Multimedia search

Metadata search and Query by example
– Search is made using layers in metadata
– Metadata contains information of multimedia file content
– Metadata search is easier, faster, and effective
– It searches using text instead of complex material
– Three processes in this method: summarization of media content, filtering of media descriptions, categorization of media descriptions
– Query by example uses multimedia content (image, audio, video) for search
– Query is a media and often used for audiovisual indexing
– Descriptors are generated for query media and media in database
– Descriptors of query and database media are compared
– Media is listed sorted by maximum coincidence

Multimedia search engine
– Two big search families based on content: visual search engine and audio search engine
– Visual search engine includes image search and video search
– Image search uses simple metadata and indexing methods for accurate results
– Video search uses simple or complex metadata and audio search engines
– Audio search engine includes voice search engine and music search engine

Visual search engine
– Visual search engine has two topics: image search and video search
– Image search uses simple metadata and indexing methods
– Query by example, such as QR codes, improves accuracy of user queries
– Video search can use simple or complex metadata and audio search engines
– Audio in videos is usually scanned by audio search engines

Audio search engine
– Audio search engine includes voice search engine and music search engine
– Voice search engine allows searching using speech instead of text
– It uses algorithms of speech recognition, like Google Voice Search
– Music search engine works on simple metadata but also has music recognition programs
– Examples of music recognition programs are Shazam and SoundHound

Miscellaneous
– Multimedia search involves searching for multimedia content using different methods
– Metadata search and query by example are two popular methods
– Visual search engine and audio search engine are two types of multimedia search engines
– Visual search engine includes image search and video search
– Audio search engine includes voice search engine and music search engine