Multimedia database

About: Multimedia database is a research topic. Over the lifetime, 1404 publications have been published within this topic receiving 19856 citations. The topic is also known as: Multimedia database & MMDB.

Brauer configuration algebras for multimedia based cryptography and security applications

Abstract: The notion of visual cryptography was introduced without formalisms by Naor and Shamir in 1994. It provides a very powerful technique by which one secret can be distributed into two or more shares, when the shares on transparencies are superimposed exactly together, the original secret can be discovered without computer participation. In this paper, master or universal shares defined by some suitable Brauer configuration algebras are used to protect multimedia database systems and in particular digital biometric data (e.g., iris, fingerprints, handwritten signatures, DNA, faces, etc). Master shares allow to conceal effectively and efficiently multiple secrets between a number of trusted parties. In this proposal such master shares are encoded by sequences of integer numbers, thus saving storage space of the database servers involved in the protection process. According to the procedure, a master share is obtained via a digit sequencing algorithm (DSA), which define elements of a database as linear combinations of basic elements of a suitable Brauer configuration algebra (BCA).

Electronic multimedia data management for remote population in Ecuador

Abstract: Purpose : A large part of medicine is the management of patient related information inclusive of demographic data, historical data, data-rich multimedia diagnostic studies and longitudinal disease management. Managing the volume of information generated from patient examination and disease management into an accurate and seamless record challenges traditional record systems. This array of patient relevant data is currently recorded with handwritten notes and reviewed by the physician only after accessing the patient's medical record in the office. By integrating an electronic medical record (EMR) into patient management, the physician can access and manage patient data efficiently and accurately. Many successful EMR applications are available for advanced health systems. This study applied a Spanish language EMR developed with the clinical practitioners at remote clinics in Ecuador to support patient management. The data files were shared electronically with their regional collaborating clinics and internationally for clinical consultations. Methods : A relational database format was established with user-friendly interface to contain the necessary fields for data acquisition inclusive of manual data field entry as well as drop down fields for rapid data entry. Still and video format images were integrated to accommodate results from radiographs, sonograms, microscopic and colposcopy examinations. Application of the software at the general medicine clinics in a remote area of Ecuador provided an interface on a desktop computer to capture and share data for general medicine cases, general surgery, pediatrics, as well as obstetrics. The patient files were archived in a secure format within the computer at the clinic with restricted entry by password. Results : Staff and clinicians in the clinics easily recorded demographic, and specific patient care information. Clinicians were able to query electronic files for easy update and for follow-up in patient care practices. The software design allowed file compression in order to include various data file formats from multiple freestanding diagnostic devices to a consolidated EMR. The EMR was utilized locally at its source and shared with consultants at Virginia Commonwealth University (VCU) in a teleconsultation format. Conclusion : The EMR described here can support integration of diverse data formats from multiple diagnostic devices and provides a uniform interface in compliance with federal regulations. Additionally, the EMR data can be extracted in XML format for secure export independent of operating systems. Such a comprehensive database serves the needs with minimal lines of code, minimal need for technical support, simplicity of usage and responsive to local medical and linguistic realities.

Digital Video Searching And Authoring Tool

Abstract: PURPOSE: An apparatus for searching and creating digital video is provided which searches annotation describing related information about characteristic scenes of a digital video clip and contents with respect to extraction of characteristics on a local network or Internet. CONSTITUTION: An apparatus for searching and creating digital video includes a meta database(150) in which video index is stored as data to support searching of annotation describing related information about video clips and contents with respect to extraction of characteristics, a presentation database in which video clips searched from the meta database and edited by a presentation editor are stored as presentation data, and a multimedia database that stores the meta data, presentation data and digital video and is connected to the Internet(15). The apparatus further has a video searching device(120) performing searching based on the video index, an inquiry interpreter(25) for finding out the type of an input inquiry using a parameter list, and an inquiry language generator(30) for receiving the parameter list from the inquiry interpreter and converting the parameter list into an inquiry language of a corresponding DBMS. The apparatus also has a search result processor(40) for displaying representative frames according to the searched result to allow a user to be able to selectively watch contents information, and a structure browser(50) by which a video structure can be easily grasped and searched.

Web Access to Large Audiovisual Assets Based on User Preferences

Abstract: Current multimedia databases contain a wealth of information in the form of audiovisual as well as text data. Even though efficient search algorithms have been developed for either media, there still exists the need for abstract presentation and summarization of the results of database users' queries. Moreover, multimedia retrieval systems should be capable of providing the user with additional information related to the specific subject of the query, as well as suggest other topics which could be identified to attract the interest of users with a similar profile. In this paper, we present solutions to these issues, giving as an example an integrated architecture we have developed, along with notions that support efficient and secure Internet access to audiovisual/video databases. Segmentation of each video in shots is followed by shot classification in a number of predetermined categories. Generation of users' profiles according to the categories, enhanced by relevance feedback, permits an efficient presentation of retrieved video shots or characteristic frames in terms of the user interest in them. Moreover, this clustering scheme assists the notion of ‘lateral’ links that enable the user to continue retrieval with data of similar nature or content to those already returned. Furthermore, user groups are formed and modeled by registering actual preferences and practices. This enables the system to ‘predict’ information that is possibly relevant to the user's interest and present it along with the returned results. The concepts utilized in this system can be smoothly integrated in MPEG-7 compatible multimedia database systems.

Image Processing Apparatus And Method In Mobile Internet

Abstract: PURPOSE: A device and a method for processing an image in the wireless Internet are provided to cut the image according to a transmission speed of a wireless Internet service and a screen size of a mobile terminal, and to assign URLs(Uniform Resource Locators) for each cut image to enable a user to selectively receive the cut image, so that the user receives a desiring part of the image with high resolution CONSTITUTION: An electronic mail server(31), a multimedia parsing unit(32), a user profile storage unit(34) and a Web server(36) are arranged A multimedia database(33) stores multimedia information classified by media, and stores image information cut into predetermined numbers according to a screen size of a mobile terminal In a media converting unit(35), an image converter(35-1) searches a user profile to change resolution, depth and format of the image An image cutting unit(35-2) cuts the image converted by the image converter(35-1) into predetermined number of image segments according to the screen size of the mobile terminal and stores the image segments in the multimedia database(33) And the image cutting unit(35-2) assigns URLs to each image segment to enable a receiving party to selectively download the image segments, and transmits the URL-assigned image segments to the mobile terminal