Towards a novel approach to multimedia data mixed fragmentation

2009 ◽  
Author(s):  
Richard Chbeir ◽  
Dominique Laurent
Keyword(s):  
Multimedia Data ◽  
Novel Approach ◽  
Mixed Fragmentation

3D Real-Time Reconstruction Approach for Multimedia Sensor Networks

2010 ◽  
Vol 1 (4) ◽  
pp. 61-77
Author(s):  
Ahmed Mostefaoui ◽  
Benoit Piranda
Keyword(s):  
Sensor Networks ◽  
3D Reconstruction ◽  
Real Time ◽  
Multimedia Data ◽  
Sensor Nodes ◽  
Multimedia Sensor Networks ◽  
Network Bandwidth ◽  
Descriptive Information ◽  
Novel Approach ◽  
Technological Advances

Multimedia sensor networks have emerged due to the tremendous technological advances in multimedia hardware miniaturization and the application potential they present. However, the time sensitive nature of multimedia data makes them very problematic to handle, especially within constrained environments. In this paper, the authors present a novel approach based on continuous 3D real time reconstruction of the monitored area dedicated for video surveillance applications. Real-time 3D reconstruction allows an important network bandwidth reduction in context to sensor nodes sending descriptive information to the fusion server instead heavy video streams. Each node has to support additional processing in order to extract this descriptive information in real-time, which results in video sensors capturing tasks, data analysis, and extraction of features needed for 3D reconstruction. In this paper, the authors focus on the design and implementation of such sensor node and validate their approach through real experimentations conducted on a real video sensor.

COVER NOISE INTERFERENCE SUPPRESSION IN MULTIMEDIA DATA HIDING

2005 ◽  
Vol 05 (01) ◽  
pp. 191-207
Author(s):  
LITAO GANG ◽  
ALI N. AKANSU
Keyword(s):  
Data Hiding ◽  
General Problem ◽  
Empirical Data ◽  
Multimedia Data ◽  
Optimal Detection ◽  
Interference Rejection ◽  
Simulation Studies ◽  
Direct Sequence ◽  
Noise Interference ◽  
Novel Approach

In this paper, we investigate the general problem of data hiding and propose an approach for effective cover noise interference rejection in oblivious applications. We first evaluate the performance in the commonly used direct sequence modulation approach where a low-power signal is embedded into the original cover signal. The optimal detection is derived and its performance is analyzed. Second, we study a novel approach in oblivious data hiding and evaluate its performance and compare it with existing algorithms. Both simulation studies and empirical data hiding results validate its efficiency in the multimedia oblivious applications.

SITUATION-DEPENDENT METAPHOR FOR PERSONAL MULTIMEDIA INFORMATION

1999 ◽  
Vol 09 (06) ◽  
pp. 725-743 ◽  
Author(s):  
K. PRIYANTHA HEWAGAMAGE ◽  
MASAHITO HIRAKAWA ◽  
TADAO ICHIKAWA
Keyword(s):  
Theoretical Foundation ◽  
Personal Information ◽  
Low Cost ◽  
Contextual Information ◽  
Multimedia Data ◽  
Information Organization ◽  
Digital Data ◽  
Computing Environment ◽  
Novel Approach ◽  
Mobile Computing Environment

Recently available low-cost personal computers and mechanisms to produce digital data have caused a staggering increase in the amount of multimedia data acquired by the user. Hence, the user's personal information space that consists of a large collection of files, may distribute over a number of computers. Situation-dependent metaphor methodology, described in this paper, provides a novel approach to managing such a collection with respect to the context of user's interactions with data. By considering the mobile computing environment, the physical location, time periods and activities are primarily used in modeling the situation metaphor. Sensors and software agents are used in capturing contextual factors automatically. Situation Space describes the theoretical foundation for the situation metaphor based information organization. We also presents our prototype engineered model, Situated Information Filing and Filtering (SIFF), to demonstrate the situation-dependent data management. The SIFF provides the framework for organizing the personal information and developing applications that require contextual information.

3D Real-Time Reconstruction Approach for Multimedia Sensor Networks

2012 ◽  
pp. 321-339
Author(s):  
Ahmed Mostefaoui ◽  
Benoit Piranda
Keyword(s):  
Sensor Networks ◽  
3D Reconstruction ◽  
Real Time ◽  
Multimedia Data ◽  
Sensor Nodes ◽  
Multimedia Sensor Networks ◽  
Descriptive Information ◽  
Novel Approach ◽  
Constrained Environments ◽  
Additional Processing

Multimedia sensor networks have emerged due to the tremendous technological advances in multimedia hardware miniaturization and the application potential they present. However, the time sensitive nature of multimedia data makes them very problematic to handle, especially within constrained environments. In this paper, the authors present a novel approach based on continuous 3D real time reconstruction of the monitored area dedicated for video surveillance applications. Real-time 3D reconstruction allows an important network bandwidth reduction in context to sensor nodes sending descriptive information to the fusion server instead heavy video streams. Each node has to support additional processing in order to extract this descriptive information in real-time, which results in video sensors capturing tasks, data analysis, and extraction of features needed for 3D reconstruction. In this paper, the authors focus on the design and implementation of such sensor node and validate their approach through real experimentations conducted on a real video sensor.

scholarly journals A Novel Approach for Optimal Multimedia Data Distribution in Mobile Cloud Computing

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Pham Phuoc Hung ◽  
Mohammad Aazam ◽  
Tien-Dung Nguyen ◽  
Eui-Nam Huh
Keyword(s):  
Cloud Computing ◽  
Mobile Computing ◽  
Mobile Cloud Computing ◽  
Data Communication ◽  
Multimedia Data ◽  
Mobile Cloud ◽  
User Mobility ◽  
New Paradigm ◽  
Novel Approach ◽  
Desktop Computers

With the integration of mobile computing and cloud computing, more diverse services can be provided to the users, supporting the mobility feature of mobile computing along with the power of cloud computing. This new paradigm still faces challenges, especially in terms of performance. When it comes to multimedia data communication, thin clients (such as smart phones and tablets) suffer because of performance and power constraints. Previously done studies have trivially addressed this problem. Therefore, in our paper, we present a framework in which thick clients (laptop or desktop computers) are incorporated into mobile cloud paradigm with attention paid to user mobility. Its objective is to optimize the distribution of multimedia content between the cloud and the thin clients. Our work comes up with both numerical analysis and simulation to justify the validity and the effectiveness of the proposal approach.

A Novel Approach to Store an Image in QR Code

2021 ◽  
Vol 12 (2) ◽  
pp. 3425-3435
Author(s):  
Nuchu Yeswanth Surya Srikar, Et. al.
Keyword(s):  
Image Data ◽  
Multimedia Data ◽  
Qr Code ◽  
Two Dimensional ◽  
Qr Codes ◽  
Black And White ◽  
Quick Response Code ◽  
Novel Approach ◽  
Item Data ◽  
Machine Readable

: Quick Response Code is a machine-readable, two-dimensional barcode consisting of an array of black and white squares which can be scan quickly by any smartphone. It allows encoding over 4000 pulse characters in a two-dimensional barcode. It is used to store a small amount of information like web URL, item data, phone numbers and multimedia data. Due to restricted size in it, QR codes are presently limited in the extent to store the data. But the data in image format uses more space, if you want to store image data in QR code you must enlarge the storage capacity of QR code. In this paper, we propose a very simple form of lossy data compression, in which runs of data is dividing into blocks of equals size. The entire block is stored as a character rather than as the original run with generic HashMap which makes more robust and provides all sorts of security. Finally, our results are compared with other techniques to differentiate the optimality, efficiency of the new technique for producing optimal QR codes.

Copper-dependent ATP7B up-regulation drives the resistance of TMEM16A-overexpressing head-and-neck cancer models to platinum toxicity

2019 ◽  
Vol 476 (24) ◽  
pp. 3705-3719 ◽  
Author(s):  
Avani Vyas ◽  
Umamaheswar Duvvuri ◽  
Kirill Kiselyov
Keyword(s):  
Oxidative Stress ◽  
Head And Neck ◽  
Transcriptional Activation ◽  
Platinum Resistance ◽  
Mrna Levels ◽  
Strong Positive Correlation ◽  
Platinum Compounds ◽  
Copper Chelation ◽  
Novel Approach ◽  
Cancer Models

Platinum-containing drugs such as cisplatin and carboplatin are routinely used for the treatment of many solid tumors including squamous cell carcinoma of the head and neck (SCCHN). However, SCCHN resistance to platinum compounds is well documented. The resistance to platinum has been linked to the activity of divalent transporter ATP7B, which pumps platinum from the cytoplasm into lysosomes, decreasing its concentration in the cytoplasm. Several cancer models show increased expression of ATP7B; however, the reason for such an increase is not known. Here we show a strong positive correlation between mRNA levels of TMEM16A and ATP7B in human SCCHN tumors. TMEM16A overexpression and depletion in SCCHN cell lines caused parallel changes in the ATP7B mRNA levels. The ATP7B increase in TMEM16A-overexpressing cells was reversed by suppression of NADPH oxidase 2 (NOX2), by the antioxidant N-Acetyl-Cysteine (NAC) and by copper chelation using cuprizone and bathocuproine sulphonate (BCS). Pretreatment with either chelator significantly increased cisplatin's sensitivity, particularly in the context of TMEM16A overexpression. We propose that increased oxidative stress in TMEM16A-overexpressing cells liberates the chelated copper in the cytoplasm, leading to the transcriptional activation of ATP7B expression. This, in turn, decreases the efficacy of platinum compounds by promoting their vesicular sequestration. We think that such a new explanation of the mechanism of SCCHN tumors’ platinum resistance identifies novel approach to treating these tumors.

Collecting Words: A Clinical Example of a Morphology-Focused Orthographic Intervention

2020 ◽  
Vol 51 (3) ◽  
pp. 544-560 ◽  
Author(s):  
Kimberly A. Murphy ◽  
Emily A. Diehm
Keyword(s):  
Written Language ◽  
Morphological Knowledge ◽  
English Orthography ◽  
Word Level ◽  
Novel Approach ◽  
Language Pathology ◽  
The One ◽  
Critical Intervention ◽  
Reading And Spelling ◽  
Reading And Spelling Difficulties

Purpose Morphological interventions promote gains in morphological knowledge and in other oral and written language skills (e.g., phonological awareness, vocabulary, reading, and spelling), yet we have a limited understanding of critical intervention features. In this clinical focus article, we describe a relatively novel approach to teaching morphology that considers its role as the key organizing principle of English orthography. We also present a clinical example of such an intervention delivered during a summer camp at a university speech and hearing clinic. Method Graduate speech-language pathology students provided a 6-week morphology-focused orthographic intervention to children in first through fourth grade ( n = 10) who demonstrated word-level reading and spelling difficulties. The intervention focused children's attention on morphological families, teaching how morphology is interrelated with phonology and etymology in English orthography. Results Comparing pre- and posttest scores, children demonstrated improvement in reading and/or spelling abilities, with the largest gains observed in spelling affixes within polymorphemic words. Children and their caregivers reacted positively to the intervention. Therefore, data from the camp offer preliminary support for teaching morphology within the context of written words, and the intervention appears to be a feasible approach for simultaneously increasing morphological knowledge, reading, and spelling. Conclusion Children with word-level reading and spelling difficulties may benefit from a morphology-focused orthographic intervention, such as the one described here. Research on the approach is warranted, and clinicians are encouraged to explore its possible effectiveness in their practice. Supplemental Material https://doi.org/10.23641/asha.12290687

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