In this paper, we present a framework of view synthesis, including range guided depth refinement and uncertainty-aware aggregation based novel view synthesis. We first propose a novel depth refinement method to improv...
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In this paper, we present a framework of view synthesis, including range guided depth refinement and uncertainty-aware aggregation based novel view synthesis. We first propose a novel depth refinement method to improve the quality and robustness of the depth map reconstruction. To that end, we use a range prior to constrain the estimated depth, which helps us to get more accurate depth information. Then we propose an uncertainty-aware aggregation method for novel view synthesis. We compute the uncertainty of the estimated depth for each pixel, and reduce the influence of pixels whose uncertainty are large when synthesizing novel views. This step helps to reduce some artifacts such as ghost and blur. We validate the performance of our algorithm experimentally, and we show that our approach achieves state-of-the-art performance.
In this work, we propose improvements on a state-of-the-art scheme for progressive triangular mesh compression, which is based on hierarchical vertex clustering. Specifically, we fix several shortcomings of that schem...
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In this work, we propose improvements on a state-of-the-art scheme for progressive triangular mesh compression, which is based on hierarchical vertex clustering. Specifically, we fix several shortcomings of that scheme including quantization error accumulation, false facet generation and lack of facet orientation encoding. In addition, the resultant mesh encoder yields better rate-distortion performance than another state-of-the-art one on our test model, as demonstrated by the experiments.
Planning a spacecraft requires the expert knowledge from diverse disciplines, such as propulsion or structure. Reliable communication between the experts is crucial, as the individual requirements of a satellite's...
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ISBN:
(纸本)9781457705564
Planning a spacecraft requires the expert knowledge from diverse disciplines, such as propulsion or structure. Reliable communication between the experts is crucial, as the individual requirements of a satellite's various subsystems heavily depend on each other. Today, early mission design sessions are often held in specially designed rooms, so-called concurrent engineering facilities. Here, the experts come together and directly discuss with each other in a shared place, enabling them to find a common ground much quicker. Nevertheless, in certain aspects it remains difficult for the experts to share and describe their knowledge within the team. In particular for configuration purposes it is a hurdle to verbally discuss positions and orientations of different parts. We propose a new approach of using shared interactive visualization for the configuration task, which enables every engineer to individually place parts and to alter it in case of discrepancies.
In order to understand more details of anodic bubble formation, coalescence and movement mechanism under the horizontal anode bottom, a population balance model (PBM) was used to calculate the anodic bubble size distr...
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Capturing and retaining the attention of students while learning complex topics like modeling and simulation is a critical task. In discrete-event simulation (DES), educators rely on examples like queueing systems in ...
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The development and growth of the shared economy in the smart cities are significantly influenced by technology. An online community-based ecosystem that enables peer-to-peer trade between buyers and sellers as well a...
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The fluid flow, heat and mass transfer in the blast furnace shaft was simulated, based on CFD software Fluent. The temperature distributions of gas and burden within the furnace are numerically predicted with non-equi...
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The fluid flow, heat and mass transfer in the blast furnace shaft was simulated, based on CFD software Fluent. The temperature distributions of gas and burden within the furnace are numerically predicted with non-equilibrium thermodynamic theory. The three-interface unreacted shrinking core model is adopted to describe the reduction of iron ore proceeds, and the porosity varies with the burden composition. The burden structure is calculated by the burden distribution model, and the inlet boundary condition is calculated by the numerical simulation of injected pulverized coal combustion in the raceway. In this study, the distributions of velocity, temperature, gas species and shape of the cohesive zone are predicted. simulation results of operational parameters are compared with measured data, with the absolute error of 3.79% for top gas CO efficiency, 5.78% for the top gas temperature distribution along the throat radius and 4.15% for the pressure drop. It is possible to numerically predict the operational parameters under the given conditions accurately.
Auxiliary fuel injection is a widely adopted mechanism to reduce the amount of coke consumed in the blast furnace ironmaking process. Operating parameters exert significant influence on the total fuel efficiency of th...
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Auxiliary fuel injection is a widely adopted mechanism to reduce the amount of coke consumed in the blast furnace ironmaking process. Operating parameters exert significant influence on the total fuel efficiency of the blast furnace, and even minor changes can lead to significant operating cost reductions. Ironmaking plants constantly endeavor to improve the efficiency of blast furnace operations through the co-injection of PCI and natural gas(NG). A variety of previously developed numerical modeling techniques for the simulation of phenomena inside the blast furnace were utilized to model a variety of operating conditions and geometries inside an industry-scale blast furnace located at Arcelor Mittal's Indiana Harbor plant. Through a series of parametric studies, including adjustments to injection lance insertion depth, significant insight into the impacts of varying injection parameters on the furnace operation efficiency have been generated. The optimized injection parameters from the model simulations were then recommended for the actual furnace trials and validation.
A novel scheme for single-rate compression of material and texture attributes for triangular meshes is proposed in this work. For the material coding, it proposes a novel approach based on breadth-first surface traver...
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ISBN:
(纸本)9781479947607
A novel scheme for single-rate compression of material and texture attributes for triangular meshes is proposed in this work. For the material coding, it proposes a novel approach based on breadth-first surface traversal, exploiting the local coherence of the material attributes among neighboring facets;for the texture coordinate coding, it proposes a similar-triangle-based prediction method, exploiting the correlation between 3D geometry and its texture-space parameterization. As a result, the proposed algorithm achieves efficient coding of the material and the texture attributes, as experimentally demonstrated.
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