Abstract: The present invention is intended to provide multiple levels of digest streams for multimedia contents with small amount of additional storage using a multiple level digest segment information scheme. In the present invention, a multiple level digest segment information is contained in the content-based data area of the multimedia content by representing a level information of each digest segment by multiple levels in a content-based data area of a multimedia content, describing the digest level of the digest segment and the time range information of the digest segment in the digest segment information scheme, and outputting digest segments whose digest level is less than or equal to requested digest level by decoding, upon receipt of the digest level of the digest segment.

Abstract: A method for reproducing video contents includes the steps of: selecting a reproduction shot from video contents, based on a current location information and a shot index information; determining a reproduction section from the selected reproduction shot; and reproducing the determined reproduction section. After the determined reproduction section is reproduced, the above processes are repeated to next reproduction shots. The repetitive processes are performed all over the video contents until the user requests a reproduction change.

Abstract: An automatic video-contents reviewing system and method using a bookmark and a summary view for contents is provided. The method including the steps of: searching information on a summary-view/normal reproduction conversion position, which is set for a user's selecting content, in response to a user's request for automatic video-contents review; and performing a summary-view reproduction for video contents up to the summary-view/normal reproduction conversion position, and after the summary-view reproduction is terminated, performing normal reproduction in a normal reproduction mode.

Abstract: There is provided an image recording and reproducing apparatus, in which a user can simultaneously view a current broadcasting and a previous broadcasting with respect to one image content using a multi-decoding.

Abstract: Disclosed is a video reproducing method and system which is capable of reproducing a video stream under a maximum reflection of an actually desired location by selecting an optimum location within a predetermined section set up with reference to a location arbitrarily selected by a drag and play function.

Abstract: A more efficient data structure and method for browsing a multimedia is disclosed. In the present invention, link information between segments and semantic elements of a multimedia data structure is generated with minimal use of storage. Also, priority or weight of segments is represented based on semantic elements and priority or weight of semantic elements is represented based on segments to allow a search of multimedia based on content. The priority or weight information is represented as an attribute of the link information to increase the efficiency of the storage and a method of automatically extracting the priority or weight information is disclosed.

Abstract: The present invention relates to a method and apparatus for detecting an edge in an image or video. The present invention can detect an edge more quickly by detecting edge information by using the absolute values and codes of two coefficients (AC01, AC10) in the DCT domain. In addition, the present invention can detect a more rapid and accurate edge by using the edge detection method using two coefficients as a pre-filter and using the edge detection method using a spatial filter as a post-filter.

Abstract: Disclosed herein is a method allowing a user to browse news video more conveniently. An intelligent news video browsing method according to the present invention comprises the steps of: producing index information on anchor shot segment and episode scene segment in news video contents including at least both of the segments; and browsing a concerned news video by applying different reproduction methods and different reproduction speeds to each of the anchor shot segment and episode scene segment in the news video contents.

Abstract: The present invention relates to a method, interface and apparatus for video browsing, through which the information of video content and structure are simultaneously delivered to users. If there is more space available for display, a scene key frame list, a scene structure key frame list, a shot key frame list or a moving picture viewer can be further displayed. Accordingly, users can understand entire content of the video even within a small space, and can easily shift to any desired position through a simple operation of keys.

Abstract: Disclosed herein is a method of detecting a shot transition of a moving picture video, comprising the steps of: extracting a color histogram of three adjacent frames in order on time series; obtaining a difference of the color histogram between the three adjacent frames and then detecting a shot transition candidate interval by concurrently using arrangement characteristics of the difference of the color histogram; and examining a distribution of a macro block type within the shot transition candidate interval and verifying whether a shot transition is present or not within the shot transition candidate interval.

Abstract: A method and apparatus for controlling reproduction of video contents, wherein a user can readily move a play position to a desired scene within a brief period of time to reproduce video contents from the moved play position. The user can pause or replay a desired scene without requesting separate skipping. In particular, in the case where the user requests a pause mode or a normal play mode during a quick browsing mode, rather than during the normal play mode, the present system exhibits many differences from existing systems and excellent performance over them.

Abstract: The present invention generally relates to a multimedia browsing system, and more particularly, to a method for generating a synthetic key frame, which allows a video stream to be efficiently summarized while being searched and filtered based upon the summarization. The present invention generates the synthetic key frame based upon video text by calculating an importance measure of text areas extracted from the video image and using only those text areas having the importance measures of at least a predetermined value.

Abstract: The present invention relates to a method that can effectively summarize news video and an article-based video-browsing system that enables effective searching and filtering using the method.

Abstract: Disclosed is a user history based multimedia service system, wherein user history data include a multimedia consumption type and/or consumption behavior of the user. The consumption type data includes a start time or end time of the multimedia content consumption (i.e., simple view data), content recording time and format, content backup time and format, and content transfer time and format. The consumption behavior data includes a content access/play data such as a normal finish, skimmed, skipped, slowed, or replay, and a stopped data of the content access/play. The consumption type or consumption behavior data include information on program identification and information on access to the consumption type/consumption behavior data. The respective data is provided for each user and program.

Abstract: The present invention relates to a system for searching and browsing multimedia, and more particularly, to a video skimming method and apparatus which is capable of summarizing the full content of a subject video data within a short time and rapidly moving to a desired section by skimming the content of the video based on scenes and shots formed by shot clustering and shot segmentation. The video skimming apparatus selects scenes to be reproduced and scenes to be skipped based on content-based video skimming, and then continuously reproducing a pertinent section in a shot of the scene or partially reproducing the same by utilizing a skipping technique.

Abstract: Described is an intelligent fast-forward video system that automatically controls a relative play speed of the video based on a complexity of the content reflecting the real story of a video, thereby enabling to carry out a fast-forward viewing for summarizing an entire story of a digital video or moving fast to a major concerning part. The present invention obtains the complexity of the content using information of motion vector, shot, face, text, and audio for an entire video and adaptively controls the play speed for each of the intervals on a fast-forward viewing of the corresponding video on the basis of the obtained complexity of the content. And, in more detail, the present invention plays a complicated story interval relatively slow and a simple and tedious part relatively fast, thereby enabling to provide a user with a summarized story of the corresponding video without viewing the entire video as well as a fast search for a part wanted by the user.

Abstract: A wipe and special effect detection method in a gradual shot transition method used for editing a video stream is described.

Abstract: A client device (set-top box) allows to record and play simultaneously a multimedia stream transmitted from a broadcasting station or a video/radio server. The present invention enables to provide a user with a function of searching/filtering or browsing the previously-stored streams using structural/meaningful/summarized information to meet a user's demand by installing an automatic indexing/search device in a client device, such as a Tivo, Replay TV or the like which enables the user to record and play sound/video synchronously and store index information in a storage device by extracting and indexing meaningful/structural/summary information of a multimedia stream automatically when video/sound recording of the multimedia stream is carried out.

Abstract: A more efficient data structure and method for browsing a multimedia is disclosed. In the present invention, link information between segments and semantic elements of a multimedia data structure is generated with minimal use of storage. Also, priority or weight of segments is represented based on semantic elements and priority or weight of semantic elements is represented based on segments to allow a search of multimedia based on content. The priority or weight information is represented as an attribute of the link information to increase the efficiency of the storage and a method of automatically extracting the priority or weight information is disclosed.

Abstract: The present invention relates to a non-linear reproduction control method of multimedia stream and an apparatus thereof, the present invention comprises judging a skip direction by interpreting whether a skip request is a forward skip or a backward skip when the skip request is inputted from the user, determining a skip unit by judging whether the user request is a big unit or a small unit, selecting a structural information or semantic information change point of the multimedia stream mostly adjacent to the present reproduction position as a reproduction resume point on the basis of the determined skip direction and skip unit or selecting the reproduction resume point by using the set temporal offset from the preset reproduction position, accordingly it is possible to.