Multimedia Research Articles

Video compression based on zig-zag 3D DCT and run-length encoding for multimedia communication systems

PurposeWith the advent of technology, a huge amount of data is being transmitted and received through the internet. Large bandwidth and storage are required for the exchange of data and storage, respectively. Hence, compression of the data which is to be transmitted over the channel is unavoidable. The main purpose of the proposed system is to use the bandwidth effectively. The videos are compressed at the transmitter’s end and reconstructed at the receiver’s end. Compression techniques even help for smaller storage requirements.Design/methodology/approachThe paper proposes a novel compression technique for three-dimensional (3D) videos using a zig-zag 3D discrete cosine transform. The method operates a 3D discrete cosine transform on the videos, followed by a zig-zag scanning process. Finally, to convert the data into a single bit stream for transmission, a run-length encoding technique is used. The videos are reconstructed by using the inverse 3D discrete cosine transform, inverse zig-zag scanning (quantization) and inverse run length coding techniques. The proposed method is simple and reduces the complexity of the convolutional techniques.FindingsCoding reduction, code word reduction, peak signal to noise ratio (PSNR), mean square error, compression percent and compression ratio values are calculated, and the dominance of the proposed method over the convolutional methods is seen.Originality/valueWith zig-zag quantization and run length encoding using 3D discrete cosine transform for 3D video compression, gives compression up to 90% with a PSNR of 41.98 dB. The proposed method can be used in multimedia applications where bandwidth, storage and data expenses are the major issues.

PageRank Topic Finder based Algorithm for Multimedia Resources in Preschool Education.

In traditional preschool education, it is time-consuming and laborious to acquire effective materials by using artificial search method. However, with the development of Internet technology, a variety of preschool education institutions or individuals have released their own preschool education resources on the Internet. At present, multimedia technology has been popularized in many schools, and it plays a more and more significant role in teaching. In preschool education teaching, teachers use multimedia resources not only conducive to improve children's learning efficiency but also make the teaching quality from the whole to a higher level. However, some kindergarten teachers rely too much on multimedia in teaching and do not effectively combine it with traditional teaching methods. Sometimes they even use video and related multimedia teaching resources throughout the class, which makes preschool children lack knowledge and knowledge. Therefore, this paper designs a multimedia resource retrieval system based on the theme of preschool education, which mainly achieves the extraction of multimedia resources from web pages and the analysis of multimedia-related text information. In order to design a high-performance topic search algorithm, we must first carry out page parsing, Chinese and English word segmentation, and other page preprocessing. The research results show that it is found that the text-based automatic classification of multimedia resources in preschool education and the filtering of multimedia noise in web pages can provide relevant personnel in the field of preschool education with the retrieval service of multimedia resources.

Retrieval and Characteristic Analysis of Multimedia Tester Based on Bragg Equation

Abstract In order to solve the problem of Bragg equation, a research on retrieval and feature of multimedia testing machine is proposed. Firstly, this paper investigates the various stages of multimedia retrieval system and some mainstream multimedia retrieval algorithms, in order to cover all aspects of relevant algorithms. Secondly, on the basis of investigation, eight representative algorithms are selected. These algorithms cover three stages of multimedia retrieval system, including feature extraction stage, feature matching stage and geometric verification stage. Based on the above observed characteristics, finally, some relevant suggestions on architecture design and system optimization are put forward, including the design of single node processor, the design in parallel environment and the suggestions for simulation and evaluation using this test set.

FPGA implementation of high performance digital FIR filter design using a hybrid adder and multiplier

ABSTRACT The energetic growth in portable multimedia and mobile communication system has increased the requirement of high-speed signal processing system with compact area and power consumption. Finite impulse response(FIR) filters are broadly used in image, signal, speech and video signal processing, medical electronics, noise filtering, mobile communication and many other fields. The performance of the whole signal processing system with FIR filter depends on the basic building block of multiplier and adders. Hence, the hybrid FIR filter is proposed to improve the speed of the signal processing system using hybrid adder and hybrid multiplier. In this technique, the basic hybrid adder is designed with the help of 2-bit adders, BEC and 4:1 Multiplexer. Also, the hybrid multiplier is designed based on partial products of two consecutive multiplicand bits which are added at same time using Han-Carlson, Weinberger and Ling adder. The proposed FIR filter is functionally verified and synthesised using Xilinx ISE simulator and is implemented in Spartan 6 FPGA boards. The result shows that the delay of FIR filter using the proposed multiplier is improved by 26.51%, 15.59%, 15.83% and 2.79% as compared with CLA, conventional CSA, CSA-BK-BEC and the proposed adder with array multiplier, respectively.

Construction of an Online Education Platform Based on SOA Architecture and Multimedia Technology

With the deepening of basic education information work, the establishment of regional basic teaching platform, in order to integrate educational resources, unified teaching platform, centralized management of teaching information, education information development is an urgent matter. In view of the above situation, the multimedia teaching system for primary and secondary schools is designed and implemented based on the actual project requirements. In view of the characteristics of wide distribution and many applications of multimedia teaching platform in primary and secondary schools, the current mainstream architecture is adopted to realize the efficient application, flexible expansion and convenient maintenance of the system through centralized management and distributed deployment.

Digital Image Encryption and Decryption based on RSA Algorithm

Digital images are crucial in many areas, including online communication, multimedia systems, medical imaging, and military communications. Color images are being stored and transmitted over the internet and wireless networks in large amounts and thus it is necessary to protect them from any unauthorized user access. Cryptography is the art of codifying messages, so that the messages become unreadable, this way it plays a vital role in the field of security of data. There are several Cryptographic Algorithms to encrypt and decrypt Images. This paper aims to Encrypt and Decrypt Images based on RSA Algorithm providing Authentication and using Image Hash functions for additional Security and Integrity of images. This project also makes sure the Image retains its quality and is not corrupted even after decryption.

Multimedia Monitoring System of Obstructive Sleep Apnea via a Deep Active Learning Model

Obstructive sleep apnea (OSA) is one of the most commonsleep-related breathing disorders. Nearly 1 billion people worldwide suffer from it, causing serious health effects and social burden. However, traditional monitoring systems often fall short in terms of cost and accessibility. In this article, we first propose a deep active learning model to detect OSA events from electrocardiogram (ECG). We then designed and developed a prototype of OSA monitoring system using an ECG sensor and smartphone, in which our OSA detection algorithm is implemented and validated. Experiments show that we achieve accuracy of 92.15% while using 40% of labeled data, significantly reducing the cost of labeling and maximizing the performance. According to detection results and health-related multimedia signals, we provide OSA risk level and medical advice to the users. We believe that the multimedia monitoring system can efficiently help diagnose OSA, which could lead to effective intervention strategies and better sleep care.

PENGEMBANGAN MULTIMEDIA INTERAKTIF BERBASIS TEORI VAN HIELE UNTUK MATERI LINGKARAN KELAS VIII SMP

Interactive learning multimedia is a supporting tool in the learning process that is able to activate students to learn with high motivation because of their interest in multimedia systems that present text, image, video, audio and animation displays so that they are more interesting and help visualize topics that are still abstract. The purpose of this research is to develop an interactive learning multimedia for material of circles that was valid and practical. The type of research used is development research using the Plomp model which consists of a preliminary research stage and a prototype-making stage. The preliminary research phase includes needs analysis, student analysis, curriculum analysis and concept analysis. The prototype stage is the interactive learning multimedia design stage consisting of 1st prototype, 2nd prototype, 3rd prototype, and 4th prototype which are evaluated using a formative evaluation design. The results of this study indicate that the interactive learning multimedia produced is valid and practical. Keywords – Geometry, Interactive learning multimedia, Plomp, Van hiele theory

An Approach of Deep Learning Neural Network Model for Image Security

Abstract: Securing the Image and video data have applications in various fields like internet communication, multimedia systems, medical imaging, Telemedicine, and military communication. Watermarking protects digital intellectual property. It helps to prove the origin of an image and discourages unaccredited copies or distribution. The proposed method uses the concept of binding a secret message within another, ordinary, message. Our algorithm is used to unobtrusively hide a small message within the noisy regions of a larger image. Deep neural networks are simultaneously trained to create the hiding and revealing processes and are designed to specifically work as a pair. Different models are implemented to check the performance of the algorithm. The results are evaluated using 40,000 different types of images. With the state of art techniques like hiding the image in the least significant bits of the carrier image, our approach compresses and distributes the secret image’s representation across all of the available bits

Multimedia video recording assisted teaching method based on innovation strategies and VR technology

In order to make computer-aided teaching technology better applied in teaching, a multimedia video recording assisted teaching method based on VR technology is proposed. Based on the analysis of teaching video processing, the unique immersion and interactive characteristics are brought by virtual reality technology. Based on the modern intellectual property of innovation strategies, the multimedia video recording assisted teaching model is constructed to optimize the data processing function and structure of multimedia video teaching system. Optimize the evaluation index and evaluation algorithm of multimedia video recording assisted instruction, so as to realize the optimization of multimedia video assisted instruction method. Finally, the experiment proves that the multimedia video recording assisted instruction method based on VR technology has high practicability in the process of practical application and fully meets the research requirements.

Communication Protocols and Technologies for Multimedia Transmission: A Comprehensive Study

The exponential growth in end-user demand for multimedia content has necessitated significant advancements in communication technologies and multimedia processing. This paper presents a comprehensive review of various multimedia communication systems, focusing on the techniques employed for processing multimedia content and ensuring seamless transmission. It examines various technologies and communication protocols used to transport multimedia material while also addressing the difficulties these technologies present. The goal is to satisfy the growing demands for multimedia communication that include high data rates, wide bandwidth, low latency, and increased Quality of Service (QoS).

Enriching Facial Anti-Spoofing Datasets via an Effective Face Swapping Framework.

In the era of rapid development of the Internet of things, deep learning, and communication technologies, social media has become an indispensable element. However, while enjoying the convenience brought by technological innovation, people are also facing the negative impact brought by them. Taking the users’ portraits of multimedia systems as examples, with the maturity of deep facial forgery technologies, personal portraits are facing malicious tampering and forgery, which pose a potential threat to personal privacy security and social impact. At present, the deep forgery detection methods are learning-based methods, which depend on the data to a certain extent. Enriching facial anti-spoofing datasets is an effective method to solve the above problem. Therefore, we propose an effective face swapping framework based on StyleGAN. We utilize the feature pyramid network to extract facial features and map them to the latent space of StyleGAN. In order to realize the transformation of identity, we explore the representation of identity information and propose an adaptive identity editing module. We design a simple and effective post-processing process to improve the authenticity of the images. Experiments show that our proposed method can effectively complete face swapping and provide high-quality data for deep forgery detection to ensure the security of multimedia systems.

Evaluation of Mobile Augmented Reality Hearing-Impaired Museum Visitors Engagement Instrument

Mobile Augmented Reality has come a long way since its inception as a multimedia system during the last few decades. From the concept of an Augmented Reality experience to actual smartphone applications, it has come a long way. Researchers have chosen to leverage the concept of engagement in the construction of Mobile Augmented Reality applications in order to boost museum visitors' engagement and provide a more effective learning environment. The majority of Mobile Augmented Reality applications, on the other hand, were designed with normal hearing visitors in mind, while hearing-impaired visitors are given less attention. Those with hearing difficulties have an unfavourable experience as a result of this, and are unsatisfied with their visit. The elements of Mobile Augmented Reality aimed at engaging hearing-impaired museum visitors are determined in this study. The next step was to construct a conceptual model, which was then validated through an expert review. In investigating any flaws of the instrument among hearing-impaired museum visitors, a pilot study was conducted to improve the items and determine their level of reliability. Participants in the study were hearing-impaired who visited one of Iraq's ancient museums. This study will focus on evaluating the prototype to see how effective it is at engaging hearing-impaired museum visitors in the near future.

Video analysis and intelligent signal processing and diagnosis system for sports dance training items

Since the 1980s, various art and cultural activities from the West have been widely disseminated in our country, and sports dance is one of the most popular projects among them. However, the training for sports dance mostly stays in the traditional classroom, and is not combined with deep-learning techniques. We focus on the video analysis and intelligent diagnosis system of sports dance training projects. During the research process, we developed an intelligent platform dedicated to training projects and combined it with the signal processing diagnostic system. The effect of training will ultimately lead to better competition results. From the experimental data, in this test of ten dance styles, the highest comprehensive score is Waltz’s 8.93 points, and the lowest comprehensive score is Samba’s 8.312 points. Moreover, the system designed is superior to the traditional multimedia system in performance comparison, which can provide better help for sports dance training. On the whole, the application of the intelligent diagnosis system developed in sports dance training projects meets the expected demand.

An Optimization Framework of Adaptive Computing-plus-Communication for Multimedia Processing in Cloud: A Review

Abstract: Clear trend within the evolution of network-based services is that the ever-increasing amount of multimedia system data concerned. This trend towards big-data multimedia system process finds its natural placement at the side of the adoption of the cloud computing paradigm, that looks the most effective solution to the strain of a extremely fluctuating work that characterizes this sort of services. However, as cloud data centers become a lot of and a lot of powerful, energy consumption becomes a significant challenge each for environmental concerns and for economic reasons. An effective approach to improve energy efficiency in cloud data centers is to rely on traffic engineering techniques to dynamically adapt the number of active servers to the current workload. Towards this aim, we propose a joint computing-plus-communication improvement framework exploiting virtualization technologies. Our proposal specifically addresses the everyday situation of data processing processing with computationally intensive tasks and exchange of a giant volume of data. The proposed framework not only ensures users the Quality of Service, but also achieves maximum energy saving and attains green cloud computing goals in a fully distributed fashion by utilizing the DVFS-based CPU frequencies Keywords: Energy efficiency, Multimedia data processing, Cloud resource management, Load balancing, Dynamic voltage and frequency scaling (DVFS), Traffic engineering

Digitization of Real Time Systems as home

Abstract: Digitization of Real Time Systems as Home is an Automation System in which we control the home’s electrical components digitally. In this project we developed an application as a digital platform for controlling system. And the availability of the system will be ensured by the use of Internet. Our System helps users to access their home appliances easily and safely without any change in existing system in their home. So that without changing the actual components of the home, it’s implemented by adding digital interface between user and home. General Home Automation consists of replacement of each component with IoT devices. The availability of the control is limited to small scale area or local control area. Replacement of each component results in increment of investment which is very costly. The connection to the system requires same network to operate. A home automation system controls lighting, temperature, multimedia systems, and appliances. Since these devices and sensors are connected to common infrastructure, they form the Internet of Things. A home automation system links multiple controllable devices to a centralized server. Keywords: Home automation, IoT, Raspberry Pi, Firebase, Electrical Appliances, Android app.

A Survey Paper Based On Image Encryption and Decryption Technique

Abstract: Nowadays multimedia system knowledge protection is changing into important. The coding technique is employed to safeguard multimedia system knowledge. There are completely different techniques wont to defend confidential image knowledge from unauthorized access. during this paper, we've got an inclination to survey existing work that's used entirely completely different techniques for image coding and that we to boot give a general introduction relating to cryptography. Keywords: Encryption, Decryption, Data Encryption Standard (DES), Advanced Encryption Standard(AES), Blowfish, Modified Advanced Encryption Standard(MAES),Rubik’s Cube Algorithm

0147 Electrophysiologic Localization of Pathological Brain Tissue Is Accomplished with Intracranial Sleep Staging

0147 Electrophysiologic Localization of Pathological Brain Tissue Is Accomplished with Intracranial Sleep Staging

A Family of Optimal Multiple-Weight Optical Orthogonal Codes for Fiber-Optic Networks.

Optical orthogonal codes (OOCs) were designed for multimedia optical CDMA systems with quality of service requirements in optical fiber networks. Two-dimensional (2-D) multiple-weight optical orthogonal codes have been invested as they can overcome the drawbacks of nonlinear effects in large spreading sequences. In this paper, we reveal the combinatorial properties of optimal 2-D OOCs and focus our attention on the constructions for a family of optimal 2-D multiple-weight optical orthogonal codes by combinatorial methods, such as incomplete difference matrix, h-perfect cyclic packing, and skew starter. In particular, an improved construction of skew starters with multiple weights is also proposed to solve the existence of optimal multiple-weight optical orthogonal codes. Our numerical examples demonstrate that the proposed construction is very helpful for optimizing the utilization of optical network effectively.

Special issue on emerging technologies for information hiding and forensics in multimedia systems

Special issue on emerging technologies for information hiding and forensics in multimedia systems