Digital Commons Network^™

Image Enhancement And Analysis Of Leukocyte Adhesion, Yee-Ruh Lin

Theses

The image of leukocyte adhesion to microvascular walls in the isolated rat perfused heart model has been observed and processed. Some of the fluorescent labeled leukocytes are barely visible due to microscope focal plane and the motion of objects. The purpose of this thesis is to extract leukocyte from the image of the experimental data using image enhancement and analysis (segmentation) techniques and develop a program to handle automatically counting of leukocytes in a predefined scene.

3-D Structure Recovery Using Unified Optical Flow Field Approach, Anees Ahmad

Theses

Recovery of the 3-D structure that is characterized by an N^th order factorable and/or non-factorable polynomial equation is studied in this thesis. Analytical tools have been employed to analyze and solve the problem. The solution is based on the direct method, which is derived from the unified optical flow field, which, in turn, is an extension of optical flow to spatial image sequences. Least squares formulation has been employed for optimum estimation. The method used does not require the establishment of point to point correspondence, nor the estimation of the optical flow, as an intermediate step.

The theoretical results …

Automated Determination Of Air Content In Hardened Concrete, Anita R. Navalurkar

Theses

An automated system was developed for the microscopic determination of air content and the related parameters in hardened concrete using the principles of Image Analysis and Computer Technology. Slices taken from the concrete specimen were viewed through a microscope with 40X magnification. The magnified image of the concrete slice is digitized by an Image Analyzing Software. Methodologies were developed for analysis of the digitized image and determination of air content and the required parameters. The automated system included a motorized positioner which translated microscope stage in a frame by frame sequence so that the whole image is digitized. Several tests …

Parallel Implementation Of Spatial Domain Image Processing Algorithms On The Mesh Connected Computer Simulator, Adury Devi Prasad

Theses

The performance of conventional computers in image processing applications is known to be inadequate due to the enormous computational requirements. Almost all image processing applications can be implemented in parallel. This thesis is the parallel implementation of neighborhood averaging and edge detection by the Sobel and Laplacian operators on the Mesh Connected Computer Computer Simulator (MCCS), a package developed at NJIT to study the behavior of SIMD machines. Expressions for speedup, utilization and efficiency have been derived. Suggestions for further improvements that can be incorporated in MCCS and its instruction set have been made.

Androx Implementation Of Nonlinear Filter, Keh-Chao Chu

Theses

Nonlinear filters, such as morphological operations, play an important role in image processing. Several software implementations of nonlinear filters are presented in this thesis. There may exist more than one method to implement a specific operation. The methods used in this thesis are chosen to be most suited for the machine used according to its structure. These most suited methods are also generally best for software implementations on other machines as well. The machine used here is the Androx image computing workstation.

Eeg Data Compression, Yun-Chu Wu

Theses

This paper presents two different ways to compress EEC data-direct data com pression and a data transformation technique. The Adaptive Delta modulation and Huffman coding are used in the former method to predict or interpolate the data. Linear orthognal transformation algorithms are used in the latter method to detect and reduce the redundancies of the data by analyzing the spectral and energy distribution. Each method is implemented by programming the computer. The experimental results of their efficiencies and errors with different requirements and under different situations are compared and discussed. By comparing the EEC data compression degree and normalized square …

Graphical User Interface For Image Processing, Kumar Chebrolu

Theses

A user friendly, menu driven, highly interactive X Windows package for Image Processing Applications using Motif Widget Set under Motif Window Manager is developed. Modules related to Segementation, Enhancement, Representation, Transformations are developed. The above routines are useful for image manipulation. The current gray scale/binary image is displayed on the window. Online histogram is provided so that the user can change the threshold value interactively. The OSF/Motif toolkit is used efficiently and also Xlib calls to display the image by allocating colormap. An on-line image manipulation help menu facility is incorparated in the tool to make it more versatile.

Development Of A Classification And Coding System For Computer-Aided Process Planning, Shilpan K. Patel

Theses

The chore of this work was to develop a Group Technology Classification Code which can represent the full gamut of simple, rotational parts. The automated coding plan is developed to alleviate the endeavor of the process planner to plan the tasks related to the manufacturing of a specific part. The 15 digits were devised from the Japanese KK-3 Classification and Coding system. The KK-3 System contains 21 digits. Our aim is to minimize the code length, and concurrently to eliminate the redundancies. As a result, a 15 digit G.T. Code is created. The proposed plan also generates the operation logic …

Off-Line Programming Using Igrip, Narahari K. Bhandary

Theses

AT&T's FWS-200 (Flexible Work Station) has been modeled and simulated to implement Off-Line Programming (OLP). IGRIP (Interactive Graphics Robot Instruction Program) from Deneb Robotics, Inc. has been used to simulate the FWS operation.

A GSL(Graphics Simulation Language) program has been used to simulate the chip placements during PCB assembly. The program leads the user through the motions of chip placement, and after the simulation run downloads the motion sequence to the FWS. The animation sequences of the FWS have been downloaded to the FWS on the Factory Floor using a C program, which is utilized to communicate the data to …

Effect Of Shrinkage On The Design And Manufacture Of Plastic Parts In Injection Molding Using Cad/Cam Techniques, Deepak M. Shastri

Theses

Computer aided design software in injection molding has revolutionized injection molding in the design and manufacturing processes. Computer Aided Engineering can be applied to injection molding to increase the process efficiency, reduce part costs, and produce accurate parts in less time. The mold designer has many software programs to choose from to produce satisfactory mold designs from part geometries, and a correct selection can produce profitable results. A study of the need for and the scope of computers in injection molding is performed to evaluate the suitability of a CAE package by considering the value added to the parts using …

Methods Development For Determination Of Trace Polar Volatile Organics In Environmental Samples, Qingchu Peng

Theses

The determination of trace levels of organic compounds in water samples is well developed for the less polar compounds, but the polar compounds are more difficult. The development of reliable and reproducible methods for such compounds as volatile alcohols and ketones is necessary if environmental monitoring is to be extended to these compounds.

The purge-and-trap method is frequently used for determination of volatiles in water samples. The method has problems when hydrophylic substances are being analyzed, since these are less easy to purge from the solution and more difficult to trap and desorb quantitatively. The high amount of water carried …

Analysis Of The Influence Of Natural Wear And Tear In Gates And Runners On The Filling Of A Balanced Multi-Cavity Injection Mold, Ranga Reddy V. Adavelly

Theses

Design of injection molds is outmost important in the manufacture of parts. Its components runners and gates significantly influence the mold filling. Using a simulation package for injection molding a balanced multi-cavity mold was designed. Wear in the gates of runner was simulated by varying the cross-sectional area of the components. Influence of wear of tear in gates of runners on mold filling was measured in terms of flow rate of time of fill. Detailed analysis is done on four different models using four different materials Polycarbonate, Polypropylene, Nylon6 and Polybutylene terephthalate. Graphical display of result is presented and analyzed …

Electroretinogram Modeling : Parameter Identification And Intensity-Response Function Fits, Juan J. Castro

Theses

Electroretinography testing provides many useful techniques for clinical diagnosis of the visual system. However, the interpretation of the electroretinogram data involves a great amount of subjectivity. The use of mathematical models and parameter estimation techniques to fit the electroretinogram data supply a non-subjective and more standard way for analysis of the electroretinogram data. Mathematical models provide a way of summarizing the information enclosed in the raw electroretinogram response into a small set of parameters that define the response.

This thesis presents a mathematical model for the electroretinogram response due to light stimuli. It also provides a non-subjective method for obtaining …

A Process For Implementing Cim In A Small Manufacturing Facility, Tushar R. Desai

Theses

This work is dedicated to small manufacturing enterprises seeking to explore Computer Integrated Manufacturing (CIM) technology, which is the recent trend in the manufacturing world. The main theme of this thesis is to improve productivity, product quality and reliability, and to reduce costs by integrating various discipline in small manufacturing environment, using computer technology.

To achieve this goal, a hypothetical small manufacturing company was chosen as a subject. The typical functional and organizational structures were analyzed and possible problem areas were highlighted. The problems relating to manufacturing process were studied in detail, and possible solutions were proposed to computerize the …

Interfacing Plasticating Extruders With Personal Computers For Data Acquisition, Information Analysis And Retrieval Purposes, Gautamkumar Y. Shah

Theses

The current manufacturing industries are influenced more and more by computers and automation. Two of the major areas of computer uses are data acquisition and interfacing, both lead towards automation.

The intent of this thesis is to focus on the area of interfacing personal computers with plasticating extruders for information retrieval and storage. The requirements for software and hardware are discussed. Analysis of the stored information can be used to improve the quality of the final product. Implications of the stored parameters on the final product are also discussed. A sample program to store and retrieve the important parameters is …

A New Approach To Motion Analysis From A Sequence Of Stereo Images, Lin Zhou

Theses

A new approach to motion analysis from a sequence of stereo images is presented in this thesis. Based on a four-frame model, a new concept of unified optical flow field has been developed recently [3]. It is a generalization of the optical flow in stereo imagery. A set of fundamental equations is established to characterize the unified optical flow field. Another set of equations is then derived from which 3-D motion can be reconstructed via the use of the field quantities of the unified optical flow field. In this thesis, the implementation of the approach is conducted. The simulation and …

Bad Data Identification In Power Systems, Shichun Zou

Theses

Two classes of bad data (BD) identification methods in power system state estimation are studied.

The first class is the perturbation method. In this method, the obtained measurements are perturbed a few times. Each time a state is obtained from which measurement corrections are calculated. The statistics of the corrections corresponding to a BD are different from those corresponding to a healthy data. The method uses those differences for identification purposes.

The effectiveness of different indicators is studied. These include the normalized residual, the weighted residual, and residuals incorporating the statistics of the corrections.

The success rate of using the …

Catalytic Oxidation Of Trace Concentrations Of Chlorinated Hydrocarbons Over 1.5% Platinum On Alumina/Monolith, Yi Wang

Theses

The catalytic oxidation of chlorinated hydrocarbons CH₂Cl₂ (DCM) and C₂HCl₃ (TCE) was investigated over a 1.5% Pt on Al2O3/monolith at 150 to 450°C. The studies were conducted at space velocities from 1,000 v/v/hr to 30,000 v/v/hr. Chemical equilibrium calculations showed the potential conversion and products distribution. The reactivity and selectivity for destruction of these compounds with air over Pt catalyst were evaluated experimentally. This research was conducted in a tubular reactor system with associated feed and product flow measuring equipment. Feed and product streams were analyzed using gas chromatography (GC) with ECD, FID and …

High Precision Laser Radar Tracking Device, V. P. Raghavan

Theses

This thesis explores a relatively new Solid Silver Thin Film Source technology, for the implementation of a novel High Precision Laser Radar Tracking device. The process which consists of a Ag+-Na+ ion exchange, is designed in two steps. It utilizes an initial electric field-aided ion exchange step for a predeposition, and a subsequent second diffusion step to force the profile latitude necessary for optimization of the device. While the entire project of implementing this device, consists of analyzing, processing, polishing and testing, this thesis covers only the process aspect in detail. The success achieved by obtaining the required Power Coupling …

Computer Graphics Archive: Prototype 1, Malinda D'Attilio

Theses

None provided.

The Fractal Archive, Diing-Wuu Vale Wu

Theses

None provided.

Extension Of Evaluating The Operating Characteristics For Dependent Mixed Variables-Attributes Sampling Plans To Large First Sample Size, Min Tang

Theses

In evaluation of the operating characteristics of mixed sampling plans (a known), the probability function, Fn(x) , of the difference between the extreme value and the mean is important. Because it is an n multiple integral where n is the first sample size of a mixed dependent sampling plan, the normal way of evaluating this probability is the recursive quadrature method. Using this method, as the first sample size increases, the amount of computation increases exponentially, so that this probability function becomes a bottleneck in computation. This thesis presents a Taylor-expansion method for handling the probability function for large first …

A Study Of The Effect Of Lithographic Press Speed On Dot Gain, James B. Mudge

Theses

Dot gain is the increase in size of a halftone dot or array of dots that takes place in the stages of reproduction of an image from original film to printing on a substrate. Uncontrolled dot gain is a source of multiple print quality problems including color variation, loss of detail and high waste factors during printing. Several factors have been identified as causes of dot gain. One factor that had not been investigated was the effect of press operating speed on dot gain. The purpose of this investigation is to study the effect that press speed has on dot …

A Study Of Mechanical Dot Gain For Different Dot Shapes Based On The Border Zone Thoery, Kuang-Hua Sun

Theses

Mathematical equations have been derived to calculate the relationship of the dot area and the radius or diameter of a halftone dot . Dot gain is directly associated with the perimeter and the shape of a halftone dot. It is important to study the relationship between dot gain and dot shape, and to understand how each affects the printing result . The border zone theory explains that when dot gain occurs, the width of the border zone around the dot is constant and is independent of the dot shape and dot area. Four halftone gray scales with different dot shapes …

Image Quality Metrics For Visual Optical Instruments, Hongping Zhang

Theses

The effect of coma and astigmatism on subjective quality of image of sinusoidal and square-bar targets is simulated by using digital processing system. A suprathreshold method is employed in psychophysical discrimination experiments. We determine the robustness of some image quality metrics that can be employed during automated production of visual instruments by examining the correlation between subjective results and objective measures. These include the variance of the wavefront aberration, the Strehl ratio, the radius of 84% encircled energy of the point spread function (R84), the modulation transfer function (MTF) and the integral of the MTF across the frequency range of …

Analysis Of Thermal Effects Produced By Incident Laser Radiation On A Structure, Frederick C. Debolt

Theses

This paper is an attempt to understand and define the thermal effects of incident laser radiation on a semi-infinite body. Based on previous research into the subject as well as other research into laser technologies certain assumptions are utilized to facilitate achieving usable solutions. The incident radiation is modeled as a set of independent functions of space and time in cylindrical coordinates. By using the Separation of Variables technique in conjunction with Green's Function a numerical solution to the temperature field induced by the radiation is found. The equations developed while solving the heat conduction problem are then utilized in …

Microwave Treatment Of Hazardous Wastes : Chemical Fixation Of Insoluble Non-Volatile, Chemically Non-Reactive Organics In Soil, Naihong Zhu

Theses

Microwave treatment of hazardous wastes like dioxin-contaminated soil potentially fills a great need for a remediation technology which potentially can be applied in-situ: the EPA has concluded from a risk assessment study that it is the excavation and transportation of such wastes that poses the greatest risk. Studies have been carried out on a surrogate for dioxin, namely, 9,10-anthraquinone because it has similar chemical and physical properties but it is not toxic. It was found in microwave treatment studies that, at temperatures attainable in-situ, anthraquinone became non-extractable. A model was proposed which postulated that as water was removed from soil …

Vermillion Years, Fouad Ghazzaoui

Theses

None provided.

An Analytical Model For The Colorimetric Characterization Of Color Crts, Ricardo J. Motta

Theses

To be a viable instrument for color appearance research, the color Cathode Ray Tube has to be very well calibrated and characterized. The purpose of this research was to develop the techniques and methods used to carry out such characterization, and also to evaluate to what degree of precision and accuracy can such a characterization be performed. A new model for predicting the CRT behavior is presented along with the experimental results that validate it.

Quadtree Algorithms For Image Processing, Jim Benjamin Isaac

Theses

The issue of constructing a computer-searchable image encoding algorithm for complex images and the effect of this encoded image on algorithms for image processing are considered. A regular decomposition of image (picture) area into successively smaller bounded homogeneous quadrants is defined. This hierarchical search is logarithmic, and the resulting picture representation is shown to enable rapid access of the image data to facilitate geometric image processing applications (i.e. scaling, rotation), and efficient storage. The approach is known as quadtree (Q-Tree) encoding. The applications in this thesis are primarily to grayscale pixel images as opposed to simple binary images.