Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

Multimedia system, Architecture & Databases

•Download as PPTX, PDF•
•

The document discusses multimedia databases and multimedia database management systems. It defines multimedia databases as collections of related multimedia data types including text, images, audio, and video. It also describes the additional metadata that must be managed along with the actual multimedia data. Multimedia database management systems provide support for different data formats and facilitate creation, storage, retrieval, querying, and control of multimedia data.

1 of 16
By Vini Garg Harshita Ved
 A Multimedia database (MMDB) is a collection of related multimedia data, which include one or more primary media data types such as text , images, graphic objects (including drawings, sk etches and illustrations) animat ion sequences, audio and video . A Multimedia Database Management System (MMDBMS) is a framework that manages different types of data potentially represented in a wide diversity of formats . It provides support for multimedia data types, and facilitate for creation, storage, access, query and control of a multimedia database.
 A Multimedia Database (MMDB) hosts one or more multimedia data types . These data types are broadly categorized into three classes::  Static media (time independent, constant, non interactive e.g. image and graphic object ).  Dynamic media (time dependent, moving, interactive, e.g. Audio , video and animation).  Dimensional media (3D game and computer aided drafting programs). E.g. virtual reality, 9-D movies
 Multimedia Database (MMDB) needs to manage additional information pertaining to the actual multimedia data. i.e.  Media data: the actual data representing an object.  Media format data: information about the format of the media data after it goes through the processing, and encoding phases. It is used to present the retrieved information.  Media keyword data: the keyword descriptions, usually relating to the generation of the media data. It is used as indices for searching purpose.  Media feature data: It contains content dependent data such as contain information about the distribution of colors, the kinds of textures and the different shapes present in an image. It is also used as indices for searching purpose.  (The last three types are called metadata as they describe several different aspects of the media data. )
 Like the traditional databases, Multimedia databases should address the following requirements:  Integration  Data items do not need to be duplicated for different programs invocations  Ensures database consistency between transactions  Data independence  Separate the database and the management from the application programs  Concurrency control  Allows concurrent transactions  Persistence  Data objects can be saved and re-used by different transactions and program invocations  Privacy  Access and authorization control  Recovery  Failures of transactions should not affect the persistent data storage  Query support  Allows easy querying of multimedia data.
 Multimedia data consists of a variety of media formats or file representations including TIFF, BMP, PPT , IVUE, FPX, JPEG , MPEG, AVI, MID, WAV, DOC, GIF, E PS, PNG, etc. Because of restrictions on the conversion from one format to the other, the use of the data in a specific format has been limited. Usually, the data size of multimedia is large such as video; therefore, multimedia data often require a large storage. Multimedia database consume a lot of processing time, as well as bandwidth.
 Integrate different data models: Some data such as numeric and textual data are best handled using a relational database model, while some others such as video documents are better handled using an object-oriented database model. So these two models should coexist together in MMDBs.  Synchronization of different media types while presenting to user: It is likely that different media types corresponding to a single multimedia object are stored in different formats, on different devices, and have different rates of transfer. Thus they need to be periodically synchronized for presentation.
 Integrated administration of huge amounts of multimedia data  Optimized storage  Efficient access  Manifold complex search possibilities  Referential integrity of links  Transaction protected multiuser mode  Recovery
 Digital Libraries- an organized collection of sources of information and similar resources  News-on-Demand  Video-on-Demand allow users to select and watch/listen to video or audio content when they choose to, rather than having to watch at a specific broadcast time.  Music database- Collection of music and/or their lyrics. E.g. in Saavn webstore  Geographic Information Systems (GIS)- system designed to capture, store, manipulate , analyze, manage, and present all types of spatial or geographical data  Telemedicine- use of telecommunication and information technologies in order to provide clinical health care at a distance
Multimedia system, Architecture & Databases
 Categorised as ‘live’ or ‘orchestrated’  Live applications involve interaction among users. Eg. Video Conferencing  Orchestrated applications reproduces the data that was previously generated and stored in some medium. Eg. Pay per view movies.  In order to satisfy the requirements of these categories various Multimedia Architectures are used.
 In order to satisfy the requirements of these categories of applications, various Multimedia Architectures are used.  Multimedia systems can either be standalone , server or networked.  Standalone Multimedia System: consist of storage subsystem , which is a database and storage devices where media content resides.  Server Multimedia System: consist of both storage subsystem and networked subsystem in levels.  Networked Multimedia System: consist of both networked subsystem.
Layered architecture Lower layer provide functionality to upper layers.
 Storage Subsystem and Network Subsystem (Layer 1) :-> These services are central to multimedia system and is normally part of OS services.  End-To-End QoS (Layer 2) :-> This layer deals with maintaining connection between source of the multimedia content and the destination. For Standalone system : Source -> multimedia database For Networked system : Source -> multimedia server QoS (Quality of Service) comprises of delay, jitter, and packet loss probability.
 Media Management (Layer 3) :-> It provides general services like media synchronization and media stream management . Also it ensures temporal and spatial relationships between media streams.  Application Layer (Layer 4) :-> Interface with the user, to provide access and control to the presentation.
Multimedia system, Architecture & Databases

More Related Content

Multimedia system, Architecture & Databases

  • 2.  A Multimedia database (MMDB) is a collection of related multimedia data, which include one or more primary media data types such as text , images, graphic objects (including drawings, sk etches and illustrations) animat ion sequences, audio and video . A Multimedia Database Management System (MMDBMS) is a framework that manages different types of data potentially represented in a wide diversity of formats . It provides support for multimedia data types, and facilitate for creation, storage, access, query and control of a multimedia database.
  • 3.  A Multimedia Database (MMDB) hosts one or more multimedia data types . These data types are broadly categorized into three classes::  Static media (time independent, constant, non interactive e.g. image and graphic object ).  Dynamic media (time dependent, moving, interactive, e.g. Audio , video and animation).  Dimensional media (3D game and computer aided drafting programs). E.g. virtual reality, 9-D movies
  • 4.  Multimedia Database (MMDB) needs to manage additional information pertaining to the actual multimedia data. i.e.  Media data: the actual data representing an object.  Media format data: information about the format of the media data after it goes through the processing, and encoding phases. It is used to present the retrieved information.  Media keyword data: the keyword descriptions, usually relating to the generation of the media data. It is used as indices for searching purpose.  Media feature data: It contains content dependent data such as contain information about the distribution of colors, the kinds of textures and the different shapes present in an image. It is also used as indices for searching purpose.  (The last three types are called metadata as they describe several different aspects of the media data. )
  • 5.  Like the traditional databases, Multimedia databases should address the following requirements:  Integration  Data items do not need to be duplicated for different programs invocations  Ensures database consistency between transactions  Data independence  Separate the database and the management from the application programs  Concurrency control  Allows concurrent transactions  Persistence  Data objects can be saved and re-used by different transactions and program invocations  Privacy  Access and authorization control  Recovery  Failures of transactions should not affect the persistent data storage  Query support  Allows easy querying of multimedia data.
  • 6.  Multimedia data consists of a variety of media formats or file representations including TIFF, BMP, PPT , IVUE, FPX, JPEG , MPEG, AVI, MID, WAV, DOC, GIF, E PS, PNG, etc. Because of restrictions on the conversion from one format to the other, the use of the data in a specific format has been limited. Usually, the data size of multimedia is large such as video; therefore, multimedia data often require a large storage. Multimedia database consume a lot of processing time, as well as bandwidth.
  • 7.  Integrate different data models: Some data such as numeric and textual data are best handled using a relational database model, while some others such as video documents are better handled using an object-oriented database model. So these two models should coexist together in MMDBs.  Synchronization of different media types while presenting to user: It is likely that different media types corresponding to a single multimedia object are stored in different formats, on different devices, and have different rates of transfer. Thus they need to be periodically synchronized for presentation.
  • 8.  Integrated administration of huge amounts of multimedia data  Optimized storage  Efficient access  Manifold complex search possibilities  Referential integrity of links  Transaction protected multiuser mode  Recovery
  • 9.  Digital Libraries- an organized collection of sources of information and similar resources  News-on-Demand  Video-on-Demand allow users to select and watch/listen to video or audio content when they choose to, rather than having to watch at a specific broadcast time.  Music database- Collection of music and/or their lyrics. E.g. in Saavn webstore  Geographic Information Systems (GIS)- system designed to capture, store, manipulate , analyze, manage, and present all types of spatial or geographical data  Telemedicine- use of telecommunication and information technologies in order to provide clinical health care at a distance
  • 11.  Categorised as ‘live’ or ‘orchestrated’  Live applications involve interaction among users. Eg. Video Conferencing  Orchestrated applications reproduces the data that was previously generated and stored in some medium. Eg. Pay per view movies.  In order to satisfy the requirements of these categories various Multimedia Architectures are used.
  • 12.  In order to satisfy the requirements of these categories of applications, various Multimedia Architectures are used.  Multimedia systems can either be standalone , server or networked.  Standalone Multimedia System: consist of storage subsystem , which is a database and storage devices where media content resides.  Server Multimedia System: consist of both storage subsystem and networked subsystem in levels.  Networked Multimedia System: consist of both networked subsystem.
  • 13. Layered architecture Lower layer provide functionality to upper layers.
  • 14.  Storage Subsystem and Network Subsystem (Layer 1) :-> These services are central to multimedia system and is normally part of OS services.  End-To-End QoS (Layer 2) :-> This layer deals with maintaining connection between source of the multimedia content and the destination. For Standalone system : Source -> multimedia database For Networked system : Source -> multimedia server QoS (Quality of Service) comprises of delay, jitter, and packet loss probability.
  • 15.  Media Management (Layer 3) :-> It provides general services like media synchronization and media stream management . Also it ensures temporal and spatial relationships between media streams.  Application Layer (Layer 4) :-> Interface with the user, to provide access and control to the presentation.