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检索条件"机构=Biomedical Engineering and Instrumentation Program"
95 条 记 录,以下是1-10 订阅
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Approximation power of biorthogonal wavelet expansions
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 1996年 第3期44卷 519-527页
作者: Unser, M Biomedical Engineering and Instrumentation Program National Institutes of Health Bethesda MD USA
This paper looks at the effect of the number of vanishing moments on the approximation power of wavelet expansions, The Strang-Fix conditions imply that the error for an orthogonal wavelet approximation at scale alpha... 详细信息
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MECHANISMS FOR ELECTRICAL-STIMULATION OF EXCITABLE TISSUE
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CRITICAL REVIEWS IN biomedical engineering 1994年 第3-4期22卷 253-305页
作者: ROTH, BJ Biomedical Engineering and Instrumentation Program National Institutes of Health Bethesda Maryland 20892 USA.
Electric fields excite electrically active tissue by several mechanisms. A long, straight, uniform fiber is polarized by an activating function, proportional to the axial gradient of the axial electric field. During u... 详细信息
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CRYOELECTRON ENERGY-LOSS SPECTROSCOPY - OBSERVATIONS ON VITRIFIED HYDRATED SPECIMENS AND RADIATION-DAMAGE
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ULTRAMICROSCOPY 1995年 第1-4期59卷 71-79页
作者: LEAPMAN, RD SUN, SQ Biomedical Engineering and Instrumentation Program NCRR National Institutes of Health Bethesda MD 20892 USA.
Valence electron energy loss spectroscopy (EELS) has been used to characterize the composition of frozen-hydrated specimens in the electron microscope. Fine structure in the energy range up to 30 eV provides a means o... 详细信息
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A review of wavelets in biomedical applications
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PROCEEDINGS OF THE IEEE 1996年 第4期84卷 626-638页
作者: Unser, M Aldroubi, A Biomedical Engineering and Instrumentation Program Nauonal Center for Research Resources National Institutes of Health Bethesda MD USA
In this paper we present an overview of the various uses of the wavelet transform (WT) in medicine and biology. We start by describing the wavelet properties that are the most important for biomedical applications. In... 详细信息
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ON THE OPTIMALITY OF IDEAL FILTERS FOR PYRAMID AND WAVELET SIGNAL APPROXIMATION
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 1993年 第12期41卷 3591-3596页
作者: UNSER, M Biomedical Engineering and Instrumentation Program National Center for Research Resources National Institutes of Health Bethesda MD USA
The reconstructed lowpass component in a quadrature mirror filter (QMF) bank provides a coarser resolution approximation of the input signal. Since the outputs of the two QMF branches are orthogonal, the transformatio... 详细信息
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CLASSIFICATION OF NATURAL TEXTURES BY MEANS OF 2-DIMENSIONAL ORTHOGONAL MASKS - COMMENTS
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 1991年 第4期39卷 1005-1006页
作者: UNSER, M Biomedical Engineering and Instrumentation Program National Institutes of Health DHHS Bethesda MD USA
The correspondence of Cohen et al. describes a texture analysis method that is a special use of the approach reported in [3]. Moreover, the derivation of the optimum set of masks presented by these authors is based on... 详细信息
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A FAMILY OF POLYNOMIAL SPLINE WAVELET TRANSFORMS
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SIGNAL PROCESSING 1993年 第2期30卷 141-162页
作者: UNSER, M ALDROUBI, A EDEN, M Biomedical Engineering and Instrumentation Program National Center for Research Resources National Institutes of Health Bethesda MD 20892 USA
This paper presents an extension of the family of orthogonal Battle/Lemarie spline wavelet transforms with emphasis on filter bank implementation. Spline wavelets that are not necessarily orthogonal within the same re... 详细信息
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POLYNOMIAL SPLINE SIGNAL APPROXIMATIONS - FILTER DESIGN AND ASYMPTOTIC EQUIVALENCE WITH SHANNONS SAMPLING THEOREM
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IEEE TRANSACTIONS ON INFORMATION THEORY 1992年 第1期38卷 95-103页
作者: UNSER, M ALDROUBI, A EDEN, M Biomedical Engineering and Instrumentation Program National Center of Research Resources National Institutes of Health DHHS Bethesda MD USA
The least-squares polynomial spline approximation of a signal g(t) is-an-element-of L2(R) is obtained by projecting g(t) on S(n)(R) (the space of polynomial splines of order n). We show that this process can be linked... 详细信息
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ON THE ASYMPTOTIC CONVERGENCE OF B-SPLINE WAVELETS TO GABOR FUNCTIONS
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IEEE TRANSACTIONS ON INFORMATION THEORY 1992年 第2期38卷 864-871页
作者: UNSER, M ALDROUBI, A EDEN, M Biomedical Engineering and Instrumentation Program National Center of Research Resources National Institutes of Health DHHS Bethesda MD USA
A family of nonorthogonal polynomial spline wavelet transforms is considered. These transforms are fully reversible and can be implemented efficiently. The corresponding wavelet functions have a compact support. It is... 详细信息
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A GENERAL SAMPLING THEORY FOR NONIDEAL ACQUISITION DEVICES
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 1994年 第11期42卷 2915-2925页
作者: UNSER, M ALDROUBI, A Biomedical Engineering and Instrumentation Program National Center for Research Resources National Institutes of Health DHHS Bethesda MD USA
We first describe the general class of approximation spaces generated by translation of a function rho(x), and provide a full characterization of their basis functions. We then present a general sampling theorem for c... 详细信息
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