简介:在总结JPEG2000标准定义的两种感兴趣区域(ROI)编码思想优缺点的基础上,提出一种新的ROI编码方法,即部分背景系数位平面位移算(PartialBackgroundCoefficientBitplanesShift,PBCBShift)。将背景系数的整个位平面分成两个部分:最重要位平面和剩余位平面。在编码器端,仅仅是背景系数的剩余位平面朝最不重要位平面方向下移。在解码器端,较高的位平面能比剩余位平面更快地解码。
简介:<正>NatureandaimoftheGroupGorporationChinaHydropowerEngineeringConsultingGroupCorporationsetupattheendof2002withtheapprovaloftheStateCouncilhadrestructuredsevenresearchinstitutesofinvestigationanddesign(Beijing,EastChina,Northwest,Mid-south,Chengdu,Guiyang,Kunminginstitutes)andChinaWaterResourcesandHydropowerConstructionEngi-
简介:<正>ChinaPowerEngineeringConsultingGroupCorporationestablishedonthefoundationofChinaPowerEngineering(Group)CompanyLtd.affiliateseightsolely-ownedemterprisesandcompaniesandaninstitution,theyare:Northeast,EastChina,Central-South.NorthwestandSouthwestpowerdesigninstitutes,EngineeringCompanyLtd.underGuohuaNorthChinaPowerDesignIn-stitute,ChinaPowerConstructionConsultationCorporation,ChinaPowerEngineeringConsultation(Group)CompanyLtd,andthePowerPlanningandDesignGeneralInstitute.