一種基于形態(tài)學(xué)操作的新聞標(biāo)題條檢測(cè)算法
A Caption Detection Algorithm Based on Morphological Operation
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摘要: 該文提出一種基于形態(tài)學(xué)操作的新聞標(biāo)題檢測(cè)算法。該方法利用了新聞標(biāo)題條出現(xiàn)的時(shí)空特征，在鏡頭分割的基礎(chǔ)上，采取了分類處理的方式和形態(tài)學(xué)的濾波操作，實(shí)現(xiàn)了對(duì)漸變標(biāo)題的檢測(cè)和在全局變化劇烈情況下的標(biāo)題檢測(cè)，并具有定位準(zhǔn)確、規(guī)范化的特點(diǎn)。利用MPEG-7測(cè)試數(shù)據(jù)集進(jìn)行的實(shí)驗(yàn)驗(yàn)證了該算法的優(yōu)越性。
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關(guān)鍵詞:
- 新聞視頻檢索; 新聞標(biāo)題條; 形態(tài)學(xué)操作; 漸變
Abstract: An algorithm of caption detection in news video is proposed in this paper. It makes use of space and time characters of the captions appearing in the video. On the basis of shot boundary detection, this method applies morphological operation and different filter strategies according to different cases. It achieves good results by experiments using MPEG-7 video testing data, especially caption detection in the case of gradual transition and heavy noises on the background. -
熊華,老松楊,吳玲琦,李恒峰,吳玲達(dá),李國(guó)輝.NewsVideoCAR:一個(gè)基于內(nèi)容的視頻新聞節(jié)目瀏覽檢索系統(tǒng).計(jì)算機(jī)工程,2000,26(11):73-75.[2]任金昌,趙榮椿,馮大淦.一個(gè)基于內(nèi)容的數(shù)字新聞檢索系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn).計(jì)算機(jī)應(yīng)用,2001,21(10):49-50.[3]Smith M A, Kanade T. Video skimming and characterization through the combination of image and language understanding techniques. In: Proc. of the IEEE Conference on Computer Vision and Pattern Recognition, Puerto Rico, 1997: 775-781.[4]Li H, Doermann D, Kia O. Automatic text extraction and tracking in digital video[J].IEEE Trans.on Image Processing.2000, 9(1):147-156[5]Sato T, Kanade T, Huges E K, et al.. Video OCR: Indexing digital news libraries by recognition of superimposed caption[J].ACM multimedia system.1999, 7(5):385-395[6]Yeo B L, Liu B. Rapid scene analysis on compressed videos[J].IEEE Trans on Circuits and Systems for Video Technology.1995, 5(6):533-544[7]Boreczky J S, Rowe L A. Comparison of video shot boundary detection techniques. In: Proc.of the SPIE Conference Storage and Retrieval for Video Databases IV, San Diego/La Jolla, CA,USA: SPIE, 1996, 2670: 170-179. -
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