Survey of Pen-and-Paper Computing - Human-Computer Interaction - page 51

Fig. 2.14 PaperProof automatically interprets proofreading marks made on a printout (left) and
applies them to the document in the word processor (right) (photo courtesy of Nadir Weibel)
large maps in geographic information systems [94]. Another example, Musink , sup-
ports annotations on musical partitions [154]. The system automatically analyzes
them and integrates the printed partitions with OpenMusic, a computer-based music
composition tool.
ModelCraft demonstrates that pen-and-paper annotations are not restricted to flat
paper. The system supports handwritten annotations on physical 3D models that are
made of paper [140]. Figure 2.15 shows a 3D model with some annotations. The
annotations are automatically added to the underlying CAD model. However, in
contrast to flat documents which can be easily re-printed, creating updated versions
of physical models requires manual work. This limits the paper-digital annotation
lifecycle.
One important benefit of digitized annotations is that they are not bound to the
physical medium they have originally been made on. Hence, they can be more easily
shared with other people, either in co-located settings or over distance:
Fig. 2.15 ModelCraft provides for annotating three-dimensional paper models (photo courtesy of
Hyunyoung Song)