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镜头边界检测

镜头边界检测的相关文献在2000年到2022年内共计170篇,主要集中在自动化技术、计算机技术、无线电电子学、电信技术、数学 等领域,其中期刊论文123篇、会议论文9篇、专利文献1151900篇;相关期刊73种,包括科学技术与工程、西安电子科技大学学报(自然科学版)、中国图象图形学报等; 相关会议9种,包括第六届中国信息和通信安全学术会议(CCICS'2009)、第二十二届全国计算机信息管理学术研讨会、第七届全国信号与信息处理联合会议暨首届全国省(市)级图象图形学会联合年会等;镜头边界检测的相关文献由378位作者贡献,包括姬红兵、韩冰、高新波等。

镜头边界检测—发文量

期刊论文>

论文:123 占比:0.01%

会议论文>

论文:9 占比:0.00%

专利文献>

论文:1151900 占比:99.99%

总计:1152032篇

镜头边界检测—发文趋势图

镜头边界检测

-研究学者

  • 姬红兵
  • 韩冰
  • 高新波
  • 丰洪才
  • 孙锬锋
  • 方之昕
  • 蒋兴浩
  • 吴亚东
  • 周源华
  • 周艺华
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 白慧茹
    • 摘要: 镜头边界检测是视频检索的基础,检测算法的好坏将对视频检索效率产生直接影响.通过对当前一些现有的镜头检测算法分析,本文提出了基于多特征融合的自适应双阈值镜头检测算法.经过实验表明,该方法不仅可以有效提取出视频图像中代表主要内容的特征,而且能够对视频中的突变镜头和渐变镜头进行高效检测,具有更高的查全率和查准率.
    • 陈绣瑶
    • 摘要: 为了提高视频的识别检测速度,提出基于融合特征的网络不良视频识别框架.先分离视频音频,利用MFCC特征匹配筛查部分恐怖视频,减少视频图像提取、识别总量,以达到提高检测速度目的;再通过OpenCV视觉软件库,结合颜色直方图+SURF算法进行视频镜头边界检测及MoSIFT特征、颜色信息等其他视频特征的检测,在保证识别准确率的基础上进一步提升视频检测速率.
    • 朱威; 商明将; 荣意; 冯杰
    • 摘要: 镜头边界检测是智能视频检索的一个重要环节.现有的检测方法主要是在像素域进行处理,切变检测精度不高,计算复杂度过大.针对这些问题,文中利用解析HEVC码流得到的编码信息,提出了一种基于HEVC压缩域的镜头边界检测方法.首先统计每帧编码信息中各类预测模式的PU个数,并根据CU深度对运动矢量进行幅值滤波;然后采用PU预测模式、运动矢量和帧比特数对切变候选帧进行两级筛选,再对其进行自适应阈值的镜头切变检测;接着根据切变帧对视频序列进行分段,并在时域上对帧比特数进行平滑滤波;最后使用PU预测模式和经滤波平滑后的帧比特数对分段视频进行镜头渐变检测.实验结果表明,该方法具有良好的镜头边界检测效果,并具有较低的计算复杂度.
    • 王瑞佳; 牛之贤; 宋春花; 牛保宁
    • 摘要: 镜头边界检测是基于内容视频检索的基础环节.由于视频类型与内容众多,目前镜头边界检测中存在阈值选取困难、查全率和查准率不高等问题.针对以上问题提出一种改进的基于互信息量的镜头边界检测算法,在字幕检测定位算法有效定位字幕区域的基础上,通过比较非字幕、非四角区域HSV空间直方图求取的相邻帧间互信息量的差异程度,实现镜头边界检测.实验表明,与当前应用最广泛且比较有效的双阈值算法相比,突变镜头检测综合性能平均提高12.4%,渐变镜头检测综合性能平均提高8.2%,通过自适应阈值的选取,有效解决了阈值依赖人工经验选取的问题;与当前已提出的基于互信息量的镜头边界检测算法相比,该算法降低了计算复杂度、几乎能检测所有的淡入淡出镜头边界,并使得镜头边界检测具有较高的查全率与查准率.%Shot boundary detection is the basis of content-based video retrieval. At present,many types of video and numerous video content in the shot boundary detection cause the problem that the recall rate and precision rate are not high. In the light of this, an improved shot boundary detection algorithm based on mutual information is proposed,In the basis of the effective position of the caption area detected by the algorithm of video caption detec-tion and localization,The algorithm can realize shot boundary detection by calculating the difference of mutual infor-mation between frames which are in the non-caption and non-triangular area about non-uniform block histogram in HSV space. Compared with the most widely used and more effective dual threshold algorithm,This experiment show that,and the average performance of the algorithm is improved by 12.4%,the average performance of gradual shot detection is improved by 8.2%. Adaptive threshold selection, solve the problem of threshold dependent artificial experience selection effectively. Compared with the shot boundary detection algorithm based on mutual information, This experiment shows that the algorithm can detect almost all fade in and out of the lens boundary,and brings high-er recall rate and precision rate to the shot boundary detection.
    • 蔡轶珩; 胡朝阳; 崔益泽
    • 摘要: It is difficult to get a balance between efficiency and accuracy in news video shot detection algorithm.A fusion algorithm combining global feature and local feature was proposed.First,the relevant theoretical knowledge of shot boundary detection was introduced.Then,the shot boundary recognition algorithm based on the global feature of H-S color histogram and the local feature of SURF feature point were analyzed,and the corresponding steps were set and applied to news video.On this basis,two typical algorithms were merged to form a new boundary detection algorithm.By constructing a video shot detection software platform,the validity of the fusion algorithm was verified.The experimental results show that the fusion algorithm make full use of the advantages of the two algorithms,so that the precision and recall of the news video lens are balanced.Meanwhile,the running time of the program is greatly reduced and the efficiency and accuracy of the algorithm are improved.Finally,a prospect of further optimization of the algorithm is discussed.%针对新闻视频镜头检测算法在高效和准确两个方面的要求很难平衡的问题,提出了一种融合全局特征与局部特征的融合算法.首先介绍了镜头边界检测的相关理论知识.接着,分别对基于H-S颜色直方图这一全局特征,以及尺度不变特征变换(SURF)特征点这一局部特征的镜头边界识别算法进行分析,并应用于新闻视频中进行相应的步骤设定;在此基础上,将两类典型的算法融合形成一种新的镜头边界检测算法.通过构建视频镜头检测软件平台,对其有效性进行验证.实验结果表明:融合算法能够充分发挥两类算法各自的优势,使新闻视频镜头的查准率和查全率指标得到平衡,同时大幅降低程序的运行时间,提高算法的效率和准确性.最后,对该算法进一步优化的方向作了展望.
    • 郑慧君
    • 摘要: 利用MapReduee编程模型并行计算的思想,将视频数据切割成若干个视频片段,分配给若干个任务节点主机进行视频特征值的提取和镜头边界检测.考虑到新闻视频中存在大量的闪光镜头,容易造成误检,用滑动窗口对帧间差异进行分析,修正帧间差值.实验结果表明,改进的镜头算法不仅大大提高镜头检测的效率,还可以有效地避免闪光镜头,取得较好的检测精度.
    • 汪荣贵; 胡健根; 杨娟; 薛丽霞
    • 摘要: 针对现有镜头检测算法在处理运动信息时无法随着帧间差异不同而变化的问题,提出一种基于光流的镜头边界检测方法.依据光流算法对图像间熵计算进行校正,并提出一种光流量化方法.使用量化值与校正熵值判断图像连续性,保留存在镜头切换的候选边界;根据镜头构造的差异提取图像的光度信息与图像间互信息,并提出一种模型匹配的方式进行镜头类型识别.在互信息提取前对图像进行显著区域提取,来增加图像间的差异而保证模型匹配的准确性.实验表明,该检测算法能准确检测镜头边界且有效排除运动干扰.%To solve the problem that motion information in the video is combined to the detection process of the shot boundary, which is to prevent the impact of target movement, camera movement for detection, a shot boundary detection method based on optical flow is proposed. Firstly, motion information in video using optical flow method was detected, which is used to calculate the entropy of adjacent image correction, and a method of optical flow quantization is proposed. The quantization value and corrected entropy is used to determine the continuity of the image, and candidate boundaries are reserved for the presence of a lens switch. Secondly, the image of the photometric information and mutual information between the images are extracted using the difference between the lens structure, and a model matching method is proposed to identify the type of shot. Significant areas of the image are extracted for computing mutual information, which increases the difference between the images and ensures the accuracy of the model matching. The results show that the algorithm can accurately detect the shot boundary, and effectively eliminate the interference of motion.
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