نتایج جستجو برای: shots
تعداد نتایج: 2889 فیلتر نتایج به سال:
This paper studies the relative entropy and its square root as distance measures of neighboring video frames for video key frame extraction. We develop a novel approach handling both common and wavelet video sequences, in which the extreme Studentized deviate test is exploited to identify shot boundaries for segmenting a video sequence into shots. Then, video shots can be divided into different...
We describe progress in matching shots which are images of the same 3D scene in a film. The problem is hard because the camera viewpoint may change substantially between shots, with consequent changes in the imaged appearance of the scene due to foreshortening, scale changes and partial occlusion. We demonstrate that wide baseline matching techniques can be successfully employed for this task b...
Based on the analysis of temporal slices, we propose novel approaches for clustering and retrieval of video shots. Temporal slices are a set of two–dimensional (2-D) images extracted along the time dimension of an image volume. They encode rich set of visual patterns for similarity measure. In this paper, we first demonstrate that tensor histogram features extracted from temporal slices are sui...
To enable a viewer to understand the original plot by just watching a condensed video, a successful video summarization system should yield a summary that preserves both content highlights and information coverage. Content highlights include a set of diverse concept patterns, each of which corresponds to semantically similar video shots and video scenes, each of which represents a sequence of h...
Based on a simple temporal structural model of news program, this paper presents a practical solution to automatic news story segmentation by integrating syntactic and semantic methods. First, a syntactic segmentation method is used to detect the shot boundaries in order to partition video frames into video shots. Then a semantic segmentation method based on the graph-theoretical cluster analys...
We aim to detect complex events in long Internet videos that may last for hours. A major challenge in this setting is that only a few shots in a long video are relevant to the event of interest while others are irrelevant or even misleading. Instead of indifferently pooling the shots, we first define a novel notion of semantic saliency that assesses the relevance of each shot with the event of ...
In this work, an application system is proposed to classify American Football Video shots. The application uses MPEG-7 motion and audio descriptors along with Mel Frequency Cepstrum Coefficient features to classify the video shots into 4 categories, namely: Pass plays. Run plays, Field Goal/Extra Point plays and Kickoff/Punt plays. Fisher’s Linear Discriminant Analj^sis is used to classify the ...
We introduce an interface for efficient video search that exploits the human ability to quickly scan visual content, after an automatic system has done its best to arrange the images in order of relevance. While extreme video retrieval is taxing to the human, it has also been shown to be extremely effective. Two variants of extreme retrieval are demonstrated, 1) RSVP which automatically pages t...
Based on the 89 stones treated by ESWL therapy alone, the factors which influence the number of ESWL shots were analyzed. Stone volume was calculated by summing up the value "length x short axis" for each stone. The value correlated well with the number of shots needed to disintegrate the stone (p less than 0.01). The stones below the pelvis-ureteral junction needed twice shots compared with st...
anterior lower thorax. The lower chest wall, liver, pericardium, base of right lung and heart were impregnated with shot pellets, giving the classical multiple ‘‘star burst’’ appearance. (fig. 1a). Extensive debridement of the chest wall wound was performed, with the removal of numerous lead shots. Intracardiac and intrapulmonary shots were left in situ and successfully managed conservatively [...
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