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Despite decades of research, digital hairstyling is still a difficult, long and tedious task. One reason for the absence of efficient and simple, yet accurate hair modeling interfaces is the lack of appropriate interaction metaphors enabling efficient styling functionalities. This paper discusses tool-based interaction metaphors for digital hairstyling applications with a specific focus on haptic...
Both exponential shadow maps and variance shadow maps are efficient shadow maps anti-aliasing algorithms based on pre-filtering, but exponential shadow maps will cause light bleeding, float overflow and penumbra discontinuity problems and variance shadow maps also have serious light bleeding problem. All these prevent their individual use in practice especially in large virtual environment such as...
This paper presented necessary and sufficient condition of moment invariants under general linear transformation. Based on this condition, arbitrary order and dimensional moment invariant sets can be constructed. Due to their linear independence, previous invariants are special cases of them.
The paper presents a new interactive local color transformation method base on GrowCut image segmentation algorithm. The method improves Maslennikova et al's CIM based color transformation algorithm by using coupled map lattices (CML). An intuitive and easy user interface is also supported. User just needs to draft some trails both in reference and target image to make the local color matched. The...
This paper presents a novel approach for real-time photo style transfer. The automatic image manipulation technique is performed in the oRGB color space, which is a new color model based on the psychologically opponent color theory. We transfer color from an appropriate source image to the target image using a simple statistical analysis. In addition, we match the global luminance histogram to achieve...
The detailed timing information obtained from design iteration can only be added into synthesis process manually. A new strategy for automatic synthesis of backing marked timing information is presented in this paper. As the carrier of backing marked timing information, the delay statements in VHDL is synthesized in scheduling process. And a new scheduling algorithm is presented in this paper. The...
This paper presents a unified dynamics solver developed by the author which was first released in AutodeskTM MAYA 8.5. The solver however is a standalone library which could potentially be used in other applications. Current dynamics solvers are usually fine tuned for specific effects such as rigid bodies or cloth. Handling the interaction between these solvers is often problematic as one of them...
The pathway throttle and local throttle loss of oil flow in telescopic shock absorber were analyzed, and the pathway loss coefficient and equivalent length of piston holes were studied. According to the thickness and the pre-deformation of throttle slice, and the throttle holes area, the velocity points of valve opening were researched and the analytic formulas of shock absorber velocity when valve...
In this paper, we demonstrate a design of autonomous virtual creatures (called animated robots: Anibots in this paper) and develop a design tool for animated robots. An animated robot can behave autonomously by using its own sensors and controllers on three-dimensional physically modeled environment. The developed tool can enable us to execute the simulation of Anibots on physical environment at any...
This paper presents an algorithm to approximate a solid model by a hierarchical set of bounding ellipsoids having optimal shape and volume approximation errors. The ellipsoid-tree is constructed in a top-down splitting framework. Starting from the root of hierarchy the volume occupied by a given model is divided into k sub-volumes where each is approximated by a volume bounding ellipsoid and will...
Line matching plays an important role in many applications, such as image registration, 3D reconstruction, object recognition and video understanding. However, compared with other features (such as point, region) matching, it has made little progress in recent years. In this paper, we investigate the problem of matching line segments automatically only from their neighborhood appearance, without any...
This paper presents a novel bilateral filtering using fuzzy-median for image manipulations such as denoising and tone mapping. Our proposed bilateral filtering consists of the standard bilateral filter and the estimation of the pixel values by the fuzzy median filter. We have applied the proposed fuzzy filtering for image denoising with both the impulse and Gaussian random noise, which achieves better...
In the past, several approaches have been proposed to produce high quality solid textures. Unfortunately, they often suffer from several synthesis artifacts, such as color blurry, bad texture structures, introducing aberrant voxel colors and so on. In this paper, we present a novel algorithm for synthesizing high quality solid textures from 2D exemplars. We adopt an optimization framework with the...
The seismic data is a kind of high dynamic range data, which is very difficult to realize high-quality visualization. In this paper, we present a new method to scale the high-dynamic-range seismic data for visualization, which can quantize the high-dynamic-range data into the low-dynamic-range data, while preserving the high frequency characteristics of the geological structure. We divide the seismic...
With the development of computer techniques, 3D model has been used more and more widely and content-based 3D model retrieval has been a hotspot in the area of multimedia information retrieval. How to extract 3D models' feature effectively is still a difficulty. Projection based 3D model feature extraction is an important kind in feature extraction, because of its robustness against noise, simplification...
Vertical-Cavity Surface-Emitting Lasers (VCSELs) are a new generation of semiconductor lasers that have many advantages. In this paper, we present a comprehensive circuit-level VCSEL model that addresses the basic spatial and thermal behavior of VCSELs based on the rate equations without sacrificing the numerical efficiency demanded by the circuit-level simulation of optoelectronic systems. The model...
In this paper, we propose a volume rendering method using grid computing for large-scale volume data. Grid computing is attractive because medical institutions and research facilities often have a large number of idle computers. A large-scale volume data is divided into sub-volumes and the sub-volumes are rendered using grid computing. When using grid computing, different computers rarely have the...
The three-dimensional (3D) integration circuit is a new technology with higher integration density. To solve the critical thermal issue in 3D layout, we propose a thermal-driven force-directed floorplanning algorithm. Based on the characteristic of the different stages of floorplanning, this algorithm applies different methods to calculate the thermal distribution to reach a tradeoff between time...
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