Illumination Specific HSV Color Coordinate System and Its Advantage for Image Highlight Correction
Davar Pishva, Atsuo Kawai, and Tsutomu Shiino
Department of Information Engineering, Mie University, Japan
In this paper, we present an illumination specific HSV color coordinate system and show its usefulness for image highlight correction. We propose that the illumination specific HSV color coordinate system can be obtained by projecting the RGB color coordinates of any dielectric object, such as plastic, along the vector of the incident light source onto a plane perpendicular to the vector. By associating the projected coordinates with standard HSV color coordinates, the underlying color of a highlighted color image can be estimated.
A 4-Bits Serial Modular Multiplier Applied to RSA
Chang N. Zhang and Hua Li
Department of Computer Science, University of Regina, Canada
Large integer modular multiplication and exponentiation are arithmetic primitives required by the public-key cryptosystems. In this paper, an efficient technique to determine the quotient for modular multiplication which is independent of the length of modulus and a 4bits-serial systolic array implementation for high speed modular multiplication are proposed. RSA cryptosystem is used as an example of the application, and the architecture is very suitable for high speed VLSI implementation. Moreover the proposed low-cost implementation (using single processing element (PE)) is feasible in restricted computing environments.
Investigation of the Charge Stability in Thin Polyimide Films Based on the C-V Measurements on MPS and MPOS Structures
R. Andok, O. Csabay, L. Matay, and G. Kecskes
Institute of Informatics, Slovak Academy of Sciences, Slovak Republic
The type and source of the charges in thin polyimide (PI) films have been investigated. We prepared a number of Metal-Polyimide-Semiconductor (MPS) and Metal-Polyimide-Oxide-Semiconductor (MPOS) structures with PI as insulating layers of various thicknesses, dilutions and with different hard-bake cure. These structures were evaluated by using several techniques, focusing on the C-V measurements. Main observed parameters are Epsilon_sub_r ,Y_sub_FB, N_sub_ef , and Q_sub_DC of PI films. Results from three types of materials, namely the PI 2525 (in different dilutions, 67%, 44%, 25% and undiluted) and PI 2610 (50% dilution and undiluted) PYRALIN® polyimides and the PROBIMIDE P 30A polyamide-imide are given here. In most of the cases total negative charge in PI has been observed. A model of the charge transfer in PI films is presented..
Fast Defect Detection in Cloths with B-splines
PeiFeng Zeng and Tomio Hirata
School of Engineering, Nagoya University, Nagoya, Japan
In this paper, an algorithm for fast defect detection in cloths based on fast B-spline transform is proposed. The algorithm can be applied to analyzing images at any integer scale for defect information. It can also be extended to a parallel algorithm that decomposes images at all desired scales simultaneously.
A threshold parameter Delta_sub_th is used to adjust the defect detection reliability. A desired compromise between fault recognition and continuity of edge pixels can be reached by adjusting the value of properly.
Code selection for Output Coding
Terry Windeatt and Reza Ghaderi
Centre for Vision, Speech and Signal Processing, University of Surrey, UK
Output Coding, in which a multiclass problem is decomposed into simpler binary sub-problems, has become a popular ensemble classifier approach. Originally the code matrix was chosen based on error-correcting principles, which led to Error-Correcting Output Coding (ECOC). However, various code matrices have been proposed for use with the Output Coding technique. In this paper we consider properties of the code matrix that affect performance, and with the help of synthetic and natural data, compare random, BCH and equidistant codes.
ATMTN: A Test-Bed for a National Telemammography Network
Department of Electrical Engineering, University of South Florida, US
A recent medical report reveals that while other types of cancer are experiencing negative growth, breast cancer has been the only one with a positive growth rate. That is primarily due to the fact that 1) examination process is a complex and lengthy one and 2) it is not available to the majority of women who live in remote sites. This problem can be solved using advanced networking technologies and signal processing algorithms. Software modules can help detect true negatives (TN), while marking true positives (TP) for further investigation. Depending on the choice of detection software number of false negatives (FN) can be reduced drastically. Since TNs are the majority of examinations, this first step reduces the load on radiologists by a tremendous amount. High-speed networking equipment can accelerate the required clinic-lab connection and make detection, segmentation and image enhancement algorithms readily available to the radiologists. This research describes Asynchronous Transfer Mode Telemammography Network (ATMTN) as a strategy for real-time, on-line screening, detection and diagnosis of breast cancer. ATMTN is a high-speed network integrated with automatic robust CAD/DSP methods for mass detection, Region of Interest (ROI) compression algorithms, and devised with DICOM 3.0 standard. While ATMTN has the advantage of higher penetration into the women for cancer screening, it provides the diagnosis with higher efficiency, better accuracy, and potentially lower cost. ATMTN research goals involved: (1) Networking stations for telemammography to demonstrate, evaluate, and validate technologies and methods for delivering mammography screening services via high-speed (155Mbps) links, performing real-time network-transmitted, high-resolution mammograms for immediate diagnosis as a "second opinion" strategy. (2) Development of object-oriented compression methods for storage, retrieval, and transmission of mammograms. (3) Inclusion and optimization of detection algorithms for identification of normal images in different resolutions to increase the speed and effectiveness of telemammography. (4) Resolving the compatibility issues between images from different equipment (DICOM standards) and (5) Optimization of an integrated ATMTN with adaptive CAD/DSP methods that are robust for large image databases and input sources.
Mechanical Properties of Bent Modules Based on LTCC Ceramics
Alena Pietrikova and Stanislav Slosarcik
Department of Hybrid Microelectronics, Technical University of Kosice, Slovak Republic
The top of a bend in flexural laminated LTCC (Low Temperature Cofired Ceramics) modules has been found to cause warping and cracks. Experiments have been concentrated on the effects of various manufacturer's bending on the structural integrity of DuPont's Low Temperature 951 and 851 Cofired Green TapeTM modules and on the delimitation of optimal (marginal) conditions for bending: the bend angle and the number of bent layers. Bend strength and stress concentration factors of LTCC multi-layer modules were measured. This model was able to predict the cracks observed in bent samples and provides a design guideline for unconventional utilization of bent ceramic laminates based on LTCC which should be used for the bent shaped thick film modules. The presented results of investigations and simulations have been realized on the multilayer modulus made in 8 versions, 5 thickness and two types ceramics: as a plane module and ceramic modules warp under the angle up 90° based on Low Temperature 951 and 851 Cofired Green TapeTM. Measurement system, which was built to characterize the failure and bend strength, is described. The results of the investigations can be summarized in design rules for LTCC bent modules (maximum number of layers, maximum bend angle, arrangement and stocking conductor lines in the middle of bent laminated electronic modules).
Linearity and Stability Analysis of a Class of Phase-Frequency Detectors
Vello Männama and Toivo Paavle
Department of Electronics, Tallinn Technical University, Tallinn, Estonia
In this paper, an optimum distribution of
gate delays for the control unit (CU), forming the control signals for the charge pump (CP) of the phase-frequency detector (PFD), is investigated. It is shown that at selection of delays the dynamic parameters of the CP must be also taken into account to ensure linear transfer characteristic (TC) of the PFD. Some critical aspects (substantial non-linearity of the TC, the dead zone phenomenon, and parasitic oscillation) are considered.