fast scaling technology in video transcoding

fast scaling technology in video transcoding

ID:34783533

大小:1.38 MB

页数:50页

时间:2019-03-10

fast scaling technology in video transcoding_第1页
fast scaling technology in video transcoding_第2页
fast scaling technology in video transcoding_第3页
fast scaling technology in video transcoding_第4页
fast scaling technology in video transcoding_第5页
资源描述:

《fast scaling technology in video transcoding》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库

1、上海师范大学硕士学位论文FastScalingTechnologyInVideoTranscoding姓名:董文涛申请学位级别:硕士专业:计算机应用技术指导教师:张文龙20040401AcknowledgementsIamextremelygratefultoProfessorZhangWenLong,forhisexcellentguidance,constantencouragement,andsupportduringthecourseofmystudy.ProfessorWangYaoMing,Yo

2、uWeiYan,LiLi,HuJinChualsoimpartsomuchknowledgetome.Aslo,Iappreciatemyroommates:DuanXinTao,ZhangPeiJun,/rioandmyclassmatesQinXiaoLing,ChangZhiGuo,HuZiHui,etc.TheyhavemademylifeandstlldyatSHNUanenjoyableexperience.Lastofall,Itakethisopportunitytothankmycolle

3、ague:SeniorScientistZhangDaQing,Kelvin.Zhang,Kelvin.Wang,Jim.J.Wang,ChenNingJiang,WanXin,ZengYongQin,Simon@OpticalStorage&DigitalTVDepartment,Cathy.sLTong@HRandothermembersfromPhilipsResearchEastAsia(PREA),NalinfromPhilipsDigitalSystemLab(PDSL).ABSTRACTFas

4、timagescalingwithhighfidelityplaysakeyroleinvideoprocessingandcodecbyprovidingvariousresolution,reducingbitratestofacilitatevideotransmissionandachievingthebestvisualquailtyatthereceiver.Infact,scalingtechnologyiSanessentialcomponentinmanyimage/videoproces

5、singsuchastomagnify/minifystillimage.toachievespecialeffectlikepicturewin—picture,tocompressortransforindigitalvideowithspatialscalabilityetc.Inthisthesiswemainlyemploythistechnologyinvideotranscoding.whichiSapowerfulbutcomputationallyintensivetoolstoconve

6、rtonekindofvideoformatintoanother,meetingdifferentdemandsuchaslowerbitratesorvariousdisplayterminals.Insum.therearetwokindsofscalingschemes:oneisinspatialdomainandtheotherintransfoITlldomain.nleschemeintransfotindoraainCanprovideverygoodperformance.thatiS.

7、emcientcomputationanddesirableimagequaliW.whereasithassomedisadvantagewhichiSimpossibleorhardlytoovercome,especiallysomescenariosrequkearbitraryratiozoominhorizontalandvertical.andexcellentvisualefbct.However.theotherschemeinspatialdomaincaileasilytackleth

8、eseproblemsviaFIRfilter,providingmorefiexibilityandbetterquality.Notethatweachievethisgoalatexpenseofnumerouscomputationand丹equentmemoryI/0.Actually,itiSnotfeasibletoputSOmuchWOrkloadonscalingwhichiSonlyasubs

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。