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A statistical approach is presented for determining the optimal parameters of a bilateral filter for suppressing noise in an image. A closed-form solution to obtaining Stein's unbiased estimate of the bilateral filter-based image estimation risk is derived. The values of the parameters are then determined by minimization of the estimated risk, which is equivalent to maximization of the estimated signal...
Design and optimization of backside-thinned CMOS active pixel sensors (APS) using modeling and simulation is presented. For the efficient design and the further improvement of our backside-thinned CMOS imagers, different models were developed and TCAD simulating tools were used. The imagers have been successfully designed, fabricated and tested and proved to possess excellent imaging properties. This...
Joint Model (JM) reference software is used for academic reference of H.264 and it was developed by JVT (Joint Video Team) of ISO/IEC MPEG & ITU-T VCEG (Video coding experts group). The Intel IPP (Integrated Performance Primitives) H.264 is a product of Intel which uses IPP libraries and SIMD instructions available on modern processors. The Intel IPP H.264 is multi-threaded and uses CPU optimized...
Emphysema is a lung related disorder. It shows up on the CT (computer tomography) images as regions of low attenuation. Traditional methods used for detection of Emphysema have been derivation of several metrics of the CT image like the PI (pixel index) and BI (bullae index) which denote the percentage of pixels with low attenuation in the CT image. These techniques score low with low-dose CT images...
An approach is proposed to extend bilateral filtering to the vector case so as to simultaneously take spectral and spatial information into account by using spectral distances and multivariate Gaussian functions. To simplify the determination of the parameters of the corresponding covariance matrix, the data vectors are transformed to eigenspace through principal component analysis (PCA). By locally...
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