Sungwoo, LimSungwoo, Lim

CAD centreCAD centre

Sungwoo, LimSungwoo, Lim

CAD centreCAD centre

Supervisor: Dr. Alex H B DuffySupervisor: Dr. Alex H B Duffy Dr. B S LeeDr. B S Lee

Supervisor: Dr. Alex H B DuffySupervisor: Dr. Alex H B Duffy Dr. B S LeeDr. B S Lee

Incremental Modelling of Ambiguous Incremental Modelling of Ambiguous Geometric Ideas (Geometric Ideas (I-MAGII-MAGI))

Incremental Modelling of Ambiguous Incremental Modelling of Ambiguous Geometric Ideas (Geometric Ideas (I-MAGII-MAGI))

RPD01/sw/2/9

ContentsContentsContentsContents

Definition of Vague Geometric Model (Definition of Vague Geometric Model (VGMVGM)) Definition of Vague Geometric Model (Definition of Vague Geometric Model (VGMVGM))

Overview of Overview of prototype systemprototype system process process Overview of Overview of prototype systemprototype system process process

Progress of the projectProgress of the project Progress of the projectProgress of the project

Functions of vague geometric modelling(Functions of vague geometric modelling(VGMingVGMing)) Functions of vague geometric modelling(Functions of vague geometric modelling(VGMingVGMing))

Sketching in the design processSketching in the design process Sketching in the design processSketching in the design process

The hierarchical area of the research problemThe hierarchical area of the research problem The hierarchical area of the research problemThe hierarchical area of the research problem

ConclusionConclusion ConclusionConclusion

RPD01/sw/3/9

Sketching in the design processSketching in the design processSketching in the design processSketching in the design process

The use of sketching.The use of sketching. The use of sketching.The use of sketching.- fast expression of their early design ideas.- fast expression of their early design ideas.

- handle a vagueness of ideas for more flexible creativity.- handle a vagueness of ideas for more flexible creativity.

Sketching in the design process. Sketching in the design process. (Pahl and Beitz)(Pahl and Beitz) Sketching in the design process. Sketching in the design process. (Pahl and Beitz)(Pahl and Beitz)

ClarificationClarificationof the designof the design

ConceptualConceptualdesigndesign

EmbodimentEmbodimentdesigndesign

Detail designDetail design

SketchingSketching

RPD01/sw/4/9

Vague shape modelling(VSMing)

Vague shape modelling(VSMing)

Geometric modelling

Line tidy2D Sketching

Geometric model reconstruction

3D Sketching

Hidden line construction

2D/3D shape recognition

Symbol/diagram recognition

Geometric model structure analysis

Sketching recognition

Detail designDetail designEmbodiment designEmbodiment design

Conceptual designConceptual design

Classification of taskClassification of task

SketchingSketching

Spatial arrangement

Basic 3D Direction Analysis

Location Constraints

Uncertain Region

Spatial arrangement & analysis

Vague spatial relationships

Design environment support

Interface Programming without Coding

Retrieval by Partial Elements

Retrieval by Image

Universal Modelling Interface

GUI builder by sketching

Retrieval of design elements

Front-end interface system

The hierarchical address of the research problemThe hierarchical address of the research problemThe hierarchical address of the research problemThe hierarchical address of the research problem

RPD01/sw/5/9

Definition of Vague Geometric Model Definition of Vague Geometric Model ((VGMVGM))

Definition of Vague Geometric Model Definition of Vague Geometric Model ((VGMVGM))

Definition of Definition of VGMVGM::

A geometric model which implicates ill-defined A geometric model which implicates ill-defined abstraction, numerical value and/or spatial abstraction, numerical value and/or spatial information.information.

Definition of Definition of VGMingVGMing::

A modelling method that can represent and maintain A modelling method that can represent and maintain the vague information contained in a vague the vague information contained in a vague geometric model (geometric model (VGMVGM).).

RPD01/sw/6/9

Functions of Vague Geometric Modelling Functions of Vague Geometric Modelling ((VGMingVGMing))

Functions of Vague Geometric Modelling Functions of Vague Geometric Modelling ((VGMingVGMing))

Representation of vague informationRepresentation of vague information Representation of vague informationRepresentation of vague information

Maintenance of vague informationMaintenance of vague information Maintenance of vague informationMaintenance of vague information

- Various likelihoods of line meanings.- Various likelihoods of line meanings.

- Incremental update.- Incremental update.

- Similarly, for shapes, put in a hierarchy.- Similarly, for shapes, put in a hierarchy.- Customised viewpoints.- Customised viewpoints.

- Modification.- Modification.- Retrieval by various criteria.- Retrieval by various criteria.

RPD01/sw/7/9

Overview of Overview of prototype systemprototype system process processOverview of Overview of prototype systemprototype system process process

Pre-processor

Processor Post-processor

Input Output

AGM

VGM

75%

20%

3%

2%

Dimensioning2D to 3D

Vertexes and intersection points

Relative Spatial

Relation

Clustering by

multiple aspect

Hierarchical Probabilities

E

C O

P S Cr

T R P A El Co

RPD01/sw/8/9

Progress of the projectProgress of the projectProgress of the projectProgress of the project

Design Problem

Hypothesis

Research Problem

Solution

Formal Evaluation

Document

LiteratureDesignPractice

RPD01/sw/9/9

ConclusionConclusionConclusionConclusion

Visualisation of conceptual models, which contains various Visualisation of conceptual models, which contains various vague information in the form of sketches, is important to vague information in the form of sketches, is important to support a more flexible and dynamic design.support a more flexible and dynamic design.

Visualisation of conceptual models, which contains various Visualisation of conceptual models, which contains various vague information in the form of sketches, is important to vague information in the form of sketches, is important to support a more flexible and dynamic design.support a more flexible and dynamic design.

Current approaches do not offer any method of representing and Current approaches do not offer any method of representing and managing vague information often found in conceptual ideas.managing vague information often found in conceptual ideas.

Current approaches do not offer any method of representing and Current approaches do not offer any method of representing and managing vague information often found in conceptual ideas.managing vague information often found in conceptual ideas.

A possible approach to the vague geometric modelling, based on A possible approach to the vague geometric modelling, based on hierarchical structure and probabilistic method, and its hierarchical structure and probabilistic method, and its associated issues have been briefly presented.associated issues have been briefly presented.

A possible approach to the vague geometric modelling, based on A possible approach to the vague geometric modelling, based on hierarchical structure and probabilistic method, and its hierarchical structure and probabilistic method, and its associated issues have been briefly presented.associated issues have been briefly presented.

A prototype with most of the ideas put forward here is under A prototype with most of the ideas put forward here is under development, and when it is available, a more flexible and development, and when it is available, a more flexible and realistic evaluation of the idea will be possible.realistic evaluation of the idea will be possible.

A prototype with most of the ideas put forward here is under A prototype with most of the ideas put forward here is under development, and when it is available, a more flexible and development, and when it is available, a more flexible and realistic evaluation of the idea will be possible.realistic evaluation of the idea will be possible.