MathBrush: A System for Doing Math on Pen-Based Devices

Labahn, George; Lank, Edward; MacLean, Scott; Marzouk, Mirette; Tausky, David

doi:10.1109/das.2008.21

Cited by 28 publications

(9 citation statements)

References 8 publications

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“…In 2002, the FFES/DRACULAE pen-based equation editor 2 [135,165] was distributed as an open-source prototype. Several more recent systems recognize handwritten [81,133,144] and typeset [46] expressions. Commercial applications began to appear, including MathJournal 3 , and pen-based entry in the Windows operating system [113].…”

Section: Mathematical Content Interpretation (Section 44)mentioning

confidence: 99%

“…optimizing recognition model parameters) -all come into play when recognizing mathematics. The math domain 2 (a) Freehand Formula Entry System (b) XPRESS [116] (c) InftyEditor/InftyReader [141] (FFES) [20,136] (a) MathBrush [81] (b) E-chalk [144] (c) MathPad 2 [85] (d) Li, Zeleznik et al [89] offers sufficient complexity to challenge researchers, yet has characteristics that make the domain tractable: the semantics of math notation are fairly constrained, and a typical math expression consists of relatively few symbols.…”

Section: Introductionmentioning

confidence: 99%

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Recognition and retrieval of mathematical expressions

Zanibbi

Blostein

2011

IJDAR

234

112

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Document recognition and retrieval technologies complement one another, providing improved access to increasingly large document collections. While recognition and retrieval of textual information is fairly mature, with wide-spread availability of Optical Character Recognition (OCR) and text-based search engines, recognition and retrieval of graphics such as images, figures, tables, diagrams, and mathematical expressions are in comparatively early stages of research. This paper surveys the state of the art in recognition and retrieval of mathematical expressions, organized around four key problems in math retrieval (query construction, normalization, indexing, and relevance feedback), and four key problems in math recognition (detecting expressions, detecting and classifying symbols, analyzing symbol layout, and constructing a representation of meaning). Of special interest is the machine learning problem of jointly optimizing the component algorithms in a math recognition system, and developing effective indexing, retrieval and relevance feedback algorithms for math retrieval. Another important open problem is developing user interfaces that seamlessly integrate recognition and retrieval. Activity in these important research areas is increasing, in part because math notation provides an excellent domain for studying problems common to many document and graphics recognition and retrieval applications, and also because mature applications will likely provide substantial benefits for education, research, and mathematical literacy.

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Section: Mathematical Content Interpretation (Section 44)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recognition and retrieval of mathematical expressions

Zanibbi

Blostein

2011

IJDAR

234

112

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“…The concept of mathematical sketching was first developed in the seminal work of MathPad 2 [17]. Another example is MathBrush [16], which allows the handwritten input and recognition of mathematical expressions. It allows the use of gestures to manipulate expressions and is able to evaluate them by passing them to a computer algebra system.…”

Section: Related Workmentioning

confidence: 99%

Structure Editing of Handwritten Mathematics

Mendes

Backhouse

Ferreira

2014

Proceedings of the Ninth ACM International Conference on Interactive Tabletops and Surfaces

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We present a structure editor that aims to facilitate the presentation and manipulation of handwritten mathematical expressions. The editor is oriented to the calculational mathematics involved in algorithmic problem solving and it provides features that allow reliable structure manipulation of mathematical formulae, as well as flexible and interactive presentations. We describe some of its most important features, including the use of gestures to manipulate algebraic formulae, the structured selection of expressions, definition and redefinition of operators in runtime, gesture's editor, and handwritten templates. The editor is made available in the form of a C# class library which can be easily used to extend existing tools. For example, we have extended Classroom Presenter, a tool for ink-based teaching presentations and classroom interaction. We have tested and evaluated the editor with target users. The results obtained seem to indicate that the software is usable, suitable for its purpose and a valuable contribution to teaching and learning algorithmic problem solving.

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“…The students develop answers to the problems guided by tips and hints provided by the software. Labahn et al (2008) propose MathBrush, a tool that allows users to draw math input using a pen-input device on a tablet computer, recognizes the math expression, and then supports mathematical transformation and problem solving. The authors argue that entering mathematics on a computer is problematic, it is more natural write the formulae than inputting the latex form, maple form or mathematic form.…”

Section: Literature Reviewmentioning

confidence: 99%

InkBlog: A Pen-Based Blog Tool for e-Learning Environments

Silva¹,

Rocha

2013

IISIT

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Weblogs are communication and collaborative tools disposed in Web that aims to publish texts and sharing opinions, typically displaying the post in reverse chronological order, and allowing visitors to leave comments. Since devices equipped with pen are becoming common, such as tablets, and have enough computational power to render Web pages, users can access blog tools through pen-based devices, writing new posts and read and comment published posts. But tablets have a different input style and the user need to type the post instead of handwriting it, decreasing the usability and make boring the writing task in these devices. Pen-based computing refers to a computer user-interface using a pen, rather than devices such as a keyboard or a mouse, and is a promise research area to enhance Education, but it is need to properly consider the pen. We purpose the InkBlog, a blog tool that receive input data from pen so that the user can handwriting her posts. In this work we present the InkBlog architecture and the main component, the InkEditor for Web pages. Using InkBlog the user can write equations or sketches faster than using a mouse or a keyboard, getting the best of the pen-based devices.

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MathBrush: A System for Doing Math on Pen-Based Devices

Cited by 28 publications

References 8 publications

Recognition and retrieval of mathematical expressions

Recognition and retrieval of mathematical expressions

Structure Editing of Handwritten Mathematics

InkBlog: A Pen-Based Blog Tool for e-Learning Environments

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