To address the current issues of inaccurate segmentation and the limited applicability of segmentation methods for building facades in point clouds, we propose a facade segmentation algorithm based on optimal dual-sca...To address the current issues of inaccurate segmentation and the limited applicability of segmentation methods for building facades in point clouds, we propose a facade segmentation algorithm based on optimal dual-scale feature descriptors. First, we select the optimal dual-scale descriptors from a range of feature descriptors. Next, we segment the facade according to the threshold value of the chosen optimal dual-scale descriptors. Finally, we use RANSAC (Random Sample Consensus) to fit the segmented surface and optimize the fitting result. Experimental results show that, compared to commonly used facade segmentation algorithms, the proposed method yields more accurate segmentation results, providing a robust data foundation for subsequent 3D model reconstruction of buildings.展开更多
传统的MVC模式在表示层和业务逻辑层存在大量的数据交换,降低了系统的效率,讨论了在软件开发过程中具体存在的问题,分析了Session Fa ade和Business Delegate两种设计模式的特点,提出将这2种模式和MVC模式结合,形成完善的J2EE开发模式....传统的MVC模式在表示层和业务逻辑层存在大量的数据交换,降低了系统的效率,讨论了在软件开发过程中具体存在的问题,分析了Session Fa ade和Business Delegate两种设计模式的特点,提出将这2种模式和MVC模式结合,形成完善的J2EE开发模式.同时,对J2EE架构中的数据持久层进行分析和改进,提出用DAO类和DAO-Factory类实现数据持久层的方法,形成更完善的J2EE体系结构.展开更多
A microclimatic layer of the green facade is proven to have specific temperature and flow conditions on the building en- velope. Lower temperatures and wind velocities, and higher relative humidity in the microclimati...A microclimatic layer of the green facade is proven to have specific temperature and flow conditions on the building en- velope. Lower temperatures and wind velocities, and higher relative humidity in the microclimatic layer are the characteristics of vertical greenery systems, which cause lower energy consumption for the cooling and heating of buildings. Despite innova- tive architectural solutions, there are some drawbacks to applying vertical greenery on building envelopes. In this study, a bionic facade that mimics the positive effects and eliminates the disadvantages of green facades is presented. The bionic fagade consists of bionic leaves, which are made ofphotovoltaic cells and evaporative matrices. A real scale experiment was carried out in the summer to evaluate the potential of the cooling efficiency of the microclimatic layer and a new photovoltaic cooling technique. The results show a good agreement of the thermal performance between the bionic and the green facade and up to 20.8 K lower surface temperatures of photovoltaic cells, which increase the daily electricity yield by 6.6%.展开更多
文摘To address the current issues of inaccurate segmentation and the limited applicability of segmentation methods for building facades in point clouds, we propose a facade segmentation algorithm based on optimal dual-scale feature descriptors. First, we select the optimal dual-scale descriptors from a range of feature descriptors. Next, we segment the facade according to the threshold value of the chosen optimal dual-scale descriptors. Finally, we use RANSAC (Random Sample Consensus) to fit the segmented surface and optimize the fitting result. Experimental results show that, compared to commonly used facade segmentation algorithms, the proposed method yields more accurate segmentation results, providing a robust data foundation for subsequent 3D model reconstruction of buildings.
文摘传统的MVC模式在表示层和业务逻辑层存在大量的数据交换,降低了系统的效率,讨论了在软件开发过程中具体存在的问题,分析了Session Fa ade和Business Delegate两种设计模式的特点,提出将这2种模式和MVC模式结合,形成完善的J2EE开发模式.同时,对J2EE架构中的数据持久层进行分析和改进,提出用DAO类和DAO-Factory类实现数据持久层的方法,形成更完善的J2EE体系结构.
文摘A microclimatic layer of the green facade is proven to have specific temperature and flow conditions on the building en- velope. Lower temperatures and wind velocities, and higher relative humidity in the microclimatic layer are the characteristics of vertical greenery systems, which cause lower energy consumption for the cooling and heating of buildings. Despite innova- tive architectural solutions, there are some drawbacks to applying vertical greenery on building envelopes. In this study, a bionic facade that mimics the positive effects and eliminates the disadvantages of green facades is presented. The bionic fagade consists of bionic leaves, which are made ofphotovoltaic cells and evaporative matrices. A real scale experiment was carried out in the summer to evaluate the potential of the cooling efficiency of the microclimatic layer and a new photovoltaic cooling technique. The results show a good agreement of the thermal performance between the bionic and the green facade and up to 20.8 K lower surface temperatures of photovoltaic cells, which increase the daily electricity yield by 6.6%.
