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 6 of 6 for “"Speckle reduction"”.
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Speckle reduction in SAR imagery
… is a type of multiplicative noise known as speckle. There are a number of different approaches which may be taken in order to reduce the amount of speckle noise in SAR imagery. One of the approaches is termed post image formation processing and this is the main concern of this thesis. …
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Improving reconstructions of digital holograms
… These can be split into two distinct parts: A) speckle reduction in reconstructions of digital holograms (DHs), and B) modeling and overcoming partial occlusion e®ects in reconstructions of DHs, and using occlusions to reduce the effects of the twin image in reconstructions of DHs. Part A …
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Improving the Specificity of Medical Ultrasound Imaging Using Scattering Spectrum Matching
… of the main limitations of this modality is the speckle phenomenon, which limits the contrast resolution. The contrast resolution is further compromised when imaging soft (low-scattering) tissue targets through or in the presence of strongly-scattering objects, which could introduce reverberation …
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Digital hologram recording systems: some performance improvements
… full 360� range of perspectives can be recorded. Speckle reduction using moving di�users can be performed to improve the image quality of the reconstructed images. A LabView based user friendly interface has been developed. � Novel methods based on space-time tradeo� and �xed point arithmetic have …