Now that we have a frame-by-frame extraction of our source video files, we can create tiled background images in sequence for each frame of the final product.
既然我们已逐帧提取出了源视频文件，对于最终产品的每一帧，我们可以按次序创建贴片的背景图像。
To create our Mosaic video, we need a frame-by-frame extraction of all the source videos.
要创建马赛克视频，首先需要一帧一帧提取所有源视频。
ProPublica collaborated with journalism students to produce a music video called "the Fracking Song", part of an investigation into the impact of sale-gas extraction.
ProPublica与新闻系学生合作了一部音乐剧“追踪溯源歌”，用作一个有关页岩天然气提取所造成的影响的调查片段。
Firstly, we do video segmentation and key frame extraction.
首先，进行视频分割和提取关键帧。
Text extraction is a key technique in content-based video retrieval as textual information plays an important role in describing the content of image.
文字信息在描述图象内容时起着重要的作用，因此文字提取及识别是基于内容视频检索的关键技术。
Functionally, a landmark recognition system contains the following processes: the obtaining of digital video flowing, character extraction and image identification.
微型无人直升机的路标识别系统主要包括实时视频流的采集、图像特征的提取和图像识别几部分。
In this paper, news story segmentation and topic caption text extraction, as well as content based video browsing and querying, are addressed in detail.
本文详细讲述了新闻故事的分段，主题字幕文本的提取和在此之上的基于内容的视频浏览和查询。
A scheme on shot content analysis for two video retrieval applications, shot retrieval and scene structure extraction is presented.
提出了一种镜头内容分析方法及其在视频检索中的两个应用：镜头检索与场景结构提取。
For the problem of video object segmentation, a new approach was presented to video object extraction and tracking.
针对视频对象的分割问题，提出了一种新的视频对象提取与跟踪方法。
Representative frame extraction for digital video is important for forthcoming multimedia information retrieval.
典型帧提取是多媒体视频检索的一个重要技术分支。
Video key fr a me extraction. Using threshold algorithm to find key fr a mes in every scene and save them.
说明：视频关键帧提取。全阈值算法找到每个镜头的关键帧并保存。
On the basis of analyzing and comparing existing methods, it presents a motion feature extraction method which is based on movement object in video.
在对现有视频运动分析方法进行分析比较的基础上，提出了一种基于视频中运动对象的运动特征提取方法。
The design method of video signal's magnitude extraction circuit is expounded, and this design method is applied in the automatic dimmer system.
介绍了一个视频信号幅值提取电路的设计方案，并应用于摄像机自动调光系统。
The segmentation of video is the basis of the video object extraction, processing and recognition. It is also the premise of the content-based video compression and retrieving.
视频序列分割是实现视频对象提取、处理和识别的基础，也是基于内容的视频压缩和检索的前提。
An automatic and accurate moving object extraction algorithm is proposed to segment head-shoulder video sequence.
针对头肩视频序列，本文提出了一种头肩视频对象的自动精确提取算法。
The framework of video abstraction system in compressed domain is described, and main algorithms such as shot change detection, key-frame extraction and face detection are discussed.
给出了压缩域视频摘要系统的结构框架，并对其中的压缩域视频镜头变换检测、关键帧提取和压缩域人脸检测等主要算法进行了讨论。
The automatic video annotation is a key module of the video indexing and retrieval system, and the extraction and location of captions are important steps for video annotation.
视频的自动标注是视频检索系统中的重要模块，而字幕的提取与定位则是视频标注的重要步骤。
Text extraction in digital video plays important role in content based video indexing.
从数字视频中提取文字对基于内容的视频索引的建立具有重要意义。
This system includes video capture module, the face detect module, the feature extraction module and the face recognition module.
本系统包括视频捕获模块，人脸检测模块，特征提取模块及人脸识别模块。
Automatic extraction of motion region in video sequence is critical to the generation of a video object.
视频运动区域的自动提取是视频对象生成的关键。
This paper studies the video text extraction and recognition. The main parts are the algorithm and key technology of text localization, text tracking and text segmentation.
本文研究的是视频文字的提取和识别，主要包括视频文字定位、跟踪和分割三部分算法及关键技术的研究。
The video sequences are processed by the background extraction and adaptation, moving objects detection, shadow detection, eroding and dilating image in order to create the moving pedestrian contour.
首先利用视频图像处理技术实现背景提取、背景更新、移动目标检测。
As to automatic segmentation, these techniques often do not obtain desirable segmentation results because the mathematic model required for the extraction of a video object is difficult to define.
对视频对象自动分割来说，因为提取视频对象所需要的数学模型很难定义，这些技术通常不能获得理想的分割结果。
In the field of video summary and video information retrieval, the problem of key frame extraction is of great importance.
在视频摘要和视频检索领域，研究关键帧提取的问题是非常重要的一环。
Video object extraction has been a most discussed topic in the field of modern information processing.
视频对象提取是现代信息科学领域的一个研究热点。
A novel method of histogram analysis for background extraction of video images was proposed, which was derived from the pixel-based histogram analysis.
在基于像素的直方图分析背景提取的基础上，提出了基于块的直方图分析背景提取方法。
The experimental results show that the key frame extraction algorithm for different types of video is more representative.
实验结果表明，采用该算法对不同类型的视频提取出的关键帧具有较好的代表性。
The experimental results show that the key frame extraction algorithm for different types of video is more representative.
实验结果表明，采用该算法对不同类型的视频提取出的关键帧具有较好的代表性。
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