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Content-based digital video processing : digital videos segmentation, retrieval and interpretationChen, Juan January 2009 (has links)
Recent research approaches in semantics based video content analysis require shot boundary detection as the first step to divide video sequences into sections. Furthermore, with the advances in networking and computing capability, efficient retrieval of multimedia data has become an important issue. Content-based retrieval technologies have been widely implemented to protect intellectual property rights (IPR). In addition, automatic recognition of highlights from videos is a fundamental and challenging problem for content-based indexing and retrieval applications. In this thesis, a paradigm is proposed to segment, retrieve and interpret digital videos. Five algorithms are presented to solve the video segmentation task. Firstly, a simple shot cut detection algorithm is designed for real-time implementation. Secondly, a systematic method is proposed for shot detection using content-based rules and FSM (finite state machine). Thirdly, the shot detection is implemented using local and global indicators. Fourthly, a context awareness approach is proposed to detect shot boundaries. Fifthly, a fuzzy logic method is implemented for shot detection. Furthermore, a novel analysis approach is presented for the detection of video copies. It is robust to complicated distortions and capable of locating the copy of segments inside original videos. Then, iv objects and events are extracted from MPEG Sequences for Video Highlights Indexing and Retrieval. Finally, a human fighting detection algorithm is proposed for movie annotation.
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Development of a technique to identify advertisements in a video signal / Ruan MoolmanMoolman, Ruan January 2012 (has links)
In recent years Content Based Information Retrieval (CBIR) has received a lot of research
attention, starting with audio, followed by images and video. Video ngerprinting is a
CBIR technique that creates a digital descriptor, also known as a ngerprint, for videos
based on its content. These ngerprints are then saved to a database and used to detect
unknown videos by comparing the unknown video's ngerprint to the ngerprints in the
database to get a match. Many techniques have already been proposed with various levels
of success, but most of the existing techniques focus mainly on robustness and neglect the
speed of implementation.
In this dissertation a novel video ngerprinting technique will be developed with the main
focus on detecting advertisements in a television broadcast. Therefore the system must be
able to process the incoming video stream in real-time and detect all the advertisements
that are present. Even though the algorithm has to be fast, it still has to be robust enough
to handle a moderate amount of distortions.
These days video ngerprinting still holds many challenges as it involves characterizing
videos, made up of sequences of images, e ectively. This means the algorithm must
somehow imitate the inherent ability of humans to recognize a video almost instantly.
The technique uses the content of the video to derive a ngerprint, thus the features used
by the ngerprinting algorithm should be robust to distortions that don't a ect content
according to humans. / Thesis (MIng (Computer and Electronic Engineering))--North-West University, Potchefstroom Campus, 2013
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Development of a technique to identify advertisements in a video signal / Ruan MoolmanMoolman, Ruan January 2012 (has links)
In recent years Content Based Information Retrieval (CBIR) has received a lot of research
attention, starting with audio, followed by images and video. Video ngerprinting is a
CBIR technique that creates a digital descriptor, also known as a ngerprint, for videos
based on its content. These ngerprints are then saved to a database and used to detect
unknown videos by comparing the unknown video's ngerprint to the ngerprints in the
database to get a match. Many techniques have already been proposed with various levels
of success, but most of the existing techniques focus mainly on robustness and neglect the
speed of implementation.
In this dissertation a novel video ngerprinting technique will be developed with the main
focus on detecting advertisements in a television broadcast. Therefore the system must be
able to process the incoming video stream in real-time and detect all the advertisements
that are present. Even though the algorithm has to be fast, it still has to be robust enough
to handle a moderate amount of distortions.
These days video ngerprinting still holds many challenges as it involves characterizing
videos, made up of sequences of images, e ectively. This means the algorithm must
somehow imitate the inherent ability of humans to recognize a video almost instantly.
The technique uses the content of the video to derive a ngerprint, thus the features used
by the ngerprinting algorithm should be robust to distortions that don't a ect content
according to humans. / Thesis (MIng (Computer and Electronic Engineering))--North-West University, Potchefstroom Campus, 2013
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Content-based Digital Video Processing. Digital Videos Segmentation, Retrieval and Interpretation.Chen, Juan January 2009 (has links)
Recent research approaches in semantics based video content analysis require shot boundary detection as the first step to divide video sequences into sections. Furthermore, with the advances in networking and computing capability, efficient retrieval of multimedia data has become an important issue. Content-based retrieval technologies have been widely implemented to protect intellectual property rights (IPR). In addition, automatic recognition of highlights from videos is a fundamental and challenging problem for content-based indexing and retrieval applications.
In this thesis, a paradigm is proposed to segment, retrieve and interpret digital videos. Five algorithms are presented to solve the video segmentation task. Firstly, a simple shot cut detection algorithm is designed for real-time implementation. Secondly, a systematic method is proposed for shot detection using content-based rules and FSM (finite state machine). Thirdly, the shot detection is implemented using local and global indicators. Fourthly, a context awareness approach is proposed to detect shot boundaries. Fifthly, a fuzzy logic method is implemented for shot detection. Furthermore, a novel analysis approach is presented for the detection of video copies. It is robust to complicated distortions and capable of locating the copy of segments inside original videos. Then,
iv
objects and events are extracted from MPEG Sequences for Video Highlights Indexing and Retrieval. Finally, a human fighting detection algorithm is proposed for movie annotation.
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