视频有效视觉特征提取与实验研究
关键词 视频特征 颜色特征 颜色直方图 文本特征
Title Extraction and experimental research about effective
visual feature of video
Abstract
Extraction and experimental research about effective visual feature of
video is an important part in the retrieval system of video. It has positive
significance for retrieval and analysis of video and multimedia industry.
We have a simple explanation about the image features, text features and
audio features of video. Then we focus on the video extraction based on
image features. The image features include color features, texture
features, character recognition, movement characteristics and other
features. In this chapter, we described the characteristics of the image
histogram retrieval, and we carry out a detailed study on the color
characteristics histogram, color cumulative histogram, the color of the
local cumulative histogram and color histogram improved. Also we have a
image retrieval on a picture using MATLAB. Finally, we do a summary and
outlook to provide reference for the development of the extraction of video
feature.
Keywords video features color features color histogram text features
目 次
1 引言. 1
1.1 研究背景 1
1.2 本课题的研究目的和意义 . 1
2 视频检索技术的现状.. 3
2.1 QBIC系统 3
2.2 JACOB系统.. 3
2.3 VisuaISEEK系统 3
2.4 CORE系统 4
2.5 综合多特征的检索技术 4
2.6 高层概念和低层特征的关联 .. 4
2.7 高文索引技术 .. 4
2.8 用户接口查询 .. 5
2.9 性能评价 5
3 视频特征 6
3.1 图像特征 6
3.2 文本特征 6
3.3 音频特征 7
4 基于图像特征的视频提取. 8
4.1 颜色特征 8
4.1.1 图像直方图特征检索 .. 12
4.1.1.1 颜色特征直方图 . 12
4.1.1.2 颜色累加直方图 . 14
4.1.1.3 颜色局部累加直方图 14
4.1.1.4 改进的颜色直方图方法 . 15
4.1.2 实验结果 17
4.2 纹理特征 .. 19
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