視頻字幕提取與去除算法的研究.pdf

1、西南科技大學(xué)碩士學(xué)位論文視頻字幕提取與去除算法的研究姓名：李芳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：模式識(shí)別與智能系統(tǒng)指導(dǎo)教師：吳斌20090412西南科技大學(xué)碩士研究生學(xué)位論文第1I頁(yè)AbstractCaptionextractionisveryusefulforcontentbasedretrievaltechnologyandaudiovideoinpaintingbecausecaptioninvideocarriesplentyofsema

2、nticinformationAtthesametimeitiSalsosignificantforvideeusingandvideointercommunicationamongdifferentlanguagestemovecaptionsembeddedinvideoandrestorethebackgroundoccupiedbycaptionsUsingthefeatureofdistinctedgecontourexist

3、ingbetweenthecaptionandthebackgroundregionsinvideo，thepaperpresentsanewalgorithmforvideocaptionextractionInthealgorithm，firstly，theedgeimageofcaptionisdetectedbycolorRobertsedgedetectorandbinarization；thentheconnectedare

4、aisacquiredbymorphologicalprocessing，suchasclose、open、horizontaldilation、horizontalerosion；eventually，getfinalcaptionregionusinganewapproachof8connectedcomponentslabelingAftertheextractionofcaptionregionsincolorimages，im

5、ageinpaintingbasedonvariationmodelandtexturesynthesisisusedtoremovecaptionframebyframe，basedofthis，anewapproachispresentedforvideocaptionremovalThismethodtakesfulladvantageoftheinformationbeforecurrentframetocarryoutspac

6、etimeinpainting，andimplementsautomaticcaptionremovalcombinationwithcaptionextractionExperimentsshowthecaptionextractionalgorithmcandetectvariouscolor、variouschangedshapeandvariousorientationcaptioneffectively，thecaptionr

7、emovalalgorithmperformsfairlywellinremovingcaptionwhichdeclinedtheflickerofvideoandimprovingvisualeffectsofinpaintedvideoKeywords：captionextraction；colorRobertsedgedetector；8connectedcomponentslabeling；captionremoval；tex