Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Visual saliency"”.
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Visual saliency computation for image analysis
Visual saliency computation is about detecting and understanding salient regions and elements in a visual scene. Algorithms for visual saliency computation can give clues to where people will look in images, what objects are visually prominent in a scene, etc. Such algorithms could be useful in a …
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A computational visual saliency model for images.
… an enormous amount of information from the visual world. It is highly difficult to simultaneously process this excessive information for the human brain. Hence the human visual system will selectively process the incoming information by attending only the relevant regions of interest in a …
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Random center- surround approaches for modeling visual saliency
Computational models of visual saliency have been used to detect salient regions and simulate human eye-gaze on images and videos. A majority of the existing approaches are highly parametric in nature. They are specialized to predict either eye-gaze or detect salient regions, but not both …
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Visual Saliency Detection and its Application to Image Retrieval
… of the perceived data. This work deals with visual information, in particular with images. Image analysis and processing is often requires running computationally expensive algorithms. The knowledge of which part of an image is important over other parts allows for reduction of data to be …
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Using the Earth Mover's Distance for perceptually meaningful visual saliency
Visual saliency is one of the mechanisms that guide our visual attention, or where we look. This topic has seen a lot of research in recent years, starting with biologicallyinspired models, followed by the information-theoretic and recently statistical-based models. This dissertation looks at a …
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Image analysis using visual saliency with applications in hazmat sign detection and recognition
<p>Visual saliency is the perceptual process that makes attractive objects "stand out" from their surroundings in the low-level human visual system. Visual saliency has been modeled as a preprocessing step of the human visual system for selecting the important visual information from a scene. We …
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VIP: Finding Important People in Images
… the correlation between importance and visual saliency. We find that not only can we automatically predict the importance of people from purely visual cues, incorporating this predicted importance results in significant improvement in applications such as im2text (generating sentences …
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The Role of Early Recurrence in Improving Visual Representations
… the following four observations. 1) The primate visual system includes two main visual pathways: the dorsal pathway and the ventral pathway; 2) The two pathways respond to different visual features; 3) The neurons of the dorsal pathway conduct visual information faster than that of the neurons of …
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Gaze selection in the real world : finding evidence for a preferential selection of eyes
… the preference for eyes can be explained by visual saliency. It cannot. Chapter 7 compares the selection of eyes to another socially communicative cue, the arrow. The results shed light on a recent controversy in the social attention field, and indicate again that there is a fundamental bias …
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An Examination of the Influence of Landmarks in Human Spatial Navigation Using a Virtual Water Maze
… and landmarks rotated 180°. However, does the visual saliency of these landmarks (e.g. brightness) influence our ability to recall a goal location during navigation? In Experiments 2, 3 & 4, we examined this question. In Experiment 2, participants were trained with a bright landmark near the …
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Saliency in audio and visual signals
This dissertation studies saliency and its applications in audio and visual signals. For each portion of the signal, its saliency means the likelihood of attracting bottom-up attention in the perception process. In computer vision, image saliency is described by local contrasts of features. Each …
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Is it top-down or bottom-up? an evaluation of processes involved in salience and decision making utilising eye-tracking consumer neuroscience research
Consumers are exposed to vast amounts of visual stimuli on an everyday basis which, due to the brain's limited processing capacity results in insufficient allocation of attention. This can be seen in terms of product advertising as well as packaging including labelling. Bottom-up and top-down …
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Ανθρωποκεντρική επεξεργασία και ανάλυση οπτικής πληροφορίας
Το αντικείμενο της παρούσας διδακτορικής διατριβής περιλαμβάνει την μελέτη και ανάλυση της πληροφορίας οπτικών δεδομένων που μπορεί να πραγματοποιηθεί με την αξιοποίηση μηχανισμών επεξεργασίας ανθρωποκεντρικής φύσης. Λαμβάνοντας υπόψιν την αποδεδειγμένη ανωτερότητα του συστήματος όρασης του …
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A computational model of visual attention.
Visual attention is a process by which the Human Visual System (HVS) selects most important information from a scene. Visual attention models are computational or mathematical models developed to predict this information. The performance of the state-of-the-art visual attention models is limited in …
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Computational seismic interpretation using attention models, texture dissimilarity, and learning
… attributes based on texture dissimilarity, visual-attention theory, the modeling of human visual system, and machine learning to quantify changes and highlight geological features in a three-dimensional space. To automate the process of seismic interpretation, we develop …