Thesis (Ph. D.)--University of Washington, 1995. / Vita. Includes bibliographical references (p. [263]-280).

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2005. / Includes bibliographical references (leaves 55-62). Also available in electronic version.

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We derive the expression for the three-dimensional incoherent optical transfer function when third-order spherical aberration is present. The normalized version of the transfer function is numerically calculated for various amounts of spherical aberration. We find the effects of the aberration to be highly dependent on the spatial frequency in the longitudinal direction. We also calculate a structure content parameter, as a quality criterion, from the normalized transfer function. Remarkably, the structure content parameter dependence on spherical aberration is well-fit by a simple Cauchy curve for aberrations out to two waves at the margin.

Motivated by these problems, we explore the potential of projectors in interactive information visualization and processing in this thesis. In particular, we make three contributions. First, we propose a computer vision solution for direct 3D object exhibition and manipulation without the user wearing spectacles. In our approach, a new 3D display interface is designed by projecting images on a hand-held foam sphere which can be moved freely by the user. By tracking the motion of the sphere and projecting motion-dependent images onto the sphere, a virtual 3D perception can be created. Using this interface, the user will experience as if he is holding the real object in hands and be able to control the viewing angle freely. / Second, we extend the projection on traditional rigid screen to projection on flexible surfaces. A new flexible display method is proposed, which can project information on a hand-held flexible surface (e.g. an ordinary white paper with a checker pattern at the back) that can be twisted freely. While the user twists the projection surface, the system recovers the deformation of the surface and projects well-tailored information onto the surface corresponding to the deformation. As a result, the viewer will see the information as if it was printed on the paper. Two applications, the flexible image projection and curvilinear data slicing are created to demonstrate the usefulness of the method. After the studies on fixed-position projection, we conduct an investigation on mobile projectors, which is becoming especially necessary with the rapid popularity of mobile projectors. We propose a hand-held movable projection method that can freely project keystone-free content onto a general flat surface without any markings or boundaries on the displaying screen. Compared with traditional static projection systems that keep the projector and screen in fixed positions, our projection scheme can give the user greater freedom of display control while producing undistorted images at the same time. / The recent trend of human-computer interaction technologies has revealed the potential of the projector as an powerful interaction tool. More than a pure display tool, a projector has great strength that can change largely the way a traditional user interface works. Although some possibilities have been investigated in previous work, certain applications and approaches deserve further studies. For example, 1) Projection showing 3D information: viewing 3D models is usually achieved by projecting polarized light of different phases for left and right eyes, and the user is required to wear specially designed spectacles. The cost of building such a system is high. 2) Projection on flexible surface: most existing systems display information on flat rigid projection screens, extending it to non-planar flexible surfaces is an interesting and useful research direction; 3) Direct user-info interaction: existing systems using mouse and screen have limited freedom of control and low level of user experience. Direct manipulation of the display object by the hands of a user is more natural; 4) Mobile projector display: portable or embedded projectors are becoming more and more popular, but some fundamental problems, e.g. the keystone correction, are not fully studied. / To verify the correctness of our methods, we built prototype systems using off-the-shelf devices and conducted extensive experiments, including both simulation and real experiments. The results show that the proposed methods are effective and good performance has been achieved. In particular, the real-time speed and low-cost requirement make it quite appealing in many application areas, such as education, digital games, medical applications etc. Capitalizing on the shrinking size, increasing portability, and decreasing cost of projectors, it is predictable that projector-based interactive processing will become more and more popular in the near future. We believe the research work in this thesis will provide a good foundation for further research and development on computer vision and projector-based applications. / Li, Zhaorong. / Adviser: Kin-Hong Wong. / Source: Dissertation Abstracts International, Volume: 73-06, Section: B, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 133-142). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. Ann Arbor, MI : ProQuest Information and Learning Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.

by Chu Kin-cheong. / Thesis (M.Ph.)--Chinese University of Hong Kong, 1988. / Bibliography: leaves 106-109.

by Hui Chau Man. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1991. / Includes bibliographical references. / ABSTRACT --- p.i / ACKNOWLEDGEMENTS --- p.ii / TABLE OF CONTENTS --- p.iii / Chapter CHAPTER 1 --- INTRODUCTION / Chapter 1.1 --- Computer Graphics Today --- p.2 / Chapter 1.1.1 --- 3D Graphics Synthesis Techniques --- p.2 / Chapter 1.1.2 --- Hardware-assisted Computer Graphics --- p.4 / Chapter 1.2 --- About The Thesis --- p.5 / Chapter CHAPTER 2 --- GRAPHICS SYSTEM ARCHITECTURES / Chapter 2.1 --- Basic Structure of a Graphics Subsystem --- p.8 / Chapter 2.2 --- VLSI Graphics Chips --- p.9 / Chapter 2.2.1 --- The CRT Controllers --- p.10 / Chapter 2.2.2 --- The VLSI Graphics Processors --- p.11 / Chapter 2.2.3 --- Design Philosophies for VLSI Graphics Processors --- p.12 / Chapter 2.3 --- Graphics Boards --- p.14 / Chapter 2.3.1 --- The ARTIST 10 Graphics Controller --- p.14 / Chapter 2.3.2 --- The MATROX PG-1281 Graphics Controller --- p.16 / Chapter 2.4 --- High-end Graphics System Architectures --- p.17 / Chapter 2.4.1 --- Graphics Accelerator with Multiple Functional Units --- p.18 / Chapter 2.4.2 --- Parallel Processing Graphics Systems --- p.18 / Chapter 2.4.3 --- The Parallel Processor Architecture --- p.19 / Chapter 2.4.4 --- The Pipelined Architecture --- p.21 / Chapter 2.5 --- Comparisons and Discussions --- p.22 / Chapter 2.5.1 --- Parallel Processors versus Pipelined Processing --- p.23 / Chapter 2.5.2 --- Parallel Processors versus Multiple Functional Units --- p.23 / Chapter 2.6 --- Summary of High-end Graphics Systems --- p.24 / Chapter CHAPTER 3 --- AN ISA 3D GRAPHICS DISPLAY SERVER / Chapter 3.1 --- Common ISA Graphics Cards --- p.26 / Chapter 3.1.1 --- Standard Video Display Cards --- p.26 / Chapter 3.1.2 --- Graphics Processing Boards --- p.27 / Chapter 3.2 --- A Depth Processor for the ISA computers --- p.28 / Chapter 3.2.1 --- The Z-buffer Algorithm for HLHSR --- p.28 / Chapter 3.2.2 --- Our Hardware Solution for HLHSR --- p.29 / Chapter 3.2.3 --- Design of the Depth Processor --- p.31 / Chapter 3.2.4 --- Structure of the Depth Processor --- p.34 / Chapter 3.2.5 --- The Depth Processor Operations --- p.35 / Chapter 3.2.6 --- Software Support --- p.40 / Chapter 3.2.7 --- Performance of the Depth Processor --- p.44 / Chapter 3.3 --- A VGA Accelerator for the ISA Computers --- p.45 / Chapter 3.3.1 --- Display Buffer Structure of the SuperVGA --- p.46 / Chapter 3.3.2 --- Design of the VGA Accelerator --- p.47 / Chapter 3.3.3 --- Structure of the VGA Accelerator --- p.49 / Chapter 3.3.4 --- Combining the VGA Accelerator and the Depth Processor --- p.51 / Chapter 3.3.5 --- Actual Performance of the DP-VA Board --- p.54 / Chapter 3.3.6 --- 3D Graphics Applications Using the DP-VA Board --- p.55 / Chapter 3.4 --- A 3D Graphics Display Server --- p.57 / Chapter 3.5 --- Host Connection for the 3D Graphics Display Server --- p.59 / Chapter 3.5.1 --- The Single Board Computers --- p.60 / Chapter 3.5.2 --- The VME-to-ISA bus convenor --- p.61 / Chapter 3.5.3 --- Structure of the VME-to-ISA Bus Convertor --- p.61 / Chapter 3.5.4 --- Communications through the bus convertor --- p.64 / Chapter 3.6 --- Physical Construction of the DP-VA Board and the Bus Convertor --- p.65 / Chapter 3.7 --- Summary --- p.66 / Chapter CHAPTER 4 --- A MULTI-i860 3D GRAPHICS SYSTEM / Chapter 4.1 --- The i860 Processor --- p.69 / Chapter 4.2 --- Design of a Multiprocessor 3D Graphics System --- p.70 / Chapter 4.2.1 --- A Reconfigurable Processor-Pipeline System --- p.72 / Chapter 4.2.2 --- The Depth-Processing Unit --- p.73 / Chapter 4.2.3 --- A Multiprocessor Graphics System --- p.75 / Chapter 4.3 --- Structure of the Multi-i860 3D --- p.77 / Chapter 4.3.1 --- The 64-bit-wide Global Data Buses --- p.77 / Chapter 4.3.2 --- The 1280x1024 True-colour Display Unit --- p.79 / Chapter 4.3.3 --- The Depth Processing Unit --- p.82 / Chapter 4.3.4 --- The i860 Processing Units --- p.84 / Chapter 4.3.5 --- The System Control Unit --- p.87 / Chapter 4.3.6 --- Performance Prediction --- p.89 / Chapter 4.4 --- Summary --- p.90 / Chapter CHAPTER 5 --- CONCLUSIONS / Chapter 5.1 --- The 3D Graphics Synthesis Pipeline ……… --- p.91 / Chapter 5.2 --- 3D Graphics Hardware --- p.91 / Chapter 5.3 --- Design Approach for the ISA 3D Graphics Display Server --- p.92 / Chapter 5.4 --- Flexibility in the Multi-i860 3D Graphics System --- p.93 / Chapter 5.5 --- Future Work --- p.94 / Chapter APPENDIX A --- DISPLAYING REALISTIC 3D SCENES / Chapter A.1 --- Modelling 3D Objects in Boundary Representation --- p.96 / Chapter A.2 --- Transformations of 3D scenes --- p.98 / Chapter A.2.1 --- Composite Modelling Transformation --- p.98 / Chapter A.2.2 --- Viewing Transformations --- p.99 / Chapter A.2.3 --- Projection --- p.102 / Chapter A.2.4 --- Window to Viewport Mapping --- p.104 / Chapter A.3 --- Implementation of the Viewing Pipeline --- p.105 / Chapter A.3.1 --- Defining the View Volume --- p.105 / Chapter A.3.2 --- Normalization of The View Volume --- p.106 / Chapter A.3.3 --- The Overall Transformation Pipeline --- p.108 / Chapter A.4 --- Rendering Realistic 3D Scenes --- p.108 / Chapter A.4.1 --- Scan-conversion of Lines and Polygons --- p.108 / Chapter A.4.2 --- Hidden Surface Removal --- p.109 / Chapter A.4.3 --- Shading --- p.112 / Chapter A.4.4 --- The Complete 3D Graphics Pipeline --- p.114 / Chapter APPENDIX B --- DEPTH PROCESSOR DESIGN DETAILS / Chapter B.l --- PAL Definitions --- p.116 / Chapter B.2 --- Circuit Diagrams --- p.118 / Chapter B.3 --- Depth Processor User's Guide --- p.121 / Chapter APPENDIX C --- VGA ACCELERATOR DESIGN DETAILS / Chapter C.1 --- PAL Definitions --- p.124 / Chapter C.2 --- Circuit Diagram --- p.125 / Chapter C.3 --- The DP-VA User's Guide --- p.127 / Chapter APPENDIX D --- VME-TO-ISA BUS CONVERTOR DESIGN DETAILS / Chapter D.1 --- PAL Definitions --- p.131 / Chapter D.2 --- Circuit Diagrams --- p.133 / Chapter APPENDIX E --- 3D GRAPHICS LIBRARY ROUTINES FOR THE DP-VA BOARD / Chapter E.1 --- 3D Drawing Routines --- p.136 / Chapter E.2 --- 3D Transformation Routines --- p.137 / Chapter E.3 --- Shading Routines --- p.138 / Chapter APPENDIX F --- PIPELINE CONFIGURATIONS FOR N PROCESSORS / REFERENCES

by Li Lung Ming. / Thesis (M.Sc.)--Chinese University of Hong Kong, 1992. / Includes bibliographical references (leaves 33-34). / Chapter 0. --- Abstract --- p.3 / Chapter 1. --- Introduction --- p.4 / Chapter 1.1 --- Stereoscopic Applications --- p.4 / Chapter 1.2 --- How to perceive 3-D image --- p.6 / Chapter 1.2.1 --- Monocular Cues --- p.6 / Chapter 1.2.2 --- Binocular cues --- p.7 / Chapter 2 --- Background --- p.9 / Chapter 2.1 --- True 3 -D Display --- p.9 / Chapter 2.1.1 --- Stereoscopic Systems --- p.9 / Chapter 2.1.2 --- Head-Mounted Display --- p.11 / Chapter 2.1.3 --- Varifocal-mirror Display --- p.12 / Chapter 2.1.4 --- Holographic Systems --- p.13 / Chapter 2.2 --- Generation of real-time Stereoscopic Views --- p.15 / Chapter 3. --- A Stereoscopic System --- p.21 / Chapter 3.1 --- Design Considerations --- p.21 / Chapter 3.2 --- The Set-up --- p.22 / Chapter 4. --- Results --- p.26 / Chapter 5. --- Discussions --- p.27 / Chapter 5.1 --- Advantages of the set-up --- p.29 / Chapter 5.2 --- Disadvantages of the set-up --- p.30 / Chapter 6. --- Conclusion --- p.31 / Chapter 7. --- References --- p.33