搜索结果: 1-13 共查到“信息与通信工程 Wavelet”相关记录13条 . 查询时间(0.171 秒)
A Watermarking Algorithm for Vector Spatial Geo-Data Based on Integer Wavelet Transform
Digital Watermarking Vector Geo-Spatial Data Integer Wavelet Transform Robust
2015/12/11
Considering the characteristic of vector geo-spatial data for digital watermarking, this paper presents a new watermarking algorithm for vector geo-spatial data based on integer wavelet transform. By ...
An Insitu Single-pointed Wavelet-Based Method for Noise Reduction in SAR Images
Synthetic Aperture Radar (SAR) Speckle noise Insitu Single-pointed Wavelet-based (ISPW) Method,
2015/11/20
Speckle noise caused by interference of electromagnetic waves complicates Synthetic aperture radar (SAR) images to be interpreted and further practical application, therefore reducing speckle noise an...
Wavelet Speckle Reduction for SAR Imagery Based on Edge Detection
Image processing Filtering Feature detection Geography Image understanding
2015/11/20
This paper introduces a wavelet transform speckle reduction algorithm for Synthetic Aperture Radar (SAR) imagery based on edge detection. Existing speckle algorithm can efficiently reduce the speckle ...
Wavelet analysis of the LF radio signals collected by the European VLF/LF network from July 2009 to April 2011
Radio Network Wavelet precursors
2015/8/24
In 2008, a radio receiver that works in very low frequency (VLF; 20-60 kHz) and LF (150-300 kHz) bands was developed by an Italian factory. The receiver can monitor 10 frequencies distributed in these...
Open Quotient Measurements Based on Multiscale Product of Speech Signal Wavelet Transform
Open Quotient Measurements Multiscale Product Speech Signal Wavelet Transform
2009/9/4
This paper describes a multiscale product method (MPM) for open quotient measure in voiced speech. The method is based on determining the glottal closing and opening instants. The proposed approach co...
Psychoacoustic Music Analysis Based on the Discrete Wavelet Packet Transform
Psychoacoustic Music Analysis Discrete Wavelet Packet Transform
2009/9/4
Psychoacoustical computational models are necessary for the perceptual processing of acoustic signals and have contributed significantly in the development of highly efficient audio analysis and codin...
Wavelet Based Distributed Video Coding with Spatial Scalability
Video Coding Spatial Scalability
2010/12/20
In this paper, an improved spatial scalable wavelet domain distributed video coding (DVC) scheme is proposed. In this scheme, we adaptively apply differential pulse code
modulation (DPCM) Wyner-Ziv (...
Accurately Weighting Subbands in Temporal Wavelet Transform
Accurately Weighting Subbands Temporal Wavelet Transform
2010/12/16
Wavelet-based scalable video coding is a promising technique for streaming video applications,especially the Motion Compensated Temporal Filtering (MCTF). It usually decomposes the input video frames...
Abstract—This paper proposes a distributed video coding scheme based on the zerotree entropy (ZTE) coding. Wyner- Ziv theory on source coding with side information is taken as
the basic coding princi...
Architectures of incorporating MPEG-4 AVC into three-dimensional wavelet video Coding,
MPEG-4 AVC three-dimensional wavelet video Coding
2010/12/14
3D subband video coding provides an elegant fulldimensional solution for scalable video coding. However,
due to the Motion-Compensated Temporal Filtering (MCTF) with open-loop structure and no good r...
Steganalysis of images created in wavelet domain using quantization modulation
Steganalysis images created wavelet domain
2010/12/14
The goal of steganography is to avoid drawing suspicion in the transmission of multi-medium hidden message. But some evil may use medium to carry out some uncontrolled and unlimited information The mu...
Constraint Shape Model Using Edge Constraint And Gabor Wavelet Based Search
Constraint Shape Model Edge Constraint Gabor Wavelet
2010/12/14
Constraint Shape Model is proposed to extract facial feature using two different search methods for
contour points and control points individually. In the proposed algorithm, salient facial features,...
ON THE HARMONICS REDUCTION USING WAVELET BASED SIGNAL PROCESSING
harmonic reduction wavelet analysis active filter
2010/1/13
This paper presents a method for calculating the reference currents needed for
the command of an active filter. By using the Discrete Wavelet Transform (DWT) the
high-frequency components of the cur...