有哪些信誉好的足球投注网站- 1、本文档共6页，可阅读全部内容。
- 2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
- 3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
查看更多
Detection of Gradual Transitions through Temporal Slice Analysis
Detection of Gradual Transitions through Temporal Slice AnalysisC. W. Ngo, T. C. Pong R. T. ChinDepartment of Computer ScienceThe Hong Kong University of Science TechnologyClear Water Bay, Kowloon, Hong KongEmail: fcwngo, tcpong, rolandg@cs.ust.hkAbstractIn this paper, we present approaches for detectingcamera cuts, wipes and dissolves based on the analysisof spatio-temporal slices obtained from videos. Theseslices are composed of spatially and temporally coher-ent regions which can be perceived as shots. In the pro-posed methods, camera breaks are located by perform-ing color-texture segmentation and statistical analysison these video slices. In addition to detecting camerabreaks, our methods can classify the detected breaks ascamera cuts, wipes and dissolves in an ecient man-ner.1 IntroductionA video is physically formed by shots; a shot isan uninterrupted segment of screen time, space andgraphical con gurations. The boundary between twoshots is called camera break. There are three majortypes of camera breaks: cut, wipe and dissolve. Acamera cut is an instantaneous change from one shotto another; a wipe is a moving boundary line cross-ing the screen such that one shot gradually replacesanother; a dissolve superimposes two shots where oneshot gradually lighten while the other fade out slowly.Wipe and dissolve are normally referred to as gradualtransitions.In the current literature, there are various algo-rithms for detecting camera breaks [7, 10], in general,we can categorize them as statistic-based, histogram-based, feature-based, transformed-based, and motion-based. Most existing algorithms can segment a videosequence into shots correctly if the sequence hassmooth frame transitions within a shot and abruptspatial changes between shots. These algorithms areinsensitive to gradual transitions since the change be-tween two consecutive frames is small. Furthermore,methods based on the frame-to-frame di erence met-rics and feature analysis are computationally expen-
您可能关注的文档
- Computing gaussian mixture models with EM using equivalence constraints.pdf
- Computational identification and evolutional analysis of Piwi subfamily in 11 Drosophila species.pdf
- comsol在纳米方面的应用.pdf
- Condensate fraction of molecules for a spin mixture of ultracold fermionic atoms.pdf
- Computational Design and Performance of the Fast Ocean Atmosphere Model.pdf
- Computer modeling and simulation of solid-state sintering.pdf
- Condensate-profile asymmetry of a boson mixture in a disk-shaped harmonic trap.pdf
- Concern and Help.ppt
- Concern for information privacy and online consumer purchasing.pdf
- Condensation of acyl chloride on sodium cyanate - preparation of acyl isocyanates.pdf
文档评论（0）