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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Adaptive image transform coding using activity factors

Kang, Songshi. January 1981 (has links)
Thesis (M.S.)--Ohio University, November, 1981. / Title from PDF t.p.
2

VHDL modeling and simulation for a digital target imaging architecture for multiple large targets generation /

Bergön, Håkan. January 2002 (has links) (PDF)
Thesis (M.S. in Systems Engineering and M.S. in Software Engineering)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Douglas J. Fouts, Man-Tak Shing, Phillip E. Pace. Includes bibliographical references (p. 171-172). Also available online.
3

ADAPTIVE DIGITAL IMAGE DATA COMPRESSION BY RECURSIVE IDPCM.

Fu, Deng Yuan. January 1985 (has links)
No description available.
4

Progressive transmission and display of static images

Packwood, R. A. January 1986 (has links)
No description available.
5

Transform coding techniques and their application in JPEG scheme.

January 1991 (has links)
by Chun-tat See. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1991. / Includes bibliographical references. / ACKNOWLEDGEMENTS --- p.i / ABSTRACT --- p.ii / NOTATIONS --- p.iv / TABLE OF CONTENTS --- p.vi / Chapter 1. --- INTRODUCTION --- p.1-1 / Chapter 1.1 --- Introduction --- p.1-1 / Chapter 1.2 --- A Basic Transform Coding System --- p.1-2 / Chapter 1.3 --- Thesis Organization --- p.1-5 / Chapter 2. --- DYADIC MATRICES AND THEIR APPLICATION --- p.2-1 / Chapter 2.1 --- Introduction --- p.2-1 / Chapter 2.2 --- Theory of Dyadic Matrix --- p.2-2 / Chapter 2.2.1 --- Basic Definitions --- p.2-3 / Chapter 2.2.2 --- Maximum Size of Dyadic Matrix --- p.2-8 / Chapter 2.3 --- Application of Dyadic Matrix in Generating Orthogonal Transforms --- p.2-13 / Chapter 2.3.1 --- Transform Performance Criteria --- p.2-14 / Chapter 2.3.2 --- "[T1] = [P]Diag([DM2(4)],[A(4)])[Q]" --- p.2-19 / Chapter 2.3.3 --- "[T2] = [P]Diag([DM2(4)],[DM2(4)])[Q]" --- p.2-21 / Chapter 2.4 --- Discussion and Conclusion --- p.2-26 / Chapter 3. --- LOW SEQUENCY COEFFICIENT TRUNCATION (LSCT) CODING SCHEME --- p.3-1 / Chapter 3.1 --- Introduction --- p.3-1 / Chapter 3.2 --- DC Coefficient Estimation Schemes --- p.3-2 / Chapter 3.2.1 --- Element Estimation --- p.3-2 / Chapter 3.2.2 --- Row Estimation --- p.3-4 / Chapter 3.2.3 --- Plane Estimation --- p.3-7 / Chapter 3.3 --- LSCT Coding Scheme 1 and Results --- p.3-11 / Chapter 3.4 --- LSCT Coding Scheme 2 and Results --- p.3-17 / Chapter 3.5 --- Discussions and Conclusions --- p.3-21 / Chapter 4. --- VARIABLE BLOCK SIZE (VBS) CODING SCHEME --- p.4-1 / Chapter 4.1 --- Introduction --- p.4-1 / Chapter 4.2 --- Chen's VBS Coding Scheme and Its Limitation --- p.4-3 / Chapter 4.3 --- VBS Coding Scheme With Block Size Determined Using Edge Discriminator --- p.4-6 / Chapter 4.4 --- Simulation Results --- p.4-8 / Chapter 4.5 --- Discussions and Conclusions --- p.4-12 / Chapter 5. --- ENHANCEMENT OF JPEG INTERNATIONAL STANDARD --- p.5-1 / Chapter 5.1 --- Introduction --- p.5-1 / Chapter 5.2 --- The Basic JPEG International Standard --- p.5-2 / Chapter 5.2.1 --- Level Shift and Discrete Cosine Transform --- p.5-4 / Chapter 5.2.2 --- Uniform Quantization --- p.5-5 / Chapter 5.2.3 --- Coefficient Coding --- p.5-7 / Chapter 5.3 --- Efficient DC Coefficients Encoding --- p.5-8 / Chapter 5.3.1 --- The Minimum Edge Difference (MED) Predictor --- p.5-8 / Chapter 5.3.2 --- Simulation Results --- p.5-9 / Chapter 5.3.3 --- Pixel Domain Predictors --- p.5-13 / Chapter 5.3.4 --- Discussion and Conclusion --- p.5-15 / Chapter 5.4 --- JPEG Scheme Using Variable Block Size Technique --- p.5-15 / Chapter 5.4.1 --- Scheme 1 --- p.5-16 / Chapter 5.4.2 --- Scheme 2 --- p.5-25 / Chapter 5.4.3 --- Scheme 3 --- p.5-27 / Chapter 5.4.4 --- Scheme 4 --- p.5-29 / Chapter 5.4.5 --- Scheme 5 --- p.5-32 / Chapter 5.4.6 --- Discussions and Conclusions --- p.5-32 / Chapter 5.5 --- Conclusions --- p.5-33 / Chapter 6. --- CONCLUSIONS --- p.6-1 / Chapter 6.1 --- Summary of Research Work --- p.6-1 / Chapter 6.2 --- Contributions of Work --- p.6-2 / Chapter 6.3 --- Suggestions for Further Research --- p.6-3 / Chapter 7. --- REFERENCES --- p.7-1 / RESULTS
6

Performance analysis of Image transforms.

January 1991 (has links)
by Francis Fuk-sing Wu. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1991. / Bibliography: leaves [90]-[94] / LIST OF FIGURES --- p.vii / LIST OF TABLES --- p.ix / NOTATIONS --- p.x / Chapter 1 --- INTRODUCTION / Chapter 1.1 --- Introduction --- p.1-1 / Chapter 1.2 --- Properties of Orthonormal Transforms --- p.1-4 / Chapter 1.3 --- Some Considerations of a Transform System --- p.1-5 / Chapter 1.4 --- Motivation of Work --- p.1-7 / Chapter 1.5 --- Organization of the Thesis --- p.1-9 / Chapter 2 --- COVARIANCE ESTIMATION SCHEMES AND PERFORMANCE COMPARISON OF THE KLT'S / Chapter 2.1 --- Introduction --- p.2-1 / Chapter 2.2 --- Statistics of an Image --- p.2-1 / Chapter 2.3 --- Mathematical Covariance Functions --- p.2-3 / Chapter 2.3.1 --- One-Dimensional : First-Order Markov Model --- p.2-3 / Chapter 2.3.2 --- Two-Dimensional : Separable and Non-Separable Isotropic Models --- p.2-3 / Chapter 2.4 --- Goviance Estimation Schemes --- p.2-5 / Chapter 2.4.1 --- Scheme 1 --- p.2-5 / Chapter 2.4.2 --- Scheme 2 --- p.2-7 / Chapter 2.4.3 --- Scheme 3 --- p.2-8 / Chapter 2.5 --- KLT's of Different Random Processes --- p.2-11 / Chapter 2.6 --- Transform Comparison Based on Real Images --- p.2-14 / Chapter 2.7 --- Concluding Remarks --- p.2-18 / Chapter 3 --- DC TRANSFORMED ENERGY PACKING ABILITY OF KLT AND DCT / Chapter 3.1 --- Introduction --- p.3-1 / Chapter 3.2 --- Analysis of DC Transformed Energy Using Mathematical Covariance Models --- p.3-1 / Chapter 3.2.1 --- First-Order Markov Process --- p.3-1 / Chapter 3.2.2 --- Separable Model --- p.3 -3 / Chapter 3.2.3 --- Non-Separable Isotropic Model --- p.3-4 / Chapter 3.2.4 --- Results --- p.3-5 / Chapter 3.3 --- Chen and Smith Method and Experimental Results --- p.3-7 / Chapter 3.4 --- Concluding Remarks --- p.3-15 / Chapter 4 --- COMPATIBILITY OF THE DCT AND ICT / Chapter 4.1 --- Introduction --- p.4-1 / Chapter 4.2 --- The Discrete Cosine Transform (DCT) --- p.4 -2 / Chapter 4.3 --- The Family of Interger Cosine Transforms (ICT) --- p.4 -3 / Chapter 4.4 --- Analysis of Error Due to Different Forward and Inverse Transforms --- p.4 -8 / Chapter 4.4.1 --- First-Order Markov Process --- p.4-8 / Chapter 4.4.2 --- Separable Model --- p.4-10 / Chapter 4.4.3 --- Non-Separable Isotropic Model --- p.4-12 / Chapter 4.5 --- Results --- p.4-14 / Chapter 4.6 --- Concluding Remarks --- p.4 -18 / Chapter 5 --- ERROR BEHAVIOUR OF THE DCT AND THE ICT / Chapter 5.1 --- Introduction --- p.5 -1 / Chapter 5.2 --- Problem Identification --- p.5 -1 / Chapter 5.2.1 --- Error Distribution and Energy Due to Rounding Operation --- p.5-2 / Chapter 5.2.2 --- Error Distribution and Energy Due to Linear Transformation --- p.5-3 / Chapter 5.2.3 --- Estimation of Residual Error Energy --- p.5-6 / Chapter 5.3 --- Error Energy in the One-Dimensional Order-8 DCT System --- p.5-8 / Chapter 5.4 --- Error Energy in the One-Dimensional Order-8 ICT(4) System --- p.5-11 / Chapter 5.5 --- Error Energy in the Two-Dimensional Order-8 DCT System --- p.5-13 / Chapter 5.6 --- Error Energy in the Two-Dimensional Order-8 ICT(4) System --- p.5-16 / Chapter 5.7 --- Error Energy in Other Transform Systems --- p.5-19 / Chapter 5.7.1 --- Error Energy in the Two-Dimensional Order-16 DCT System --- p.5-20 / Chapter 5.7.2 --- Error Energy in the One-Dimensional Order-16 ICT(7) System --- p.5-21 / Chapter 5.7.3 --- Error Energy in the Two-Dimensional Order-16 ICT(7) System --- p.5 -21 / Chapter 5.8 --- Results --- p.5 -22 / Chapter 5.9 --- Concluding Remarks --- p.5 -24 / Chapter 6 --- CONCLUSIONS --- p.6-1 / Chapter 6.1 --- Summary of Work --- p.6-1 / Chapter 6.2 --- Contribution of the Work --- p.6-2 / Chapter 6.3 --- Recommendation for Further Work --- p.6-3 / Chapter 7 --- REFERENCES --- p.7 -1 / Chapter 8 --- APPENDIX / Chapter A.1 --- Separability of KLTs --- p.A -1 / Chapter A.2 --- Derivation of DCT and KLT DC Transformed Energy --- p.A -2 / First-Order Maikov Process --- p.A -2 / Separable Model --- p.A -3 / Non-Separable Isotropic Model --- p.A -4 / RESULTS
7

Orthogonal transforms in digital image coding.

January 1989 (has links)
by Lo Kwok Tung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1989. / Bibliography: leaves [71-74]
8

Transform coding of image.

January 1988 (has links)
by Pui-chiu Yip. / Thesis (M.Ph.)--Chinese University of Hong Kong, 1988. / Bibliography: leaves 92-94.
9

Compressing the illumination-adjustable images with principal component analysis.

January 2003 (has links)
Pun-Mo Ho. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 90-95). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Existing Approaches --- p.2 / Chapter 1.3 --- Our Approach --- p.3 / Chapter 1.4 --- Structure of the Thesis --- p.4 / Chapter 2 --- Related Work --- p.5 / Chapter 2.1 --- Compression for Navigation --- p.5 / Chapter 2.1.1 --- Light Field/Lumigraph --- p.5 / Chapter 2.1.2 --- Surface Light Field --- p.6 / Chapter 2.1.3 --- Concentric Mosaics --- p.6 / Chapter 2.1.4 --- On the Compression --- p.7 / Chapter 2.2 --- Compression for Relighting --- p.7 / Chapter 2.2.1 --- Previous Approaches --- p.7 / Chapter 2.2.2 --- Our Approach --- p.8 / Chapter 3 --- Image-Based Relighting --- p.9 / Chapter 3.1 --- Plenoptic Illumination Function --- p.9 / Chapter 3.2 --- Sampling and Relighting --- p.11 / Chapter 3.3 --- Overview --- p.13 / Chapter 3.3.1 --- Codec Overview --- p.13 / Chapter 3.3.2 --- Image Acquisition --- p.15 / Chapter 3.3.3 --- Experiment Data Sets --- p.16 / Chapter 4 --- Data Preparation --- p.18 / Chapter 4.1 --- Block Division --- p.18 / Chapter 4.2 --- Color Model --- p.23 / Chapter 4.3 --- Mean Extraction --- p.24 / Chapter 5 --- Principal Component Analysis --- p.29 / Chapter 5.1 --- Overview --- p.29 / Chapter 5.2 --- Singular Value Decomposition --- p.30 / Chapter 5.3 --- Dimensionality Reduction --- p.34 / Chapter 5.4 --- Evaluation --- p.37 / Chapter 6 --- Eigenimage Coding --- p.39 / Chapter 6.1 --- Transform Coding --- p.39 / Chapter 6.1.1 --- Discrete Cosine Transform --- p.40 / Chapter 6.1.2 --- Discrete Wavelet Transform --- p.47 / Chapter 6.2 --- Evaluation --- p.49 / Chapter 6.2.1 --- Statistical Evaluation --- p.49 / Chapter 6.2.2 --- Visual Evaluation --- p.52 / Chapter 7 --- Relighting Coefficient Coding --- p.57 / Chapter 7.1 --- Quantization and Bit Allocation --- p.57 / Chapter 7.2 --- Evaluation --- p.62 / Chapter 7.2.1 --- Statistical Evaluation --- p.62 / Chapter 7.2.2 --- Visual Evaluation --- p.62 / Chapter 8 --- Relighting --- p.65 / Chapter 8.1 --- Overview --- p.66 / Chapter 8.2 --- First-Phase Decoding --- p.66 / Chapter 8.3 --- Second-Phase Decoding --- p.68 / Chapter 8.3.1 --- Software Relighting --- p.68 / Chapter 8.3.2 --- Hardware-Assisted Relighting --- p.71 / Chapter 9 --- Overall Evaluation --- p.81 / Chapter 9.1 --- Compression of IAIs --- p.81 / Chapter 9.1.1 --- Statistical Evaluation --- p.81 / Chapter 9.1.2 --- Visual Evaluation --- p.86 / Chapter 9.2 --- Hardware-Assisted Relighting --- p.86 / Chapter 10 --- Conclusion --- p.89 / Bibliography --- p.90
10

Imaging systems based on the encoding of optical coherence functions

James, Jonathan C. 08 1900 (has links)
No description available.

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