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» Image Quality Assessment Using Spatial Frequency Component
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TMI
2002
134views more  TMI 2002»
13 years 7 months ago
Exact Frequency-Domain Reconstruction for Thermoacoustic Tomography: II. Cylindrical Geometry
Microwave-induced thermoacoustic tomography (TAT) in a cylindrical configuration is developed to image biological tissue. Thermoacoustic signals are acquired by scanning a flat ult...
Yuan Xu, Minghua Xu, Lihong V. Wang
ICIP
2006
IEEE
14 years 9 months ago
A New Contourlet Transform with Sharp Frequency Localization
The contourlet transform was proposed as a directional multiresolution image representation that can efficiently capture and represent singularities along smooth object boundaries...
Yue M. Lu, Minh N. Do
VISUALIZATION
2003
IEEE
14 years 29 days ago
A Frequency-Sensitive Point Hierarchy for Images and Volumes
This paper introduces a method for converting an image or volume sampled on a regular grid into a space-efficient irregular point hierarchy. The conversion process retains the ori...
Tomihisa Welsh, Klaus Mueller
PRL
2006
117views more  PRL 2006»
13 years 7 months ago
Improving image segmentation quality through effective region merging using a hierarchical social metaheuristic
This paper proposes a new evolutionary region merging method in order to efficiently improve segmentation quality results. Our approach starts from an oversegmented image, which is...
Abraham Duarte, Miguel Ángel Sánchez...
ICIAR
2009
Springer
14 years 2 months ago
The Use of Residuals in Image Denoising
Abstract. State-of-the-art image denoising algorithms attempt to recover natural image signals from their noisy observations, such that the statistics of the denoised image follow ...
Dominique Brunet, Edward R. Vrscay, Zhou Wang