TAILIEUCHUNG - Lecture BSc Multimedia - Chapter 15: Content-based retrieval

Chapter 15: Content-based retrieval. This chapter presents the following content: Motivation, traditional techniques, how do humans compare images? Content-based image retrieval, image retrieval, CBIR framework example, image/audio fingerprints,. | CM3106 Chapter 15 Content-Based Retrieval Prof David Marshall and Dr Kirill Sidorov CARDIFF UNIVERSITY PRIFYSCOL CAERpv School of Computer Science Informatics Cardiff University UK Motivation Suppose we want to search a multimedia database. Applications Medicine find similar diagnostic images. Crime find person according to mugshot fingerprints sketch or verbal description. Art search museum collection of paintings. Copyright who used my images without permission Retail find shoes similar to these ones only red. CM3106 Chapter 15 CBR Image Retrieval 1 Traditional Techniques Text-based multimedia search and retrieval Annotations metadata . File names. Keywords. Captions. Surrounding text. Photography conditions. Geo tags. Creation date. Verbal portrait in the police database. Usually does a very good job provided the annotations are accurate and detailed. . google image search youtube video search. Disadvantages Manual annotation requires vast amount of labour. Different people may perceive the contents of images differently no objectivity in keywords annotations. CM3106 Chapter 15 CBR Image Retrieval

• Điện - Điện tử
• BSc Multimedia
• Multimedia applications
• Multimedia data
• Content based retrieval
• Image retrieval
• Audio fingerprints
• Multimedia systems
• Format text
• Multimedia data compression
• Multimedia data basics
• Continuous media
• Digital signals
• Digital audio synthesis
• Digital audio signal processing
• Multimedia data acquisition
• Basic compression algorithms
• Modeling multimedia data
• Information theory
• Fourier transform
• Digital signal processing
• Digital audio
• Digitising sound
• Digital sampling
• Subtractive synthesis
• Wavetable synthesis
• MPEG 4 audio compression
• MIDI system
• MIDI messages
• Digital audio effects
• Effects types
• Digital audio filtering effects
• Discrete cosine transform
• Frequency domain
• Joint Photographic Expert Group
• Quantisation tables
• Differential Pulse Code Modulation
• MPEG video
• Video compression
• Decoding motion of blocks
• MPEG 4 video
• MPEG 4 video compression
• Object based coding
• MPEG audio
• Adaptive predictive coding
• Audio compression