This workshop paper presents digital inking software tools designed to aid and enhance the capabilities of HCI practitioners. The advantages of using these inking tools as part of a HCI practitioners’ toolkit are firstly to aid in user design and testing with non-technical participants, based on the aesthetic simulacra of digital inking methods as they closely mimic pen-based approaches. Second...

Non-contact micro dispensing technologies have turned out to be ubiquitous tools in various industries and applications over the past decades. The well-known ink-jet printing technology – to give a prominent example – has paved the way to digital printing and still plays an important role in industrial fabrication together with micro-dispensing valves used in a large variety of applications. Th...

Most sketch recognition systems are accurate in recognizing either text or shape (graphic) ink strokes, but not both. Distinguishing between shape and text strokes is, therefore, a critical task in recognizing hand-drawn digital ink diagrams that contain text labels and annotations. We have found the 'en-tropy rate' to be an accurate criterion of classification. We found that the entropy rate i...

Many documents are still printed on paper and their interaction is disconnected from the digital paper representation. Conductive ink allows to print documents with embedded electrical circuits. We developed several layouts to add interactive elements, such as tick boxes or signature fields, to paper documents. In this paper we propose several techniques to enhance classical paper documents by ...

Previously, we have put in a considerable amount of effort to separate, identify, and then classify pen gestures from any given ink trace on the digital board. Those heuristics have been proven sound and efficiently fast, but lags in coherence when it comes to administering seriously ambiguous cases when both the domains for sketches and gestures are merged. When earlier, we analysed data solel...

We present a prototype large-scale interactive electronic whiteboard wall. Various input, output and vision technologies are used to create a surface that can capture digital ink as well as support pen-based interaction with displayed information on subregions of the wall. A simple automated capture application is demonstrated on our prototype surface and research challenges for developing more...

Most existing techniques for regulating the ink flow in offset presses rely on density measurements carried out on specially printed patches. In the present contribution, we develop a methodology to deduce ink thickness variations from spectral measurements of multi-chromatic halftone patches located within the printed page. For this purpose, we extend the Clapper-Yule spectral reflectance pred...

Previous work (Gane, P.A.C. and Ridgway, C.J., Advances in Printing Science and Technology Volume 27, 2001) has shown that the absorption of the fluid phase from a waterbased flexographic ink is affected by the polymer content in the fluid phase, filtercake formation within the contacting ink layer and the distribution of dissolved polymer between the filtercake and the coating structure. The s...

Nowadays only digital figures are accepted by the most important journals of taxonomy. These may be produced by scanning conventional drawings, made with high precision technical ink-pens, which normally use capillary cartridge and various line widths. Digital drawing techniques that use vector graphics, have already been described in literature to support scientists in drawing figures and plat...