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Perceptual Organization as a Foundation for Intelligent Sketch Editing

Perceptual Organization as a Foundation for Intelligent Sketch Editing. Eric Saund James Mahoney David Fleet Daniel Larner Edward Lank Palo Alto Research Center. Goal: Intelligent Sketch Editing. Central Problem: Selection.

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Perceptual Organization as a Foundation for Intelligent Sketch Editing

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  1. Perceptual Organization as a Foundation forIntelligent Sketch Editing • Eric Saund • James Mahoney • David Fleet • Daniel Larner • Edward Lank • Palo Alto Research Center

  2. Goal: Intelligent Sketch Editing

  3. Central Problem: Selection Goal: Simple, easy user actions to select desired image material (e.g. tap, click, crude gesture). WYPIWYG: What You Perceive is What You Get

  4. ! • make available • generic visual structure • foundation for • domain-specific recognition Perceptual Organization Motivation Choice: What degree of prior domain knowledge? Prior Domain Knowledge domain structure editors high "paint" editors low

  5. Gestalt Rules of Perceptual Organization ? Which dot is on an object? What are the objects? • Closure • Smooth Continuation Although algorithms are empirically more top level, the level of Me gustaria aprovechar saludarlos y darles la information de interes and mechanisms accessible, it is the computational theory esta oportunidad para bienvenida a ofrecer en espanol, Nicaragua • Symmetry • Similarity • Coherent Motion Identify the text groups • Proximity

  6. Perceptual Structure in Sketches

  7. The ScanScribe Document Image Editor • I. GUI substrate • convenient encircling gestures • implicit creation of image objects • management of grouping structure

  8. composite prime Image/Stroke Data Primitives Groups The ScanScribe Document Image Editor • I. GUI substrate • convenient encircling gestures • implicit creation of image objects • management of grouping structure • II. Automatic structure detection • grouping/P.O.

  9. Extracting Primitives Image image processing contour tracing thinning junction detection line following corner detection shape classification Prime Objects

  10. Perceptual Grouping C C C A Line Art Text analyze local spatial relations form links assemble larger structures: Composite Objects Text_Run Closed_Path

  11. ambiguous potential combinatorial explosion Curvilinear Continuity clear

  12. maximally-turning smooth-continuation Curvilinear Closure

  13. Text Layout

  14. Key Problem: Ambiguity Local evidence is insufficient. Research problem: effective use of spatially extended context.

  15. Conclusion Intelligent Sketch Editing • Easy selection of visually-salient material • Recognition at the level of • Perceptual Organization • Research-prototype: • the ScanScribe image editor

  16. P.O. Level Structuring Image/Stroke Data Primitives Groups

  17. Line-art and Text Prime objects can serve multiple roles.

  18. Goal: Intelligent Sketch Editing

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