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