Depth maps are used for synthesis virtual view in free-viewpoint television （FTV） systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts ...Depth maps are used for synthesis virtual view in free-viewpoint television （FTV） systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps （D-3DV） for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality.展开更多
This paper outlines innovative integrative approaches for poverty alleviation based on integrating planning and processes; crossing disciplines and sectors; combining community perception with spatial technology; and ...This paper outlines innovative integrative approaches for poverty alleviation based on integrating planning and processes; crossing disciplines and sectors; combining community perception with spatial technology; and creating alliances between community and government agencies. Several tools of development models from Participatory Rural Appraisal （PRA） and 3D Mapping Model programs were applied in the planning model to demonstrate a diversity of integrated development and conservation activities, The planning model was launched with a PRA process evolved a simple community map. The map allowed for the community＇s constraints and potential and related issues to be identified and analyzed by different groups. This initiative was followed by a 3D Mapping Model program, which involved the building of a topographic map. Community＇s resources and landmarks and other meaningful landmarks and data were added. These processes allowed an opportunity for creating a historical timeline, assessing the present and mapping the future of community resources. The planning model serves as a meeting point to support and enhance decentralized governance by providing centrality to the needs and decisions of local communities to improve their quality of life. This has been seen through the adoption of natural resources conservation campaigns by local communities, which include the participation of women, displaced people, ~rassroots organizations, and ~overnment a^encies.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.60832003)Key Laboratory of Advanced Display and System Application(Shanghai University),Ministry of Education,China(Grant No.P200902)the Key Project of Science and Technology Commission of Shanghai Municipality(Grant No.10510500500)
文摘Depth maps are used for synthesis virtual view in free-viewpoint television （FTV） systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps （D-3DV） for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality.
文摘This paper outlines innovative integrative approaches for poverty alleviation based on integrating planning and processes; crossing disciplines and sectors; combining community perception with spatial technology; and creating alliances between community and government agencies. Several tools of development models from Participatory Rural Appraisal （PRA） and 3D Mapping Model programs were applied in the planning model to demonstrate a diversity of integrated development and conservation activities, The planning model was launched with a PRA process evolved a simple community map. The map allowed for the community＇s constraints and potential and related issues to be identified and analyzed by different groups. This initiative was followed by a 3D Mapping Model program, which involved the building of a topographic map. Community＇s resources and landmarks and other meaningful landmarks and data were added. These processes allowed an opportunity for creating a historical timeline, assessing the present and mapping the future of community resources. The planning model serves as a meeting point to support and enhance decentralized governance by providing centrality to the needs and decisions of local communities to improve their quality of life. This has been seen through the adoption of natural resources conservation campaigns by local communities, which include the participation of women, displaced people, ~rassroots organizations, and ~overnment a^encies.
