Many Mixed Reality applications rely on drawing virtual imagery directly on top of physical objects in a video scene. Registration accuracy is a serious problem in these cases since any imprecisions are immediately apparent as virtual and physical edges and features coincide. We present a hardware-accelerated image-based post-processing technique that adjusts rendering of virtual geometry to be...

ion: To allow easy creation of visual objects containing code to draw themselves, we should provide a higher-level drawing mechanism than the AWT‟s screen-coordinate system. Objects should be concerned only with drawing themselves in virtual space; whilst the Display should allow the user to navigate this virtual space by zooming, translating and rotating his view. The plan is to first build th...

An apprenticeship metaphor is described for programming by example, graphically, which enables untrained end users to add composite operations to a drawing program using constructive methods traditionally employed in drafting. To combat the extraneous activity that plagues naturally-produced traces, interaction is used to constrain induction by suppressing, or at least controlling, variability ...

Polynomial parametric curves are powerful and popular modeling tools in Computer Graphics and Computer Aided Design. There are two requirements that are placed on techniques for displaying these curves. In interactive applications, such as drawing and design, the need is for a fast display. In non interactive applications, such as typeset ting, the need is for accuracy (or at least the appearan...

A simple modification of Horn's circle drawing procedure yields a disk generator for a class of graphic devices capable of drawing rectangular areas. Another variation produces a disk a scan-line at a time allowing it to be drawn at the refresh rate of the display. The calculations involve only additions and binary shifts. Disciplines Computer Engineering | Computer Sciences Comments University...

iCanDraw is a drawing tool that can assist novice users to draw. The goal behind the system is to enable the users to perceive objects beyond what they know and improve their spatial cognitive skills. One of the early tasks in a beginner art class is to accurately reproduce an image, in an attempt to teach users to draw what they see, rather then what they know, improving spatial cognition skil...

We present a novel approach to creating structured diagrams (such as flow charts or object diagrams) by combining an off-line sketch recognition system with the user interface of a traditional structured graphics editor. Our system, called UDSI (user-directed sketch interpretation), aims to provide drawing freedom by allowing the user to sketch entirely off-line using a pure pen-and-paper inter...

A fast algorithm(fade) for the 2D drawing, geometric clustering and multilevel viewing of large undirected graphs is presented. The algorithm is an extension of the Barnes-Hut hierarchical space decomposition method, which includes edges and multilevel visual abstraction. Compared to the original force directed algorithm, the time overhead is O(e + n logn) where n and e are the numbers of nodes...

A wide variety of drawing packages is available for architectural design. However, most of these systems are oriented to the production of final technical drawings, and only few support the early phase of design. Here we introduce a new approach for a design system to support the early phase of design. The method is based on a theory from architecture on the meaning of drawings in 2D architectu...