Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"spectral enhancement"”.
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DEVELOPMENT AND EVALUATION OF ENVELOPE, SPECTRAL AND TIME ENHANCEMENT ALGORITHMS FOR AUDITORY NEUROPATHY
… a method for combining both speech envelope enhancement and time scaling to combine the proven benefits of each algorithm. In addition, spectral enhancement is cascaded with envelope and time enhancement to address the poor frequency discrimination in AN. The proposed speech enhancement …
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Surface myoelectric signal analysis and enhancement for improved prosthesis control
… between noise types grew as the SNR increased. Spectral Enhancement, which is normally used on speech signals, is applied to myoelectric signals in an attempt to mitigate noise. Spectral Enhancement based on Improved Minima Controlled Recursive Averaging (IMCRA) was found to improve the …
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Enhancing dimensionality in remote sensing images
… are single-band grayscale representations; multispectral images, capturing a limited number of spectral bands; and hyperspectral images, encompassing a broad spectrum with numerous spectral bands. Images of the same scene are often acquired by different sensors, leading to datasets that are …
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Applications of UV-visible spectral imaging in forensic science
This study investigated the use of UV-visible spectral imaging for the location and enhancement of substances of forensic interest using targeted approaches based on the spectrum of the substance. Spectral enhancement procedures were developed for blood with and without chemical enhancement, and …
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PHYSICOCHEMICAL STUDIES ON THE CATALYTIC AND REGULATORY SUBUNITS OF RIBONUCLEOTIDE REDUCTASE FROM CALF THYMUS
… coefficient of the visible chromophore. This spectral enhancement may reflect a shift in equilibrium toward an active protein M1-M2 complex and/or a structural change at the chromophore. EPR spectroscopic experiments at 77 K did not detect a free radical species in the calf thymus enzyme …
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Application of surface-enhanced resonance Raman spectroscopy to chlorophyll and chlorophyll derivatives
… nitrogen temperature was found to improve the spectral quality by minimizing sample heating and photooxidation. Most significantly, the fluorescence accompanying red excitation was quenched at the roughened Ag surface at low temperature and this resulted in richly detailed SERRS spectra. …
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Environmental Monitoring of Cyanobacterial Harmful Algal Blooms Using Small Unmanned Aerial Systems
… CHABs detection through RGB band cameras and spectral enhancement techniques was efficient and accurate. sUAS were capable of providing coverage up to 1 km2 per mission and the short intervals between sampling and results (approx. 2 h) allowed for the rapid analysis of data and for …
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White Light Continuum for Broadband Nonlinear Spectroscopy
… The ability to generate a high-quality, high-spectral-irradiance source of radiation confined in a single beam that spans the visible and near-infrared spectral regimes has great utility for nonlinear measurement methods such as the Z-scan technique. Using a broadband WLC instead of …