Images are often contaminated by impulse noise. The major drawback of median filtering and its variants - that are widely used for removing impulsive noise - is the blurring effect for large window sizes and low noise...
详细信息
Images are often contaminated by impulse noise. The major drawback of median filtering and its variants - that are widely used for removing impulsive noise - is the blurring effect for large window sizes and low noise suppression for small window sizes. In this paper, a fuzzy-competitive algorithm for removing impulse noise in images is proposed. The proposed algorithm utilized fuzzy inference systems for impulse detection. The detected impulses are then removed using long-range correlation information in a competitive scheme. The experimental results show that the performance of our method in removing impulsive noises is better than that of most other state-of-the-art methods
This paper proposes a new method of face representation which is used for face recognition by SVM. For face representation we have used a two-step method, first two-dimensional discrete wavelet transform (DWT) is used...
详细信息
This paper proposes a new method of face representation which is used for face recognition by SVM. For face representation we have used a two-step method, first two-dimensional discrete wavelet transform (DWT) is used to transform the faces to a more discriminated space and then principal component analysis (PCA) is applied. The proposed method produced a significant improvement which includes a substantial reduction in error rate and in time of processing during the obtaining PCA orthonormal basis.
This paper deals with modeling and analysis for the landing motion of a human-body model. First, the dynamic model of a floating human body and the impact model are derived and the external impulse exerted on the grou...
详细信息
This paper deals with modeling and analysis for the landing motion of a human-body model. First, the dynamic model of a floating human body and the impact model are derived and the external impulse exerted on the ground as well as the internal impulse experienced at the joints of the human body model are investigated. Second, a motion planning algorithm exploiting the kinematic redundancy is suggested to ensure stability in terms of ZMP stability condition during a series of landing phases. Four phases of landing motion are investigated. In simulation, the external and internal impulses experienced at the human joints and the ZMP history resulting from the motion planning are analyzed for two different configurations. A desired landing posture is suggested by comparison of the simulation results.
This paper focuses on genetic optimization and filtering efficiency ofa recently developed class ofWeighted Vector Directional Filters (WVDFs), which minimize the aggregated weighted angular distances between the samp...
详细信息
In this paper, we provide a new noise reduction method for the enhancement of the images of gene chips. We demonstrate that the new technique is capable of reducing outliers present in microarray images while preservi...
详细信息
UTMAC is an object-oriented C++ class library, developed for design, implementation and simulation of multi-agent controllers. Using UTMAC, the control problem under analysis should be decomposed into several partial ...
详细信息
UTMAC is an object-oriented C++ class library, developed for design, implementation and simulation of multi-agent controllers. Using UTMAC, the control problem under analysis should be decomposed into several partial sub-problems to be solved by controller-agents, which can be implemented as reusable entities. UTMAC uses a non-centralized simulation scheme in which cash agent simulates itself. In this paper the structure of UTMAC is explored and design of a simple reusable multi-agent controller is provided to illustrate the work and show the convenience of design and implementation.
AlGaN/GaN double heterostructure high electron mobility transistors (DH-HEMT's) with a 2.0 /spl mu/m gate length and a 4 /spl mu/m channel length, exhibiting good temperature characteristics, have been demonstrate...
详细信息
AlGaN/GaN double heterostructure high electron mobility transistors (DH-HEMT's) with a 2.0 /spl mu/m gate length and a 4 /spl mu/m channel length, exhibiting good temperature characteristics, have been demonstrated. The maximum drain current I/sub ds/ and extrinsic transconductance G/sub m/ are 1300 mA/mm 235 mS/mm, 85.0 mA/mm 174 mS/mm, and 475 mA/mm, 95 mS/mm, respectively at T = -194/spl deg/C, 20/spl deg/C and 400/spl deg/C. The temperature coefficient of I/sub ds/ and G/sub m/ are -1.4 mA//spl deg/C and 0.24 mS//spl deg/C respectively.
This paper reports on the development of a training simulator focusing on voltage control and stability. It has been derived from a quasisteady-state simulation software already used and validated in planning and oper...
详细信息
This paper reports on the development of a training simulator focusing on voltage control and stability. It has been derived from a quasisteady-state simulation software already used and validated in planning and operational planning studies. The computational engine has been provided with a user interface built on the client-server architecture, allowing the simulator to run on a network of PCs in a very flexible way. New displays can be set up easily and quickly. This tool is presently used by Hydro-Quebec to improve the operator's ability to control transmission voltages. Other features, uses and benefits are reported.
In this paper, we consider robust regulation of a class of nonlinear systems, via H∞ controller using singular perturbation approach. First, using normal form equations, we eliminate the nonlinear part of the system ...
详细信息
Images are often contaminated by impulse noise. The major drawback of median filtering and its variants -that are widely used for removing impulsive noise- is the blurring effect for large window sizes and low noise s...
详细信息
暂无评论