نتایج جستجو برای: temporal filter

تعداد نتایج: 362002  

1999
Aylin Yener Roy D. Yates Sennur Ulukus

CDMA systems are limited by the interference that users create for each other. Several methods of controlling and/or suppressing the interference through power control, multiuser detection (temporal filtering) and beamforming (spatial filtering) are studied to increase the capacity of CDMA systems [ 1-31. We investigate the capacity increase that is possible by combining power control with inte...

2017
Min-Seok Lee Sang Wook Park Moon Gi Kang

In this paper, a spatio-spectral-temporal filter considering an inter-channel correlation is proposed for the denoising of a color filter array (CFA) sequence acquired by CCD/CMOS image sensors. Owing to the alternating under-sampled grid of the CFA pattern, the inter-channel correlation must be considered in the direct denoising process. The proposed filter is applied in the spatial, spectral,...

Journal: :The Journal of the Acoustical Society of America 2015
Marc René Schädler Birger Kollmeier

To test if simultaneous spectral and temporal processing is required to extract robust features for automatic speech recognition (ASR), the robust spectro-temporal two-dimensional-Gabor filter bank (GBFB) front-end from Schädler, Meyer, and Kollmeier [J. Acoust. Soc. Am. 131, 4134-4151 (2012)] was de-composed into a spectral one-dimensional-Gabor filter bank and a temporal one-dimensional-Gabor...

2015
Sungho Kim

This paper presents a method for detecting high-speed incoming targets by the fusion of spatial and temporal detectors to achieve a high detection rate for an active protection system (APS). The incoming targets have different image velocities according to the target-camera geometry. Therefore, single-target detector-based approaches, such as a 1D temporal filter, 2D spatial filter and 3D match...

2016
Xu Cao Yang Li Yonghua Zhan Xueli Chen Fei Kang Jing Wang Jimin Liang

Cerenkov luminescence imaging (CLI) can provide information of medical radionuclides used in nuclear imaging based on Cerenkov radiation, which makes it possible for optical means to image clinical radionuclide labeled probes. However, the exceptionally weak Cerenkov luminescence (CL) from Cerenkov radiation is susceptible to lots of impulse noises introduced by high energy gamma rays generatin...

2000
Aylin Yener Roy D. Yates Sennur Ulukus

CDMA systems are interference limited and therefore efficient interference management is necessary to enhance the capacity of a CDMA system. In this paper; we consider combining two effective receiver based interjerence management strategies: multiuser detection (temporal filtering) and receiver beamfoming (spatial$ltering). We formulate and examine the performunee of several linear filter stru...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2007
Andreas Sigfridsson Mats T. Andersson Lars Wigström John-Peder Escobar Kvitting Hans Knutsson

Studies of myocardial motion using magnetic resonance imaging usually require multiple breath holds and several methods have been proposed in order to reduce the scan time. Rapid imaging using k-t BLAST has gained much attention with its high reduction factors and image quality. Temporal smoothing, however, may reduce the accuracy when assessing cardiac function. In the present work, a modified...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 1995
T Yeh B B Lee J Kremers

The temporal response of cone inputs to macaque retinal ganglion cells were compared with cone-specific sinusoidal modulation used to isolate each cone type. For all cell types of the parvocellular (PC) pathway, temporal responsivity was similar for short (S)-, middle (M)-, and long (L)-wavelength-sensitive cone inputs, apart from small latency differences between inputs to center and surround....

2007
Peter Bannister Stephen Smith Michael Brady David Flitney Mark Woolrich

Temporal filtering of fMRI images is an important part of the process of preparing the data for clinical examination. We are able to reduce noise accumulated from both exogenous and intrinsic sources during scanning by applying a filter to the time series. This paper summarizes the testing methods and results found from the evaluation of linear and non-linear temporal filtering methods used in ...

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