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We propose a real-time human activity analysis system, where a user's activity can be quantitatively evaluated with respect to a ground truth recording. We use two Kinects to solve the problem of self-occlusion through extracting optimal joint positions using Singular Value Decomposition (SVD) and Sequential Quadratic Programming (SQP). Incremental Dynamic Time Warping (IDTW) is used to compare the...
Short range ad-hoc wireless networks can be used to deliver streaming multimedia for information, entertainment and advertisement purposes. To enable short-range communication between various devices, the Wi-Fi Alliance proposed an extension to the IEEE802.11 Wi-Fi standard called Wi-Fi Peer-to-Peer (P2P). It allows compliant devices to form ad-hoc communication groups without interrupting conventional...
In this paper, we address interesting questions about how feng shui influences house price from a data perspective. First, is feng shui likely to influence house price? Second, how do different feng shui features, e.g., house shape, master bedroom location, and other interior room arrangements, influence the price? Third, can we automatically diagnose the feng shui problems of a house? From a dataset...
The high demand of bandwidth from multimedia applications, specially video applications which consume the great majority of the Internet bandwidth, has caused a challenge for service providers and network operators. On the one hand, the allocation of bandwidth in a fair manner for multimedia users is necessary, so that the total utility of all users is maximized for higher quality of experience. On...
The subsequence-matching operation applied to motion capture data searches in long motion sequences to locate their parts that are similar to a query example. An effective and efficient implementation of such operation is valuable to increase reusability and findability of expensively recorded data in the past. This demonstration paper builds on recent advances in the field of motion-data processing...
This paper extended Stacked Denoising Autoencoder to build a deep neural network which initialized the weight of neural network through the encoder's weight and used Dropout to reduce the error rate in fine-tuning stage. The neural network used the information of students in recent years as input data to train neural network, and predicted the possibility of dropout on the students during the semester...
The computer mouse is the main interaction device for graphical user interfaces. Many attempts have been made to replace it or render it obsolete, ranging from more ergonomically shaped designs to pen-like devices or touch screens. While the latter have opened up the way for completely new interaction designs mainly on mobile devices, PC and laptop users still prefer the computer mouse as a pointing...
With the rapid advances in digital technology, the multimedia documents have been growing ubiquitously. The analysis of this huge repository of multimedia documents requires efficient organization of documents. Multimedia document clustering organizes the multimedia documents with common multimedia topics. The important step of multimedia document clustering is computing the similarity between multimedia...
Query suggestion plays a key role in improving the usability of image search. Textual Query Suggestion, widely used in existing search text-based image retrieval engines, is able to suggest a list of textual query terms based on users' query input. This paper presents a color prediction system dedicated to interactive drawing based image retrieval system on mobile devices. Usually, such systems retrieve...
Data retrieval serves a critical role in the development of multimedia applications. However, due to the exponential growth of multimedia data, high-speed and efficient indexing is becoming more and more difficult than ever. In this paper, we propose a novel approach to speed up the retrieval process by adopting a distributed computing paradigm through the Apache Spark framework. Utilizing search...
When regarding physicians' tremendously packed timetables, it comes as no surprise that they start managing even critical situations hastily in order to cope with the high demands laid out for them. Apart from treating patients' conditions they as well are required to perform time-consuming administrative tasks, including post-surgery video analyses. Concerning documentation of minimally invasive...
Current live eLearning systems enable remote students to view the teaching environment comprising of several information sources such as the teacher and the teaching aids. These information sources are presented as individual video and audio elements. As a result, spatial connections between these elements, such as the teacher using hand gestures to point to an area on the screen, become meaningless...
Human action recognition of depth sensors has drawn wide attentions in computer vision and multimedia processing areas. In contrast to simple periodic actions, irrelevant actions or sharing sub-actions between different classes of two-person non-periodic interactions make this task challenging. This paper presents heterogeneous features fusion with Collaborative Representation (CR) to address this...
Recommendation of media objects, such as audio and video clips, has been there for a while. Most user interfaces include a list of favourites or most popular media objects. On the other hand, recommendation of multimedia devices is limited to shopping websites. With the evolution of IoT, however, users these days are surrounded by many interconnected devices that can be used to accomplish the same...
Video summarization is an important multimedia task for applications such as video indexing and retrieval, video surveillance, human-computer interaction and video "storyboarding". In this paper, we present a new approach for automatic summarization of video collections that leverages a structured minimum-risk classifier and efficient submodular inference. To test the accuracy of the predicted...
Video shot boundary detection is a fundamental step towards video information processing in e-learning scenarios. In the field of shot boundary detection, there still exists difficulty in choosing suitable thresholds for different videos, and empirical thresholds usually lead to low precision. Thus, we propose an original method to generate video-based threshold which is calculated by video itself...
As of February 2014 there were around 10 million registered user for massive open online courses(MOOCS) in about 1500 courses. One of the many reasons for such a huge user base is the advancements in the media streaming and storage technologies. Multimedia has emerged as a powerful and expressive medium for presenting information. However, according to a study, the average completion of MOOCS is around...
Most modern keyboard-based computer systems cannot be operated without pointing devices such as mice, trackballs or touch interfaces. They hence have two input modes: keyboard and pointing. A pointing device's purpose is to convey the user's focus of attention to the computer in order to connect actions like clicking or moving the mousepointer to specific areas of the display such as buttons or input...
Application mobility is the paradigm where users can move parts of their running applications across multiple heterogeneous devices in a seamless manner. This mobility involves dynamic context changes of hardware, network resources, user environment and user preferences. State-of-the-art adaptive applications adapt in multiple ways to a subset of scenarios in application mobility, however, adaptation...
Online, interactive textbooks utilizing multimedia are continually gaining popularity in computer science courses. We present a system for automated analysis that can harness the power of these textbook and practice systems to provide information about high-level conceptual understanding to educators. The system presents a visualization using data logged by an interactive textbook to provide numeric...
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