PhysicsBook: a sketch-based interface for animating physics diagrams
PhysicsBook: a sketch-based interface for animating physics diagrams
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PhysicsBook：基于草图的界面，用于动画物理图
DOI：
10.1145/2166966.2166977
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Laviola
中科院分区：
文献类型：
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作者：
Salman Cheema;J. Laviola
我们提出的PhysicsBook，一个原型系统，使用户能够解决物理问题，使用基于草图的界面，然后动画的任何图表中使用的解决问题，以表明解决方案是正确的。PhysicsBook识别解决方案中的图表，并通过识别数学和注释（如箭头和虚线）来推断图表组件之间的关系。对于动画，PhysicsBook使用定制的物理引擎，为手写数学和图表提供入口点。我们讨论了PhysicsBook的设计，包括草图识别算法的细节，用户意图的推理和基于用户编写的数学创建动画。具体来说，我们描述了物理引擎如何使用领域知识来执行数据转换的情况下，它不能直接使用一个给定的方程。这使得PhysicsBook能够处理与经典力学没有直接关系的问题。我们提供的例子的场景如何PhysicsBook可以用作智能辅导系统的一部分，并讨论我们目前的原型的优点和缺点。最后，我们介绍了五名参与者的初步可用性研究的结果。
We present PhysicsBook, a prototype system that enables users to solve physics problems using a sketch-based interface and then animates any diagram used in solving the problem to show that the solution is correct. PhysicsBook recognizes the diagrams in the solution and infers relationships among diagram components through the recognition of mathematics and annotations such as arrows and dotted lines. For animation, PhysicsBook uses a customized physics engine that provides entry points for hand-written mathematics and diagrams. We discuss the design of PhysicsBook, including details of algorithms for sketch recognition, inference of user intent and creation of animations based on the mathematics written by a user. Specifically, we describe how the physics engine uses domain knowledge to perform data transformations in instances where it cannot use a given equation directly. This enables PhysicsBook to deal with domains of problems that are not directly related to classical mechanics. We provide examples of scenarios of how PhysicsBook could be used as part of an intelligent tutoring system and discuss the strengths and weaknesses of our current prototype. Lastly, we present the findings of a preliminary usability study with five participants.