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Computational Support for Sketching in Design: A Review
    Foundations and Trends in HCI volume 2, number 1 2009
    Computational support for sketching is an exciting research area at
    the intersection of design research, human–computer interaction, and
    artificial intelligence. Despite the prevalence of software tools, most
    designers begin their work with physical sketches. Modern computational
    tools largely treat design as a linear process beginning with
    a specific problem and ending with a specific solution. Sketch-based
    design tools offer another approach that may fit design practice better.
    This review surveys literature related to such tools. First, we describe
    the practical basis of sketching — why people sketch, what significance
    it has in design and problem solving, and the cognitive activities
    it supports. Second, we survey computational support for sketching,
    including methods for performing sketch recognition and managing
    ambiguity, techniques for modeling recognizable elements, and human–
    computer interaction techniques for working with sketches. Last, we
    propose challenges and opportunities for future advances in this field