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IEEE Transactions on Visualization and Computer Graphics
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#1Tianjia Shao (ZJU: Zhejiang University)H-Index: 9
#2Yin Yang (UNM: University of New Mexico)H-Index: 11
Last. KunZhou (ZJU: Zhejiang University)H-Index: 45
view all 5 authors...
We present a novel spatial hashing based data structure to facilitate 3D shape analysis using convolutional neural networks (CNNs). Our method builds hierarchical hash tables for an input model under different resolutions that leverage the sparse occupancy of 3D shape boundary. Based on this data structure, we design two efficient GPU algorithms namely hash2col and col2hash so that the CNN operations like convolution and pooling can be efficiently parallelized. The perfect spatial hashing is emp...
3 CitationsSource
Motion blur in a photo is the consequence of object motion during the image acquisition. It results in a visible trail along the motion of a recorded object and can be used by photographers to convey a sense of motion. Nevertheless, it is very challenging to acquire this effect as intended and requires much experience from the photographer. To achieve actual control over the motion blur, one could be added in a post process but current solutions require complex manual intervention and can lead t...
1 CitationsSource
#1Jin Xu (ZJU: Zhejiang University)H-Index: 3
#2Yubo Tao (ZJU: Zhejiang University)H-Index: 11
Last. Hai Lin (ZJU: Zhejiang University)H-Index: 12
view all 4 authors...
Dynamic networks evolve with their structures changing over time. It is still a challenging problem to efficiently explore the evolution of dynamic networks in terms of both their structural and temporal properties. In this paper, we propose a visual analytics methodology to interactively explore the temporal evolution of dynamic networks in the context of their structure. A novel diachronic node embedding method is first proposed to learn latent representations of the structural and temporal fe...
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We describe a non-parametric algorithm for multiple-viewpoint video inpainting. Uniquely, our algorithm addresses the domain of wide baseline multiple-viewpoint video (MVV) with no temporal look-ahead in near real time speed. A Dictionary of Patches (DoP) is built using multi-resolution texture patches reprojected from geometric proxies available in the alternate views. We dynamically update the DoP over time, and a Markov Random Field optimisation over depth and appearance is used to resolve an...
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#1Xiaoguang Han (CUHK: The Chinese University of Hong Kong)H-Index: 9
#2Kangcheng Hou (ZJU: Zhejiang University)H-Index: 2
Last. Yizhou Yu (HKU: University of Hong Kong)H-Index: 42
view all 7 authors...
In this paper, we propose the first sketching system for interactively personalized and photorealistic face caricaturing. Input an image of a human face, the users can create caricature photos by manipulating its facial feature curves. Our system first performs exaggeration on the recovered 3D face model, which is conducted by assigning the laplacian of each vertex a scaling factor according to the edited sketches. The mapping between 2D sketches and the vertex-wise scaling field is constructed ...
2 CitationsSource
#1Lei Zhu (CUHK: The Chinese University of Hong Kong)H-Index: 13
#2Xiaowei Hu (CUHK: The Chinese University of Hong Kong)H-Index: 8
Last. Pheng-Ann Heng (CUHK: The Chinese University of Hong Kong)H-Index: 53
view all 5 authors...
Texture smoothing aims to smooth out textures in images, while retaining the prominent structures. This paper presents a saliency-aware approach to the problem with two key contributions. First, we design a deep saliency network with guided non-local blocks (GNLBs) for learning long-range pixel dependencies by taking the predicted saliency map at former layer as the guidance image to help suppress the non-saliency regions in the shallow layer. The GNLB computes the saliency response at a positio...
5 CitationsSource
We propose a novel penalty force to enforce contacts with accurate Coulomb friction. The force is compatible with fully-implicit time integration and the use of optimization-based integration. The contact force is quite general. In addition to processing collisions between deformable objects, the force can be used to couple rigid bodies to deformable objects or the material point method. The force naturally leads to stable stacking without drift over time, even when solvers are not run to conver...
1 CitationsSource
#1Jia Yan (CAS: Chinese Academy of Sciences)H-Index: 1
#2Lei Shi (Beihang University)H-Index: 17
Last. Yang Chen (Fudan University)H-Index: 16
view all 10 authors...
Successfully detecting, analyzing, and reasoning about collective anomalies is important for many real-life application domains (e.g., intrusion detection, fraud analysis, software security). The primary challenges to achieving this goal include the overwhelming number of low-risk events and their multimodal relationships, the diversity of collective anomalies by various data and anomaly types, and the difficulty in incorporating the domain knowledge of experts. In this paper, we propose the nov...
1 CitationsSource
#1Paolo Simonetto (Swansea University)H-Index: 10
#2Daniel Archambault (Swansea University)H-Index: 20
Last. Stephen G. Kobourov (UA: University of Arizona)H-Index: 36
view all 3 authors...
Dynamic graph drawing algorithms take as input a series of timeslices that standard, force-directed algorithms can exploit to compute a layout. However, often dynamic graphs are expressed as a series of events where the nodes and edges have real coordinates along the time dimension that are not confined to discrete timeslices. Current techniques for dynamic graph drawing impose a set of timeslices on this event-based data in order to draw the dynamic graph, but it is unclear how many timeslices ...
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Visual analytics usually deals with complex data and uses sophisticated algorithmic, visual, and interactive techniques. Findings of the analysis often need to be communicated to an audience that lacks visual analytics expertise. This requires analysis outcomes to be presented in simpler ways than that are typically used in visual analytics systems. However, not only analytical visualizations may be too complex for target audience but also the information that needs to be presented. Hence, there...
4 CitationsSource
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