搜索结果: 1-15 共查到“noise reduction”相关记录18条 . 查询时间(0.453 秒)
Practical Fully Homomorphic Encryption without Noise Reduction
Fully Homomorphic Encryption Implementation
2015/12/30
We present a new fully homomorphic encryption (FHE) scheme
that is efficient for practical applications. The main feature of our scheme
is that noise reduction considered essential in current FHE sc...
STUDY ON METHODS OF NOISE REDUCTION IN A STRIPPED IMAGE
Stripped Noise Image Processing Frequency Spectrum MSE PSNR
2015/12/23
Noise is an important factor that influences image quality， which is mainly produced in the processes of image acquirement and transmission. Noise reduction is necessary for us to do image processing ...
Automated Noise Reduction in HRSC Mars DTMs
Extra-terrestrial Mapping DTM Surface Matching Geology Noise Detection
2015/12/17
Since the European Space Agency Mars Express spacecraft entered an orbit around Mars, the High Resolution Stereo Camera (HRSC) placed onboard has been imaging the Martian surface. Due to the character...
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...
SINGLE-AND TWO-CHANNEL NOISE REDUCTION FOR ROBUST SPEECH RECOGNITION IN CAR
automatic speech recognition robustness car noise two-channel noise reduction
2015/9/29
Hands-free operation of a mobile phone in car raises major challenges for acoustic enhancement algorithms and speech recognition engines. This is due to a degradation of the speech signal caused by re...
Comparison of Wavelet and FFT Based Single Channel Speech Signal Noise Reduction Techniques
DWT DWPT wavelet wavelet packet FFT noise control speech enhancement noise cancellation filter
2015/9/29
This paper compares wavelet and short time Fourier transform based techniques for single channel speechsignal noise reduction. Despite success of wavelet denoising of images, it has not yet been widel...
EFFECTS AND PERFORMANCE OF SPECKLE NOISE REDUCTION FILTERS ON ACTIVE RADAR AND SAR IMAGES
RADAR SAR Images Noise Speckle Filtering Adaptive Filter
2015/8/17
Reduction of speckle noise is one of the most important processes to increase the quality of radar coherent images. Image variances
or speckle is a granular noise that inherently exists in and degra...
EFFICIENT NOISE REDUCTION OF LASER SCANNING DATA FOR ARCHAEOLOGICAL SURVEY
Archaeology Topography Laser scanning DEM Automatic
2015/5/25
Recently, a ground based laser scanning sensor is receiving more attention as an useful tool for real-time acquisition of 3D data, and its applications are proposed in various fields. For example, a t...
Comparison of Different Edge Detections and Noise Reduction on Ultrasound Images of Carotid and Brachial Arteries Using a Speckle Reducing Anisotropic Diffusion Filter
Carotid Artery Brachial Artery Immature Thymocyte-Specific Antigen (IMT)
2015/10/14
Background: Common carotid artery (CCA) ultrasound with measurement of intima-media thickness (IMT) is a safe and noninvasive technique for assessing subclinical atherosclerosis and determining cardio...
ATMOSPHERIC LIDAR NOISE REDUCTION BASED ON ENSEMBLE EMPIRICAL MODE DECOMPOSITION
LIDAR Analysis Algorithms Atmosphere Detection
2014/4/29
As an active remote sensing instrument, lidar provides a high spatial resolution vertical profile of aerosol optical properties. But the effective range and data reliability are often limited by vario...
SIGNAL NOISE REDUCTION BASED ON WAVELET TRANSFORM IN TWO-WAVELENGTH LIDAR SYSTEM
LIDAR Data mining Proceedings Algorithms Estimation
2014/4/29
Nowadays lidar has become a leading edge technology for photogrammetry and remote sensing. A new lidar with two detection wavelengths was presented in this paper. The two-wavelength lidar can obtain s...
Cavity-enhanced atom detection with cooperative noise reduction
Cavity-enhanced atom detection cooperative noise reduction
2010/10/20
An optical microcavity with small mode radius is used to measure the local density of a cold
atom cloud. Atom densities below 1 per cavity mode volume are measured with signals near the
photon shot-...
Noise Reduction of OCDM Signals by Electrical Time Gating
Noise Reduction OCDM Signals Electrical Time Gating
2015/6/9
To reduce the MAI noises from the received OCDM signals, a new electrical time gating method has been designed and evaluated. The results show a bit-error rate improvement of up to over 10 8 .
Noise reduction for digital holograms in a discrete cosine transform (DCT) domain
digital hologram noise reduction discrete cosine transform holographic reconstruction
2011/5/9
This paper presents a method for reducing noise in a digital hologram, which occurs during
acquisition. The algorithm proposed initially transforms a digital hologram into frequency-domain
data thro...
Acoustic Noise Reduction in Single Phase SRM Drives by Random Switching Technique
Single phase switched reluctance motor (SRM) harmonic spread factor (HSF) random switching technique
2010/2/2
It is known that if harmonic spectra are decreased, then
acoustic noise also decreased. Hence, this paper deals with a new
random switching strategy using DSP TMS320F2812 to decrease the
harmonics ...