该方法可检测出几乎所有的突变和渐变镜头，获得了良好的综合检测效果。
The method can detect almost all abrupt and gradual shot and achieve fine general detection effects.
针对现有渐变镜头边界检测算法的不足，提出了一种先切分后检测的分层镜头边界检测方法。
A hierarchical detection method, cutting before detection, is presented to overcome the drawbacks of the available algorithms for detecting shot boundary of gradual transition.
采用改进的双阈值法和基于模型的方法进行渐变镜头的检测，根据运动向量的变化检测摄像机的运动状态。
Dual threshold and Basing on model are used to detect gradual changes, and the change of motorial vectors is used to detect the motion of the camera.
本文提出了一种简单的镜头检测方法，该方法首先使用视频亮度信息检测突变镜头，然后使用亮度和色度信息检测渐变镜头。
This paper present a simple shot detection method, video brightness information is used to detect abrupt shot and the combination of brightness and chroma information is used to detection.
相关的镜头渐变是怎样的？
如何识别镜头渐变是视频分割中的难点。
Identifying gradual change in video sequences is the difficult point in video shot cut detection.
研究人员通常将镜头转换分为突变和渐变，并根据各种转换的特点采用不同的检测算法。
Researchers usually classify scene changes as abrupt or gradual and develop respective algorithms to detect them.
该系统具有以下特点：1系统可以在非压缩域内进行镜头切变与渐变的检测。
The system has several features as follows: 1 Abrupt and gradual shot can be detected on uncompressed video.
镜头的转换方式分为切变和渐变，本文对镜头的切变和渐变中的淡入淡出检测分别做了研究。
The methods of shot change include abrupt change and gradual change, this thesis researches shot abrupt change detection and fade-in and fade-out of gradual change detection.
首先使用改进了的像素匹配二次差分法结合双阈值法进行镜头突变和渐变的检测，然后对镜头内的帧间距离进行判断来提取关键帧；
The pixel-matching two-difference algorithm and two histogram comparison are used for shot detection, a method of extraction shot key frame based on distance of adjacent frame is presented.
提出了一种能够适应复杂镜头边界编辑效果的视频镜头分割算法和一种能够有效地区分镜头运动与渐变的方法。
Secondly algorithms for the detection of the video shot boundaries with complex editing and the discrimination of camera motion and gradual transition are presented.
实验结果表明，系统对镜头切变的检测取得了良好的效果，同时，也可以对滑动、淡入淡出、擦除等渐变进行检测。
The experiment results show the abrupt detection is excellent and the gradual shot such as sliding, fade in and fade out, wipe etc. can also be detected.
最后使用决策树进行决策，判断是否为镜头渐变。
Finally, the decision tree is adopted to decide whether there is a gradual transition.
软化它上面加入黑色透明线性梯度 ：设置你的前景色为黑色，在渐变工具以激活渐变选项单击镜头喇叭。
Soften the Lens Flare by adding a Linear Black Transparent Gradient above it: Set your Foreground color to black, click on the Gradient Tool to activate the Gradient Options.
软化它上面加入黑色透明线性梯度 ：设置你的前景色为黑色，在渐变工具以激活渐变选项单击镜头喇叭。
Soften the Lens Flare by adding a Linear Black Transparent Gradient above it: Set your Foreground color to black, click on the Gradient Tool to activate the Gradient Options.
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