Sketch Learning Environment with Diagnosis and Drawing Guidance from Rough Form to Detailed Contour Form

Abstract

There exist many systems and software that support drawing or painting on computers. However, learning support for drawing or painting is a task that differs from drawing support or painting support. Functions for diagnosis and advice are required for learning support. Our project was the first learning environment that could diagnose a learner's sketch and then provide advice.In addition, our environments are capable of diagnosing sketches drawn on real paper. This function is a unique feature of our environments, and it is important for learners, because drawing on a paper using a real pencil requires a different skill as compared to drawing on a virtual paper using a mouse or a stylus pen.We developed a new sketch learning environment that provides diagnosis and drawing support from a rough drawing to a detailed contour drawing. We use a cup and a dish as motifs. When a learner uses the environment, the environment first requires the learner to draw a circumscribed rectangle of the motifs' view. Then, the environment diagnoses the circumscribed rectangle and advises the learner of errors, if any. The environment guides the learner from a rough form to a detailed contour drawing by repeatedly drawing circumscribed rectangles.We evaluated the environment and confirmed a significant learning effect. Fig. 1.The left-handed side shows a sketch being drawn on a paper on the tablet Intuos 3 using the improved grip pen by observing motifs on a table. Right-hand side shows all auxiliary lines that are used for guiding the learner from a rough form to a detailed contour form. The numbers for each auxiliary line indicates the order of drawing and diagnosis.

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