Beyond Fitts' law: models for trajectory-based HCI tasks
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Interactive segmentation with Intelligent Scissors
Graphical Models and Image Processing
Perceptually-supported image editing of text and graphics
Proceedings of the 16th annual ACM symposium on User interface software and technology
Stylus input and editing without prior selection of mode
Proceedings of the 16th annual ACM symposium on User interface software and technology
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Artificial Intelligence for Engineering Design, Analysis and Manufacturing
Biasing response in Fitts' Law tasks
CHI '06 Extended Abstracts on Human Factors in Computing Systems
Modeling human performance of pen stroke gestures
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Analyzing the kinematics of bivariate pointing
GI '08 Proceedings of graphics interface 2008
A pen-based tool for efficient labeling of 2D sketches
SBIM '07 Proceedings of the 4th Eurographics workshop on Sketch-based interfaces and modeling
Designing a sketch recognition front-end: user perception of interface elements
SBIM '07 Proceedings of the 4th Eurographics workshop on Sketch-based interfaces and modeling
Implicit geometric constraint detection in freehand sketches using relative shape histogram
SBIM '07 Proceedings of the 4th Eurographics workshop on Sketch-based interfaces and modeling
Handle Flags: efficient and flexible selections for inking applications
Proceedings of Graphics Interface 2009
Harpoon selection: efficient selections for ungrouped content on large pen-based surfaces
Proceedings of the 24th annual ACM symposium on User interface software and technology
Design and evaluation of a perceptual-based object group selection technique
BCS '10 Proceedings of the 24th BCS Interaction Specialist Group Conference
Lazy selection: a scribble-based tool for smart shape elements selection
ACM Transactions on Graphics (TOG) - Proceedings of ACM SIGGRAPH Asia 2012
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Computer Graphics Forum
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This paper describes on-going work in the analysis of motion dynamics in pen-based interaction. The overall goal is the creation of a model of user motion in pen gestures where constraint and curvature vary over the length of the path. In particular, speed/curvature models of motion are used to analyze pen trajectories and infer target constraints obeyed by a user performing selection gestures. We aim to use this information to calculate an effective local spatial selection tolerance associated with each gesture. This can be used to perform selection according to user intent instead of their literal stroke. Here, we describe our early analysis of constrained user selection gestures, and outline a prototype application that infers a tolerance for one type of selection gesture. The application selectively splits pen strokes based on an analysis of user motion.