The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Exhaustive scanning is a popular scheme for the detection of visual objects in images. In this paper, we propose a polyline-driven detection scheme with an application to stop sign detection. Given an input image, we first extract basic polylines, including line segments and 2-piece polylines, from its edge image. Line segments are then used to generate a set of hypothesis boxes, i.e., a space of...
As an important research area in image analysis and computer vision, fusion of infrared and visible images aims at delivering an effective combination of image information from different sensors. Since the final fused image is the demonstration of fusion process, it should reveal both source images' vital information distinctly. To achieve this purpose, an image fusion method based on multiscale hybrid...
In present study, we used functional magnetic resonance imaging (fMRI) to explore the neural mechanism of how a task-irrelevant sound modulates the effects of simultaneous visual cue on visual discrimination. Behavioral results showed that response to bimodal audiovisual stimulus was significantly slower when an audiovisual stimulus was accompanied by a simultaneous visual cue than it was not accompanied...
Many studies have shown that temporal asynchrony of visual-auditory stimuli can influence the integration between visual and auditory modality, however, the multisensory mechanisms of asynchronous inputs were not well understood. To investigate the effect of temporal asynchrony on audiovisual integration, we measured event-related potentials (ERPs) and behavior in human subjects. In this study, visual...
Using functional magnetic resonance imaging (fMRI) or positron emission tomography (PET), much knowledge has been gained in understanding how the brain is activated during controlled experiments of language tasks in educated healthy subjects and in uneducated healthy subjects. While previous studies have compared performance between alphabetic subjects, few data were about Chinese-speaking individuals...
In order to study the impact of 3D subtitle characteristics on visual comfort, this paper included two experiments. In experiment 1, the study was on the impact of 3D subtitle fonts on visual comfort. The results showed the 3D subtitle fonts could not reduce the visual comfort. The subtitles with Official Script font, NSimSum font and bold font had no significant differences on visual comfort. And...
The study investigated how the depth of 3D subtitles impacted the viewers' 3D experience. The disparities of the subtitles were chosen from 7.56', 15.12', 22.32', -7.56', -15.12' and -22.32'. The results showed that subjects felt more fatigue when seeing subtitles with uncrossed disparities than that with crossed disparities. Regardless of using crossed disparities or uncrossed disparities, the subtitles...
Nowadays, P300-speller has become the most popular Brain-computer interface (BCI) which can provide a new communication path between patients suffered amyotrophic lateral sclerosis (ALS) and the outside world. Many efforts have been done to improve the speed and accuracy of the P300-speller. Recently, some researchers improve the performance of the P300-speller through replacing the flashing rows...
In everyday life, our brains integrate various kinds of information from different modalities to perceive our complex environment. Temporal synchrony of audiovisual stimuli is required for audiovisual integration. Many studies have shown that temporal asynchrony of visual-auditory stimuli can influence the interaction between visual and auditory stimulus, however, the multisensory mechanisms of asynchrony...
Crossmodal spatial integration between auditory and visual stimuli is a common phenomenon in space perception. In the present study, the effects of spatial location on bisensory audiovisual integration in horizontal meridian were investigated. The behavior results of audiovisual integration were compared at −30°, 0° and 30° on horizontal direction. Our results showed that responses to audiovisual...
Two experiments were conducted to explore the different effects of visual/auditory attention on bisensory audiovisual integration using behavioral and electrophysiological measures. Subjects were asked to attend visual stimulus in experiment1, but to attend auditory stimulus in experiment2. In each experiment, unisensory visual, unisensory auditory, and bisensory audiovisual stimuli were presented...
Integration of information from multiple senses is fundamental to perception and cognition, but the neural activity of multimodal audiovisual integration remains unclear. This study used event-related potentials (ERPs) to demonstrate that onset synchronous task-irrelevant auditory stimuli affect the audiovisual integration. The behavioral results showed that the responses to audiovisual target stimuli...
The technology of Human Machine Interface (HMI) mainly investigate about how to use machines in a more humanized way so that the communication between human and the machine could become more harmonic and natural. Previous studies indicate that there is an integration area in the human brain for audiovisual information processing. Although machines also possess mechanism for audiovisual processing,...
Appearances of objects lie in high-dimensional spaces. For a given recognition task, feature selection aims to select most effective features in order to reduce the recognition cost and improve recognition accuracy. Feature selection can be achieved by a bottom-up scheme, e.g., using spatial information, or a top-down scheme, e.g., using class information. In this paper, we propose a model to integrate...
An event-related potential study was conducted to make clear that how picture-word delayed matching encoding affects upon episodic retrieval, and to further investigate the relationship between encoding and episodic retrieval by ERP source analysis using the LORATA method (low resolution electromagnetic tomography, via Curry V6.0). The experiment used learning and recognition paradigm. The results...
Emergency decision is a key step in a disaster relief, which determines the direct response results and guarantees people's lives and property safety. How to make an emergency decision timely and effectively depends on a comprehensive understanding of disaster situations, as well as an accurate analysis of rescue plans. Therefore, an emergency planning system is designed in this paper, which adopts...
The clinical diagnosis can detect the presence of brain disease once significant neuronal disruption has occurred. Early clinical detection of neuropsychological disorder lacks the unification standards. The aim of this study was to describe the neural mechanism of audiovisual interaction in healthy subjects by combining behavior-based methods (neuropsychological testing) and event-related potentials...
We applied behavioral and event-related potential (ERP) measures to study the multisensory interactions of audiovisual stimuli presented at different locations in an auditory-attention task in which an irrelevant visual stimulus occasionally accompanied the auditory stimulus. A stream of visual (V), auditory (A), spatially congruent audiovisual (AVCon), and spatially incongruent audiovisual (AVInc)...
The influence of spatial congruency on audiovisual interaction in a visual-attention task in which only the visual segment of a bimodal audiovisual stimulus was required to attend was investigated using behavioral and electrophysiological measures in humans. The behavioral results showed that the responses to audiovisual target stimuli were faster than that to unimodal visual target stimuli. Moreover,...
In this study, audiovisual integration for only attending visual component of bimodal audiovisual stimulus was investigated in humans using behavioral and electrophysiological measures. The aim was to explore human's information integration mechanism and give theoretic basic for traffic safety. Event-related potentials (ERPs) to auditory (A), visual (V) and bimodal audiovisual (AV) stimuli were recorded...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.