A subdivision-based representation for vector image editing
IEEE Trans. Vis. Comput. Graphics, 18(11), Nov. 2012. (Presented at I3D 2013.)
Piecewise-smooth subdivision for representing and manipulating images.
Vector graphics has been employed in a wide variety of applications due to its scalability and editability.
Editability is a high priority for artists and designers who wish to produce vector-based graphical content
with user interaction. In this paper, we introduce a new vector image representation based on piecewise
smooth subdivision surfaces, which is a simple, unified and flexible framework that supports a variety of
operations, including shape editing, color editing, image stylization, and vector image processing. These
operations effectively create novel vector graphics by reusing and altering existing image vectorization
results. Because image vectorization yields an abstraction of the original raster image, controlling the
level of detail of this abstraction is highly desirable. To this end, we design a feature-oriented vector
image pyramid that offers multiple levels of abstraction simultaneously. Our new vector image
representation can be rasterized efficiently using GPU-accelerated subdivision. Experiments indicate that
our vector image representation achieves high visual quality and better supports editing operations than
Using a common subdivision process to define both the geometric outlines and the (piecewise) smooth color
field is elegant.