Hong Kong Med J Vol 1 No 5 Supplement 5 October 2008 Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China CC Lau, PYK Yue, RNS Wong Research and Development Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China WY Ha Diagnostix Medical Centre Ltd, Hong Kong SAR, China SH Chui Department of Surgery, The Chinese University ...

SAR images have shown to be of high complexity and to require dedicated processing techniques. This paper presents two applications of the wavelet and multiresolution theory to the enhancement and characterization of SAR data. The rst application describes an improved method for speckle reduction. The second method uses a fractal-based texture measure to provide elements for SAR image segmentat...

Authors: Yue XIAO (Faculty of Dentistry, the University of Hong Kong, Hong Kong SAR, China; [email protected]) Bao Ying LIU (Faculty of Dentistry, the University of Hong Kong, Hong Kong SAR, China; [email protected]) Chun Hung CHU (Faculty of Dentistry, the University of Hong Kong, Hong Kong SAR, China, [email protected]) Edward Chin Man LO (Faculty of Dentistry, the University of Hong Kong, Hon...

This paper presents analyses of L1B waveforms in SAR mode and Low-Rate Mode (LRM) over water surfaces from numerical simulations from the CryoSat Mission Performance Simulator (CRYMPS) and from CryoSat-2 satellite measurements. This work was performed as part of the ESA project "Development of SAR Altimetry Studies and Applications over Ocean, Coastal zones and Inland waters (SAMOSA)". The proj...

Spotlight SAR interferometry is an attractive option for high resolution mapping and monitoring. In this paper, the signal spectral characteristics and the interfeometric properties of spaceborne spotlight SAR are analyzed completely, and the effect of the azimuthvariant Doppler to spotlight SAR interferometry is studied. Moreover, a new coregistration algorithm, which contains coarse coregistr...

Based upon the sparse array composed of cluster SAR satellites, this paper analyzes the space-time and space-frequency characteristic of the received signal in detail, and proposes an algorithm for the moving targets detection and imaging based on array signal processing and Wigner-Ville Distribution (WVD). The results of theoretical analysis and simulation show that the cluster SAR system can ...

We compared SAR distributions in major anatomical structures of the brain of a homogeneous and a heterogeneous model using FDTD calculations. Our results proved a good correlation between SAR values in lobes of the brain where tumors may arise more frequently. However SAR values at some specific locations were shown to be under or overestimated. key words: brain, epidemiological study, health e...

Abstract — This paper describes the implementation of a 8-bit 50 MS/s SAR ADC using 180nm TSMC CMOS VLSI Process in Mentor Graphics. Here main building blocks of SAR ADC lik e comparator, sample and hold, SAR Register and DAC are implemented. The supply voltage for this SAR ADC is ±1.8 V. The simulation result shows speed of 50 MHz achieved with input frequency of 1 MHz and power dissipation of...

Image Classification is the evolution of separating or grouping an image into different parts. The good act of recognition algorithms based on the quality of classified image. The good feat of recognition algorithms based on the quality of classified image. An important problem in SAR image application is accurate classification. Image segmentation is the mainly practical loom among virtually a...