A Simple Approach to Recognise Geometric Shapes Interactively
Chen Xin-sheng · Computer Technology and Development · 2008
Presents a simple method to recognise multi-strokes sketches of geometric shapes.It uses temporal adjacency and global properties of figures to recognise a simple vocabulary of geometric shapes including solid and dashed line styles,selection and deleting gestures.The geometric features used(convex hull,smallest-area regular polygons,perimeter and area scalar ratios)are invariant with rotation and scale of figures.Found the method very usable with acceptable recognition rates although the multi-stroke approach poses problems in choosing appropriate values for time-outs.