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This paper adopts the research methods of speech experiments, to study Tibetan Xiahe dialect vowel pattern. Through the analysis of vowel parameters, studied the pattern and distribution of vowel formant. Finally summarys of Tibetan Xiahe dialect vowel pattern, including the vowel distribution analysis and study of vowel pattern chart.
Under the laboratory environment, speaker recognition has made great progress. But in real life, the performance of speaker recognition system is vulnerable to various factors, especially environmental noise and healthy condition. This paper studies the performance of speaker identification system when the tester suffers from the cold. The cold tends to induce inflammation and swelling of the nasal...
Medical catheter plays a very important role in the minimally invasive cardiac surgery. Doctors want to know the real-time location of a catheter when the catheter is navigating in the heart. This paper studies on simulation of interaction between heart and catheter based on BD tree. The heart data are collected from hospital and a heart model is reconstructed using the Poisson algorithm. The catheter...
Three-dimensional virtual surgery has received a significant amount of attention in recent years. It is necessary to mark organ lesions and add ablation path on virtual organ model. The contribution of this paper is that we propose and implement a new shortest path algorithm based on PLY triangular mesh model. The algorithm follows the topology structure of model and is simple to implement. We add...
Sound rendering are frequently used to enhance the sense of immersion in virtual environments and multimedia applications. For this purpose, this paper proposes a ray tracing method based on equal-area distribution to simulate room impulse response (RIR). It is efficient and accurate to get the direction of arrival of the direct sound and early reflections. An equal-area distribution was adopted in...
This paper makes a study on the simulation on evacuation of pedestrians in a room with one exit and multi-obstacles, based on the lattice gas model and the floor field model. Use the probability of the floor field model to determine the main direction in movement of pedestrian. Then use the local motion rules of the lattice gas model to describe the behaviors of pedestrians. Pedestrians can bypass...
The gesture recognition algorithms have been widely used to realize the human-computer interaction in multimedia applications, but still have limitation of integration due to the computation overhead. For this reason, this paper proposes an acceleration method for the hand gesture recognition algorithm using CGRA. The proposed algorithm enables software pipelining and vectorization for the SRP architecture,...
For the purpose of smooth human-robot interaction, a robot is supposed to be capable of semantically parsing the human instructions in a large scale. However, the existing supervised approaches to learning a large-scale semantic parser needs a good deal of training examples with annotations. The exhaustive cost of annotating enough sentences prevents them from learning such parser for interpreting...
The novel 4- and 8-band linear-phase paraunitary filter banks (LP PUFBs) using quaternion multipliers are presented, which are aimed at a finite-precision implementation. The presented in the given paper LP PUFB offers clean advantages over the known ones are regularity conditions are formulated directly in terms of quaternionic lattice coefficients. Namely, both regularity and losslessness can be...
How to detect pedestrian faster and more accurately based on video is the key to pedestrian detection. A method of pedestrian detection based on a cascade of feature classifiers is proposed in this paper. First, according to the different features between pedestrians and non-pedestrians, several special features are selected. Second, according to AdaBoost classifier training theory, several weak classifiers...
Although Gaussian Mixture Model (GMM) for background modeling can give better results, it is still too slow to be applied to real-time systems. This paper describes two different parallel implementations on GPU to accelerate the GMM for background subtracting (BGS). One is basic GPU implementation using constant memory, which just assigns a GPU thread for each pixel and doesn't do much optimization...
Moment descriptors have been applied in object recognition as the features since the moment method was introduced by Hu [1]. The moment based features capture the global properties of an object rather than the local ones. In this research, a set of Zernike moment based feature vectors is proposed for a Chinese characters recognition system. We have composed three different feature vectors in the four-dimensional...
Perception of images shape is the key point of electrostatic tactile interaction in the field of Virtual Reality and Human-Computer Interaction. In this paper, we present an electrostatic tactile-rendering algorithm for images shape feature under Gaussian bumps, which extracts heights of images shape by using the method of shape from shading. We analyze the force corresponding relationship between...
The first step in FEM-based deformation is voxelization, which means objects showed in original mesh will be desecrated into mass of small units (voxels), and then the characteristic matrix can be fetched with the coordinate, shape, and attributes of voxels. This paper focuses on the reciprocity between specifying voxel physical parameter and simulating the deformation. A table list out provides physical...
Character animation is important in many applications, such as video games, movie production, and somatosensory interaction. However, it is difficult to control the locomotion of a virtual character in a dynamic environment, because bipeds are under-actuated and unstable. In this paper, we present a novel optimization strategy to improve the realism and stability of virtual character animation. Our...
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