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Vague rendering of design sketches

Vague rendering of design sketches. Student: Ms. Raji Tenneti Supervisor: Dr. Alex Duffy. DMEM. Aim of the research. To develop a model that supports the designer's natural working method and promotes the maintenance of flexibility (least commitment) using vague rendering. DMEM. Objectives.

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Vague rendering of design sketches

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  1. Vague rendering of design sketches Student: Ms. Raji Tenneti Supervisor: Dr. Alex Duffy DMEM

  2. Aim of the research To develop a model thatsupports the designer's natural working method and promotes the maintenance of flexibility (least commitment) using vague rendering. DMEM

  3. Objectives • To study the various features of rendering in early stage design • To preserve the vague information inherent in a sketch during sketch rendering for better visualisation and conveyance of information • To provide the opportunity to view the possible alternatives in the rendered form without disturbing the original sketch. DMEM

  4. Current research • Most of the current research focuses on rendering in later stages of design. • Few related work in rendering: Sketch Renderer (Strothotte et al); Kazoo (Stuart Green) and Gooch et al presented a non photo realistic lighting model. • No work in rendering focused on using vague information of design sketches during early stage design. • Lack and poor development of visualisation techniques in early stage design. DMEM

  5. Problems with current systems • Conceptual ideas should be defined into precise information. • Cannot retain the vague information in a sketch. • CAD model can represent only one alternative and will lose some hidden information. • Lack of differentiation between essential and extraneous information. • Not suited for communicating ideas. DMEM

  6. Focus • Study the effect of different aspects of rendering which help in visualisation during early stage design. • Develop algorithms that convey different visual information using vague information of the design sketches. • A model of vague rendering of design sketches. DMEM

  7. Methodology • Questionnaire: To study different aspects of rendering in early stage design Sample size: 60 Respondents: 3rd year undergraduate students and faculty in DMEM Department. • Graphical and statistical analysis SPSS DMEM

  8. ResultsPhotorealistic – Non photorealistic methods

  9. ResultsImportance of rendering in early stage design 4 3 2 Increase in importance 1 0 Communication Speed of rendering Visualization Quality Variables DMEM

  10. ResultsPrecision of information used in early stage design DMEM

  11. ResultsCorrelation between Non-photo realistic rendering and Precision of information used in early stage 6 Correlation= -0.158 5 4 3 Importance 2 1 0 0 1 2 3 4 5 6 Very Vague Very precise DMEM

  12. ResultsElements used during generation of concepts DMEM

  13. ResultsDissatisfaction with present rendering tools

  14. Key Conclusions • More than 50% applicability of rendering in early stage design for better visualisation and communication of design ideas. • Non-photo realistic rendering is used in early stage design for exploration of different design concepts. • Early stage design focuses mainly on conveying information rather than quality of the output. • Fairly vague to very precise information is used during early stage design DMEM

  15. Key Conclusions (….contd) • Increase in use of non-photo realistic rendering in early stage design increases the use of less precise information to convey design ideas. • Factors like vague shape, lines and vague surface are equally important as other product aspects(such as colour, light, material) during generation of concepts. • Absence of sketchy look, lack of differentiation between essential and non-essential information, absence of alternate solutions and absence of exploring ideas are some of the dissatisfying factors in the present systems. DMEM

  16. Closing • A study concerning different aspects of rendering was carried out in the form of a questionnaire. • Develop algorithms for better visualisation using vague information. • Develop a model of vague rendering of design sketches. • Test and evaluate the model using experiments, interviews and questionnaires. DMEM

  17. Thank You! Questions? Email: raji@cad.strath.ac.uk DMEM

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