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ConCIENCIA Estadística is a digital educational material proposed as support for the development of the homonymous workshop, organized in the framework of the Project for Improvement of Training in Exact and Natural Sciences in the Secondary School (Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa). This material is described in this paper, offering technical details of its...
Visual attention models (VAMs) have proved useful in various multimedia applications such as video encoding, interface design, and user behavior prediction. However, existing VAMs are not generalizable enough to be utilized in all multimedia applications implying that in each application there exist some unique factors which drive the user attention. Application agnostic VAMs rely on video and image...
Recently the quick development of virtual technology has made technology-aided learning more versified and education revolution more advanced. With visual and audio stimulation, technology-aided teaching can make student pay more attention than traditional way. Currently the way of learning idioms in elementary school is of more traditional way, which, without multiple interactions with students,...
Effect of adaptive threshold on shot boundary detection performance is analyzed in this paper, where the threshold is used to determine whether a target frame is a shot boundary or not in a broadcasting video content. Adaptive threshold is calculated using input threshold and visual similarities of adjacent frames of a target frame. The experimental results show that application of adaptive threshold...
LDA-based topic analysis is widely used in text mining field. Considering the large scale of web documents, document clusters are usually analyzed instead of single ones. However, the existing visualizations of LDA-based clustering do not intuitively present contents of hot topics while maintaining the relationships between the topics and the document clusters. In this paper, we propose an integrated...
No-reference objective stereo video quality assessment plays an important role in stereo video content production, especially to the sense of 2D-to-3D video conversion. The main problem needed to consider when designing an objective quality assessment model is to make the assessment result close to human perception. In this paper, a no-reference objective stereo video quality assessment method is...
In this talk we seek to provide insight on the general topic of visual soft biometrics (gender, age, ethnicity, etc.). First, we present a new refined definition of soft biometrics, emphasizing on the aspect of human compliance, and then proceed to identify candidate traits that accept this novel definition. Second, we introduce some image processing techniques related to the estimation of some traits...
In the long term research of visual attention, various computational models have been proposed. However, most of those works do not take audio into consideration. In practice, visual signals often come along with audio. Therefore, it is natural to investigate the influence of audio on visual attention. In this paper, we focus on the problem of when will audio influence visual attention during video...
This paper presents the influence of perceived texture regularity on the visual quality of textures that are synthesized through parametric and non-parametric approaches. It is shown through subjective testing that textures with different degrees of perceived regularity exhibit different degrees of vulnerability to texture synthesis artifacts. The paper also proposes a method for adaptively selecting...
In this study, the effect of pure synchronous and asynchronous transmission delay was examined in an interactive videotelephony setting. It was found that the conversational quality rated by participants of the study was clearly dependant on the tested conditions. This outcome can to some extend be ascribed to the used task which facilitated the usage of the visual channel for social interaction....
Subjective quality tests give important information about the user's perception on the quality of an audio or video signal. These tests are helpful but usually lack information about the user's cognitive state. This might be crucial when consuming a service, as lower quality services may lead to a less frequent use. Therefore, physiological measures have become more popular in the domain of quality...
A first step towards creating automatic measures of image aesthetic appeal is understanding its appreciation via subjective testing. Nevertheless, reliably setting up such tests appears to be challenging, as aesthetic appeal is proven to be influenced by a number of subjective factors. In this paper we investigate four scale types for aesthetic appeal rating and assess their ability to provide general...
Due to the recent advances in ultra high definition (UHD) displays, UHD TV may replace HD TV in a near future. However, little is known about the effect of UHD content on human visual perception, specifically, on human visual attention, viewing strategies, and visual saliency. To help studying these properties of the human visual system and their dynamics when HD content is replaced with UHD content,...
When users give ratings in subjective Quality of Experience experiments, they may experience a lack of confidence in assigning a score to a stimulus. This results in invalid votes that might need to be removed from the acquired data. We show results from a subjective video quality experiment in which we measured the rating times and asked observers for their confidence, in addition to just the quality...
With the aim of improving the immersive experience of the end user, High Dynamic Range (HDR) imaging has been gaining popularity. Therefore, proper validation and performance benchmarking of HDR processing algorithms is a key step towards standardization and commercial deployment. A crucial component of such validation studies is the selection of a challenging and balanced set of source (reference)...
In this work the effect of reproduction setup on the perception of natural scene attributes was studied. Discrimination of reproduced real-world scenes in movement, openness and noisiness was inspected between an immersive large reproduction setup and a non-immersive small reproduction setup. The results show decreased sensitivity for movement discrimination and increased sensitivity for noisiness...
The overwhelming proliferation of digital images on media sharing webs have triggered the requirement of effective tools to retrieve images of interest using semantic concepts. Due to the semantic gap between low-level visual features and high-level semantic concepts of an image, however, the performances of many existing automatic image annotation algorithms are not so satisfactory. In this paper,...
Technological developments and increases of the copyright infringements have led a demand on developing automatic video copy detection systems. Generally, for this task, even if visual local descriptors are preferred, descriptors should be indexed according to make an effective search. In this work, performance of three indexing methods which are defined in literature is compared for video copy detection...
This study investigates the metrics for spatial audio quality of experience (QoE) prediction, particularly considering the existence of video whose viewpoint may not match that of the auditory scene. Subjective tests were conducted for 5.1-channel audio quality evaluation following a previously developed testing and prediction methodology, with the addition of accompanying video cues and with the...
This research makes innovative use of technology to enhance students' learning experiences in Project Work, by providing interaction through technology to make individual and group thinking more visible. Technology has evolved significantly, which provides opportunities to test new methods of teaching. The idea is to use technology creatively to deconstruct and redefine the classroom, in order to...
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