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| 1 | A binocular parallel rendering method for VR globes显示文摘The scene-rendering mechanism based on binocular vision is one of the key techniques for the VR globe to achieve immersion-type visualization of global 3D scenes.However,this special rendering mechanism also requires that the 3D scene is continuously drawn twice within one frame,which significantly affects the rendering efficiency of VR globes.Therefore,we propose a binocular parallel rendering method.This method first improves the current rendering process of VR globes by assigning the rendering tasks for the left and right camera of VR to be processed on different CPU cores,thereby achieving parallel rendering of binocular scenes.Second,due to the problem of inconsistent resolution of binocular scenes caused by different viewpoints for the left and right cameras,we propose a resolution synchronize algorithm.this algorithm conducts realtime synchronization on the resolution of scene in the rendering process and thus avoids the problem of erroneous binocular stereo matching.Finally,we validate the effectiveness of the method in this paper through experiments.The results of experiments indicate that while the method in this paper can ensure the consistency of binocular scene resolution,it can decrease the frame time of VR globes by approximately 27%on average. | Wumeng Huang Jing Chen Mengyun Zhou | 2020 | International Journal of Digital Earth2020，13，9： | 1 |
| 2 | Biosorption of Zn(II) by live and dead cells of Streptomyces ciscaucasicus strain CCNWHX 72-14显示文摘 | Huifen Li Yanbing Lin Wumeng Guan Jiali Chang Lin Xu Junkang Guo Gehong Wei | 2010 | Journal of Hazardous Materials2010，，1： | 1 |
| 3 | Wavelet Image Encryption Algorithm Based on AES显示文摘Traditional encryption techniques have some limits for multimedia information, especially image and video, which are considered only to be common data. In this paper, we propose a wavelet based image encryption algorithm based on the Advanced Encryption Standard, which encrypts only those low frequency coefficients of image wavelet decomposition. The experimental results are satisfactory. | WUMeng YANGNing-jian | 2002 | The Journal of China Universities of Posts and Telecommunications2002，9，4： | 0 |
| 4 | A multi-scale VR navigation method for VR globes显示文摘The combination of virtual reality(VR)and virtual globes–VR globes–enables users to not only view virtual scenes in an immersive manner at any location on Earth but also directly interact with multi-scale spatial data using natural behaviors.It is an important direction for the future development of 3D GIS and geovisualization.However,current VR navigation are primarily based on small real spaces.For virtual globes,which are 3D multi-scale globe environment,the realization of VR navigation in the multi-scale virtual globe space within a limited real space is the first problem that needs to be addressed.A multi-scale VR navigation method that consists of two algorithms is proposed in this study.The first algorithm maps the real space to the virtual globe space and connects the VR user with the VR viewpoint.The second algorithm is an octree structure-based viewpoint correction algorithm that is proposed to correct the location of the moving VR viewpoint in real time.The proposed method is validated by experimentation.The experimental results indicate that the proposed method enables a VR user to interactively view the 3D multi-scale globe environment and lays a foundation for human–computer interaction in VR globes. | Wumeng Huang Jing Chen | 2019 | International Journal of Digital Earth2019，12，2： | 0 |
| 5 | A virtual globe-based time-critical adaptive visualization method for 3D city models显示文摘3D city models,which are important items of content on the virtual globe,are characterized by complicated structures and large amounts of data.These factors make the visualization of 3D city models highly dependent upon the performance of computer hardware.Thus,achieving the efficient rendering of 3D city models using different hardware performance levels represents one of the key problems currently facing researchers.This paper proposes a time-critical adaptive visualization method that first estimates the possible rendering time for each model according to the data structure of the model in addition to the CPU/GPU performance of the computer.It then dynamically adjusts the rendering level for each model based on the results of an estimation of the rendering time to ensure that the final scene can be completed within a given time.To verify the effectiveness and flexibility of this method,it is applied using different computers.The results show that the adaptive visualization method presented in this paper not only can adapt to computers with different levels of performances but also demonstrates an obvious improvement in the time estimation precision,visual effects,and optimization speed relative to existing adaptive visualization methods. | Wumeng Huang Jing Chen | 2018 | International Journal of Digital Earth2018，11，9： | 0 |
| 6 | Fuzzy Mapping Network Using Hierarchical Genetically Learning Rules显示文摘This paper presents a novel architecture for the approximate reasoning-based Fuzzy Adap- tive Mapping Network (FAMN). The FAMN includes two components: (a)Fuzzy inference Network,which is composed of a three-layer network according to the structure of employed rules; (b) Rules Learning Adapter, witch is used to adjush the membership function of rules forth the serial genetic algorithm. In particular, unlike other adaptive learning methods, learning is achieved by incor- porating the idea of multiple resolution. The tuning is first implemented forth few rules at the coarsest resolution of input/output variables, then with many rules at the higher resolution until the training precise required is obtained. The 2-D sine function net is constructed as an illustrative example. The remits have shown the proposed learning algorithm has better performance. | WuMeng HeZhenya 等 | 1994 | The Journal of China Universities of Posts and Telecommunications1994，1，1： | 0 |
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