搜索结果: 1-11 共查到“工学 Noise reduction”相关记录11条 . 查询时间(0.075 秒)
STUDY ON METHODS OF NOISE REDUCTION IN A STRIPPED IMAGE
Stripped Noise Image Processing Frequency Spectrum MSE PSNR
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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
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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,
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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...
EFFECTS AND PERFORMANCE OF SPECKLE NOISE REDUCTION FILTERS ON ACTIVE RADAR AND SAR IMAGES
RADAR SAR Images Noise Speckle Filtering Adaptive Filter
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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
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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...
ATMOSPHERIC LIDAR NOISE REDUCTION BASED ON ENSEMBLE EMPIRICAL MODE DECOMPOSITION
LIDAR Analysis Algorithms Atmosphere Detection
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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
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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...
Noise Reduction of OCDM Signals by Electrical Time Gating
Noise Reduction OCDM Signals Electrical Time Gating
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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
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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
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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 ...
Noise reduction and control
Noise reduction and control
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2014/4/25
Eliminating or reducing excessive noise at work is not simply a legal responsibility for employers; it is also in an organisation’s commercial interests. The safer and healthier the working environmen...