Lam, Hiu Man. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 84-89). / Abstracts in English and Chinese. / Chapter Chapter 1: --- Introduction --- p.1 / Chapter 1.1. --- Overview on Robotics --- p.1 / Chapter 1.2. --- Literture Review on Art-Robot --- p.1 / Chapter 1.3. --- Robot artist for Chinese Calligraphy and Paintings --- p.3 / Chapter 1.4. --- Motivation and Research Objective --- p.4 / Chapter 1.5. --- Thesis Outline --- p.5 / Chapter Chapter 2: --- Intelligent Robotic Art System --- p.6 / Chapter 2.1. --- Previous Configuration --- p.6 / Chapter 2.1.1. --- 3 DOF Manipulator --- p.7 / Chapter 2.1.2. --- Digital Image Input System --- p.7 / Chapter 2.2. --- Hardware Modification --- p.8 / Chapter 2.2.1. --- Additional Degree of Freedoms --- p.8 / Chapter 2.2.2. --- Infra-red Sensing System for Manipulator Positioning --- p.9 / Chapter 2.2.3. --- Axial-rotary Brush --- p.11 / Chapter 2.2.4. --- Interface program --- p.13 / Chapter 2.2.5. --- Vibration Reduction --- p.16 / Chapter Chapter 3: --- Skeletonization Based on Delaunay Triangulation and Bezier Interpolation --- p.18 / Chapter 3.1. --- Background Theory --- p.20 / Chapter 3.1.1. --- Smoothed Local Symmetry --- p.20 / Chapter 3.1.2. --- Delaunay Triangulation --- p.21 / Chapter 3.1.3. --- Bezier Curve --- p.23 / Chapter 3.2. --- Algorithm --- p.24 / Chapter 3.2.1. --- Edge Sampling --- p.24 / Chapter 3.2.2. --- Triangle Modification --- p.26 / Chapter 3.2.3. --- Triangle Filtering and Replacement --- p.28 / Chapter 3.2.4. --- Internal Edge Refinement --- p.30 / Chapter 3.2.5. --- Skeletal Interpolation --- p.31 / Chapter 3.3. --- Experiments --- p.32 / Chapter 3.4. --- Chapter Summary --- p.36 / Chapter Chapter 4: --- Stroke Segmentation for Chinese Words --- p.37 / Chapter 4.1. --- Rule-based Spurious Branches Removal --- p.38 / Chapter 4.1.1. --- Spurious Branch in Stroke Terminal --- p.40 / Chapter 4.1.2. --- Spurious Branch Caused by Turning Stroke --- p.42 / Chapter 4.2. --- Stroke Connectivity Determination --- p.44 / Chapter 4.2.1. --- Gradient of Medial Axis --- p.45 / Chapter 4.2.2. --- Gradient of Branch Boundary --- p.47 / Chapter 4.2.3. --- Branch Width --- p.49 / Chapter 4.2.4. --- Combined Objective Function --- p.50 / Chapter 4.3. --- Stroke Generation --- p.51 / Chapter 4.3.1. --- Stroke Connection between Branches --- p.52 / Chapter 4.3.2. --- Stroke Generation in Stroke Terminal --- p.53 / Chapter 4.4. --- Experiment Using Intelligent Robotic Art System --- p.54 / Chapter 4.5. --- Discussion --- p.59 / Chapter Chapter 5: --- Experimental Acquisition of Brush Footprints --- p.61 / Chapter 5.1. --- Brush Footprint Extraction --- p.62 / Chapter 5.2. --- Graphical Interface for Inputting Sample Points of Brush Footprints --- p.64 / Chapter 5.3. --- Curve Fitting for Brush Footprint Sample Points --- p.70 / Chapter 5.3.1. --- Curve Fitting Using Genetic Algorithm --- p.70 / Chapter 5.3.2. --- Curve Fitting by Least Squares Regression --- p.72 / Chapter 5.4. --- Discussion --- p.74 / Chapter Chapter 6: --- Trajectory Generation for Robotic Chinese Calligraphy --- p.75 / Chapter 6.1. --- Stroke Trajectory Searching with According Stroke Width --- p.75 / Chapter 6.2. --- Improvement in Stroke Trajectory --- p.77 / Chapter 6.3. --- Experiment --- p.80 / Conclusion and Future Work --- p.82 / References --- p.84 / Appendix --- p.90 / Chapter 9.1. --- Segmented Strokes of Bada Shanren's Calligraphy --- p.90

University of Macau / Faculty of Science and Technology. / Department of Computer and Information Science

published_or_final_version / abstract / Linguistics / Master / Master of Arts

University of Macau / Faculty of Science and Technology. / Department of Computer and Information Science

Kwok, Ka Wai. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 113-116). / Abstracts in English and Chinese. / ABSTRACT --- p.i / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 1.1 --- Artistic robot in western art --- p.1 / Chapter 1.2 --- Chinese calligraphy robot --- p.2 / Chapter 1.3 --- Our robot drawing system --- p.3 / Chapter 1.4 --- Thesis outline --- p.3 / Chapter 2. --- ROBOT DRAWING SYSTEM --- p.5 / Chapter 2.1 --- Robot drawing manipulation --- p.5 / Chapter 2.2 --- Input modes --- p.6 / Chapter 2.3 --- Visual-feedback system --- p.8 / Chapter 2.4 --- Footprint study setup --- p.8 / Chapter 2.5 --- Chapter summary --- p.10 / Chapter 3. --- LINE STROKE EXTRACTION AND ORDER ASSIGNMENT --- p.11 / Chapter 3.1 --- Skeleton-based line trajectory generation --- p.12 / Chapter 3.2 --- Line stroke vectorization --- p.15 / Chapter 3.3 --- Skeleton tangential slope evaluation using MIC --- p.16 / Chapter 3.4 --- Skeleton-based vectorization using Bezier curve interpolation --- p.21 / Chapter 3.5 --- Line stroke extraction --- p.25 / Chapter 3.6 --- Line stroke order assignment --- p.30 / Chapter 3.7 --- Chapter summary --- p.33 / Chapter 4. --- PROJECTIVE RECTIFICATION AND VISION-BASED CORRECTION --- p.34 / Chapter 4.1 --- Projective rectification --- p.34 / Chapter 4.2 --- Homography transformation by selected correspondences --- p.35 / Chapter 4.3 --- Homography transformation using GA --- p.39 / Chapter 4.4 --- Visual-based iterative correction example --- p.45 / Chapter 4.5 --- Chapter summary --- p.49 / Chapter 5. --- ITERATIVE ENHANCEMENT ON OFFSET EFFECT AND BRUSH THICKNESS --- p.52 / Chapter 5.1 --- Offset painting effect by Chinese brush pen --- p.52 / Chapter 5.2 --- Iterative robot drawing process --- p.53 / Chapter 5.3 --- Iterative line drawing experimental results --- p.56 / Chapter 5.4 --- Chapter summary --- p.67 / Chapter 6. --- GA-BASED BRUSH STROKE GENERATION --- p.68 / Chapter 6.1 --- Brush trajectory representation --- p.69 / Chapter 6.2 --- Brush stroke modeling --- p.70 / Chapter 6.3 --- Stroke simulation using GA --- p.72 / Chapter 6.4 --- Evolutionary computing results --- p.77 / Chapter 6.5 --- Chapter summary --- p.95 / Chapter 7. --- BRUSH STROKE FOOTPRINT CHARACTERIZATION --- p.96 / Chapter 7.1 --- Footprint video capturing --- p.97 / Chapter 7.2 --- Footprint image property --- p.98 / Chapter 7.3 --- Experimental results --- p.102 / Chapter 7.4 --- Chapter summary --- p.109 / Chapter 8. --- CONCLUSIONS AND FUTURE WORKS --- p.111 / BIBLIOGRAPHY --- p.113

Footprint analysis of brush-pen is an important part of studying Chinese drawing and painting. The designed platform is capable to capture and analysis of the brush footprint in real-time. Transparent drawing plate and an underneath camera system are installed, together with projective rectification and video segmentation algorithms, analog footprint can be transformed to digital data. Both non-parametric and parametric modeling on the captured footprint data will be explored in this thesis. Dynamics and time-delay will also be studied. The results are demonstrated by producing a well-known Chinese calligraphy in our study. / Robot drawing is an integrated study in the fields of robotics, machine intelligence, genetic algorithms (GA), rule base techniques, and expert system, etc. Besides looking into sophisticated methods in manipulator planning and control, robot drawing also aims to fulfill a human desire to put creativity in machines and to explore a basic question: can art be programmed? In this thesis, we report on the design and construction of a robot platform in our laboratory geared toward the production of Chinese painting and calligraphy which we will use to explore some of the above issues. / This thesis aims to report on the design and development of a robot drawing platform supporting a pen motion with five degrees of freedom (x, y, and z translation, z-rotation, and pitch) of a brush-pen motion in our laboratory. The platform is interfaced with a camera system and a writing tablet via a window based PC. The integration programming language is Visual Basic 6, with direct access to MATLAB for image processing and the needed computation. The objective of design is to have a platform that is highly accurate and repeatability, easy to command, versatile and user friendly, etc. / This thesis also describes the addition of vision-based capabilities in the platform. Those vision feedback measures have to be calibrated by using optimization method or Genetic Algorithm. Various examples of how the vision information can be used to improve various aspects of the drawing quality in iterative drawing will be demonstrated. / by Lo, Ka Wah. / "August 2007." / Adviser: Yan Yeung. / Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 1285. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (p. 143-147). / 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, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract in English and Chinese. / School code: 1307.

In addition to the ED-EC framework, this thesis proposes a discriminative lattice rescoring (DLR) algorithm to facilitate the investigation of the extensibility of the framework. The DLR method recasts a discriminative n-gram model as a pseudo-conventional n-gram model and then uses this recast model to perform lattice rescoring. DLR improves the efficiency of discriminative n-gram modeling and facilitates combined processing of discriminative n-gram modeling with other post-processing techniques such as the ED-EC framework. / This thesis proposes an error detection and correction (ED-EC) framework to incorporate advanced linguistic knowledge sources into large vocabulary continuous speech recognition. Previous efforts that apply sophisticated language models (LMs) in speech recognition normally face a serious efficiency problem due to the intense computation required by these models. The ED-EC framework aims to achieve the full benefit of complex linguistic sources while at the same time maximize efficiency. The framework attempts to only apply computationally expensive LMs where needed in input speech. First, the framework detects recognition errors in the output of an efficient state-of-the-art decoding procedure. Then, it corrects the detected errors with the aid of sophisticated LMs by (1) creating alternatives for each detected error and (2) applying advanced models to distinguish among the alternatives. In this thesis, we implement a prototype of the ED-EC framework on the task of Mandarin dictation. This prototype detects recognition errors based on generalized word posterior probabilities, selects alternatives for errors from recognition lattices generated during decoding and adopts an advanced LM that combines mutual information, word trigrams and POS trigrams. The experimental results indicate the practical feasibility of the ED-EC framework, for which the optimal gain of the focused LM is theoretically achievable at low computational cost. On a general-domain test set, a 6.0% relative reduction in character error rate (CER) over the performance of a state-of-the-art baseline recognizer is obtained. In terms of efficiency, while both the detection of errors and the creation of alternatives are efficient, the application of the computationally expensive LM is concentrated on less than 50% of the utterances. We further demonstrate that the potential benefit of using the ED-EC framework in improving the recognition performance is tremendous. If error detection is perfect and alternatives for an error are guaranteed to include the correct one, the relative CER reduction over the baseline performance will increase to 36.0%. We also illustrate that the ED-EC framework is robust on unseen data and can be conveniently extended to other recognition systems. / Zhou, Zhengyu. / Adviser: Helen Mei-Ling Meng. / Source: Dissertation Abstracts International, Volume: 72-11, Section: B, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 142-155). / 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. / Abstract also in Chinese.

A web-aided query translation expansion method in Cross-Language Information Retrieval (CLIR) is presented in this study. The method is applied to English/Chinese language pair, in which queries are expressed in English and the documents returned are in Chinese. Among the three main categories of CLIR methods of machine translation (MT), dictionary translation using a machine-readable dictionary (MRD), and parallel corpus, our method is based on the second one. MRD-based method is easy to implement. However, it faces the resource limitation problem, i.e., the dictionary is often incomplete leading to poor translation and hence undesirable results. By combining MRD and web-aided query translation expansion technique, good retrieval performance can be achieved. The performance gain is largely due to the successful translation extraction of relevant words of a query term from online texts. A new Chinese word discovery algorithm, which extracts words from continuous Chinese characters was designed and used for this purpose. The extracted relevant words do not only include the precise translation of a query term, but also those words that are relevant to that term in the source language. / Jin Honglan. / "October 2005." / Adviser: Kam Fai Wong. / Source: Dissertation Abstracts International, Volume: 67-07, Section: B, page: 3899. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (p. 115-121). / 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, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract in English and Chinese. / School code: 1307.

The project developed a web-based application that provides a user-friendly interface to assist practitioners of traditional Chinese medicine in determining the correct diagnosis. Traditional Chinese Medicine On-line Diagnosis System (TCMODS) allows a diagnostician to enter a patient's symptoms using a series of questionnaires to determine health status, which will then be stored in the database as part of the patient's medical records. The database will also differentiate among the patterns of syndromes known in traditional Chinese medicine and search and match these with the patient's data to the known uses of Chinese herbs. TCMODS will then generate that patient's medical record, including the symptoms of the ailment, the syndrome, and a prescription. User identification and access privileges were differentiated in order to maintain the integrity of the patient medical data and the information needed to make the diagnoses. The project was designed to function across platforms and was written using HTML, JSP, and MySQL.