ◽  
Visual Environment ◽  
Multiple Predators ◽  
Physiological Colour Change ◽  
Colour Patterns ◽  
Insight Into

Organisms capable of rapid physiological colour change have become model taxa in the study of camouflage because they are able to respond dynamically to the changes in their visual environment. Here, we briefly review the ways in which studies of colour changing organisms have contributed to our understanding of camouflage and highlight some unique opportunities they present. First, from a proximate perspective, comparison of visual cues triggering camouflage responses and the visual perception mechanisms involved can provide insight into general visual processing rules. Second, colour changing animals can potentially tailor their camouflage response not only to different backgrounds but also to multiple predators with different visual capabilities. We present new data showing that such facultative crypsis may be widespread in at least one group, the dwarf chameleons. From an ultimate perspective, we argue that colour changing organisms are ideally suited to experimental and comparative studies of evolutionary interactions between the three primary functions of animal colour patterns: camouflage; communication; and thermoregulation.

scholarly journals An Evaluation of Visual Perception Visual Memory Cognitive Functions and Emotional Status among Genders in Elderly Subjects

2021 ◽  
pp. 330-336
Author(s):  
A. Ruhina ◽  
G. Sridevi
Keyword(s):  
Gender Differences ◽  
Visual Perception ◽  
Depth Perception ◽  
Cognitive Functions ◽  
Test Performance ◽  
Visual Memory ◽  
Cognitive Test ◽  
Emotional Status ◽  
Cognitive Test Performance ◽  
Picture Identification

Background: Gender differences in visual memory and perception and cognitive test performance have been significantly influenced by factors like sex Objective: The current study aimed to evaluate the gender differences in patterns of cognitive test performance and visual perception in healthy elderly individuals. Methods: Cognitive functions and visual perception was analyzed using clock drawing test and picture identification test in 20 elderly men and women (10 each) and their emotional status was assessed using depression scale Results: The results revealed that females had a better visual memory and depth perception compared to men and the value was statistically significant at p<0.05. Females performed better than men on tests of Picture identification and were better in phonemic verbal skills compared to male men and the value was statistically significant at p<0.05 Conclusion: The present study concluded an innovative finding that women were better in their performance related to visual depth perception and cognitive functions.

scholarly journals PICTURES OF ME: POSSIBILITIES OF SHAPING OUR BODY IMAGE THROUGH VIRTUAL REALITY / MANO PORTRETAI: KŪNO ATVAIZDŲ APIFORMINIMO GALIMYBĖS VIRTUALIOJOJE REALYBĖJE

2012 ◽  
Vol 5 (1) ◽  
pp. 1-10
Author(s):  
Mateusz Woźniak
Keyword(s):  
Body Image ◽  
Virtual Reality ◽  
Visual Perception ◽  
Visual System ◽  
Visual Cues ◽  
Virtual Space ◽  
Brain System ◽  
Adaptive Representation ◽  
Sensory Motor ◽  
Human Embodiment

Brain system responsible for visual perception has been extensively studied. Visual system analyses a wide variety of stimuli in order to let us create adaptive representation of surrounding world. But among vast amounts of processed information come visual cues describing our own bodies. These cues constitute our so-called body-image. We tend to perceive it as a relatively stable structure but recent research, especially within the domain of virtual reality, introduces doubts to this assumption. New problems appear concerning perceiving others’ and our own bodies in virtual space and how does it influence our experience of ourselves and true reality. Recent studies show that how we see our avatars influence how we behave in artificial worlds. It introduces a brand new way of thinking about human embodiment. Virtual reality allows us to transcend beyond the casual visual-sensory-motor integration and create new ways to experience embodiment, temporarily replacing permanent body image with almost any imaginable digital one. Santrauka Smegenų sistema, atsakinga už vizualųjį suvokimą, yra nuodugniai ištirta. Vizualioji sistema analizuoja plačią akstinų įvairovę, padedančią mums sukurti adaptuotą supančio pasaulio reprezentaciją. Tačiau tarp didelio kiekio apdorotos informacijos kyla vizualiosios užuominos, atvaizduojančios mūsų pačių kūnus. Šios užuominos steigia vadinamąjį kūną-atvaizdą. Mes linkstame jį suvokti kaip sąlygiškai stabilią struktūrą, tačiau dabartiniai tyrimai, o ypač tie, kurie vykdomi virtualiojoje realybėje, tokia prielaida verčia suabejoti. Kyla naujų problemų, suvokiant kitų ir mūsų pačių kūnus virtualiojoje erdvėje bei kokios įtakos tai turi mūsų pačių savęs ir tikrosios realybės patyrimui. Nūdieniai tyrinėjimai atskleidžia, kad tai, kaip mes suvokiame savąjį kūniškumą, turi įtakos tam, kaip elgiamės dirbtiniuose pasauliuose. Tai steigia visiškai naują žmogiškojo kūniškumo suvokimo būdą. Virtualioji realybė leidžia mums peržengti paprastą vizualinęjutiminę-motorinę integraciją ir kurti naujus būdus patirti kūniškumą, palaipsniui pakeičiant ilgalaikį kūno atvaizdą bet kokiu įsivaizduojamu skaitmeniniu.

On the Visual Cues Contributing to Pictorial Depth Perception

2008 ◽  
Vol 26 (1) ◽  
pp. 69-92 ◽  
Author(s):  
Norman D. Cook ◽  
Asami Yutsudo ◽  
Naoki Fujimoto ◽  
Mayu Murata
Keyword(s):  
Depth Perception ◽  
Visual Cues ◽  
Pictorial Depth

scholarly journals Toward a Quality Predictor for Stereoscopic Images via Analysis of Human Binocular Visual Perception

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 69283-69291 ◽  
Author(s):  
Yun Liu ◽  
Fanhui Kong ◽  
Zhizhuo Zhen
Keyword(s):  
Visual Perception ◽  
Stereoscopic Images

Multimedia Sensory Cue Processing in the FIVIS Simulation Environment

2012 ◽  
pp. 217-233 ◽  
Author(s):  
Rainer Herpers ◽  
David Scherfgen ◽  
Michael Kutz ◽  
Jens Bongartz ◽  
Ulrich Hartmann ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Depth Perception ◽  
Visual Cues ◽  
Sensory Information ◽  
Visual Depth ◽  
Safety Education ◽  
Laboratory Environment ◽  
Sensory Cue ◽  
Cue Processing

The FIVIS simulator system addresses the classical visual and acoustical cues as well as vestibular and further physiological cues. Sensory feedback from skin, muscles, and joints are integrated within this virtual reality visualization environment. By doing this it allows for simulating otherwise dangerous traffic situations in a controlled laboratory environment. The system has been successfully applied for road safety education applications of school children. In further research studies it is applied to perform multimedia perception experiments. It has been shown, that visual cues dominate by far the perception of visual depth in the majority of applications but the quality of depth perception might depend on the availability of other sensory information. This however, needs to be investigated in more detail in the future.

2D and 3D Visual Attention for Computer Vision

2016 ◽  
pp. 1-44
Author(s):  
Vincent Ricordel ◽  
Junle Wang ◽  
Matthieu Perreira Da Silva ◽  
Patrick Le Callet
Keyword(s):  
Computer Vision ◽  
Visual Perception ◽  
Visual Attention ◽  
Visual System ◽  
Computational Modeling ◽  
Depth Perception ◽  
Human Visual System ◽  
Visual Importance ◽  
2D And 3D ◽  
The Impact

Visual attention is one of the most important mechanisms deployed in the human visual system (HVS) to reduce the amount of information that our brain needs to process. An increasing amount of efforts has been dedicated to the study of visual attention, and this chapter proposes to clarify the advances achieved in computational modeling of visual attention. First the concepts of visual attention, including the links between visual salience and visual importance, are detailed. The main characteristics of the HVS involved in the process of visual perception are also explained. Next we focus on eye-tracking, because of its role in the evaluation of the performance of the models. A complete state of the art in computational modeling of visual attention is then presented. The research works that extend some visual attention models to 3D by taking into account of the impact of depth perception are finally explained and compared.

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