Dinesh Kumar, V P; Dr. Tessamma, Thomas(Cochin University of Science and Technology, April , 2008)
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Abstract:
The wealth of information available freely on the web and medical image databases poses a major problem for the end users: how to find the information needed? Content –Based Image Retrieval is the obvious solution.A standard called MPEG-7 was evolved to address the interoperability issues of content-based search.The work presented in this thesis mainly concentrates on developing new shape descriptors and a framework for content – based retrieval of scoliosis images.New region-based and contour based shape descriptor is developed based on orthogonal Legendre polymomials.A novel system for indexing and retrieval of digital spine radiographs with scoliosis is presented.
Description:
Department of Electronics,
Cochin University of Science and Technology
Devarajan, G; Dr.Sridhar, C S(Cochin University of Science and Technology, January 30, 1987)
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Abstract:
Median filtering is a simple digital non—linear signal
smoothing operation in which median of the samples in a sliding
window replaces the sample at the middle of the window. The
resulting filtered sequence tends to follow polynomial
trends in the original sample sequence. Median filter preserves
signal edges while filtering out impulses. Due to this property,
median filtering is finding applications in many areas of image
and speech processing. Though median filtering is simple to
realise digitally, its properties are not easily analysed with
standard analysis techniques,
Description:
Department of Electronics, Cochin
University of Science and Technology