The existing H.264/AVC rate control schemes rarely include the perceptual considerations.As a result,the im-provements in visual quality are hardly comparable to those in peak signal-to-noise ratio(PSNR).In this paper...The existing H.264/AVC rate control schemes rarely include the perceptual considerations.As a result,the im-provements in visual quality are hardly comparable to those in peak signal-to-noise ratio(PSNR).In this paper,we propose a perceptual importance analysis scheme to accurately abstract the spatial and temporal perceptual characteristics of video contents.Then we perform bit allocation at macroblock(MB)level by adopting a perceptual mode decision scheme,which adaptively updates the Lagrangian multiplier for mode decision according to the perceptual importance of each MB.Simulation results show that the proposed scheme can efficiently reduce bit rates without visual quality degradation.展开更多
Major disease outbreaks, increasing demand for animal food products, intensification of animal production systems, increased consumer awareness about food quality and safety, as well as heightened consciousness about ...Major disease outbreaks, increasing demand for animal food products, intensification of animal production systems, increased consumer awareness about food quality and safety, as well as heightened consciousness about animal welfare issues has seen the need for more reliable animal identification in Turkey＇s animal production system. Animal identification and traceability systems have seen rapid development in the world＇s main livestock producing nations and have been recognised by the main food, health and livestock trading authorities. The benefit of this system affects all the participants in the food chain （farm to fork） by limiting the spread of animal disease, assuring food safety and quality, minimizing the potential trade loss and minimizing government control. Electronic identification （EID） is one of the main technologies adopted, whereby each individual animal is identified and traced through a unique identification number saved on an electronic transponder （eartag or bolus）. The present animal identification and registration system in Turkey does not use an electronic identification tool and is administered manually which often causes unreliable and incorrect results. Concerns for animal and human health, as well as food safety assurance, have motivated efforts in Turkey to intensify animal identification system. This paper has provided the basis for how animals can be accurately traced and monitored from their birth until their slaughter, tracking every single parameter that could be of interest： animal health history, disease control, milk/meat/wool production and nutrition. This study summarizes information on EID available from around the world, discusses the advantages and challenges in its application in Turkey and provides recommendations as to the systems suitability to upgrade the present status of the Turkish National Livestock Identification System.展开更多
基金Project supported by the Shanghai Key Laboratory of Digital Media Processing and Transmissions,China
文摘The existing H.264/AVC rate control schemes rarely include the perceptual considerations.As a result,the im-provements in visual quality are hardly comparable to those in peak signal-to-noise ratio(PSNR).In this paper,we propose a perceptual importance analysis scheme to accurately abstract the spatial and temporal perceptual characteristics of video contents.Then we perform bit allocation at macroblock(MB)level by adopting a perceptual mode decision scheme,which adaptively updates the Lagrangian multiplier for mode decision according to the perceptual importance of each MB.Simulation results show that the proposed scheme can efficiently reduce bit rates without visual quality degradation.
文摘Major disease outbreaks, increasing demand for animal food products, intensification of animal production systems, increased consumer awareness about food quality and safety, as well as heightened consciousness about animal welfare issues has seen the need for more reliable animal identification in Turkey＇s animal production system. Animal identification and traceability systems have seen rapid development in the world＇s main livestock producing nations and have been recognised by the main food, health and livestock trading authorities. The benefit of this system affects all the participants in the food chain （farm to fork） by limiting the spread of animal disease, assuring food safety and quality, minimizing the potential trade loss and minimizing government control. Electronic identification （EID） is one of the main technologies adopted, whereby each individual animal is identified and traced through a unique identification number saved on an electronic transponder （eartag or bolus）. The present animal identification and registration system in Turkey does not use an electronic identification tool and is administered manually which often causes unreliable and incorrect results. Concerns for animal and human health, as well as food safety assurance, have motivated efforts in Turkey to intensify animal identification system. This paper has provided the basis for how animals can be accurately traced and monitored from their birth until their slaughter, tracking every single parameter that could be of interest： animal health history, disease control, milk/meat/wool production and nutrition. This study summarizes information on EID available from around the world, discusses the advantages and challenges in its application in Turkey and provides recommendations as to the systems suitability to upgrade the present status of the Turkish National Livestock Identification System.
