Reading: "The ModelCraft Framework: Capturing Freehand Annotations and Edits to Facilitate the 3D Model Design Process Using a Digital Pen"

Computer Graphics paper y

Abstract

  • Physical models are frequently created to demonstrate an idea in early design stages. In such cases, these models require to be easily annotated, but currently it's hard to do this in digital form once the model is created in the physical world. This paper addresses this problem by augmenting the surface of a model with a traceable pattern. It supports a wide range of operations on complex models, from editing a model to assembling multiple models, and offers physical tools to capture free-space input.

Contributions
ModelCraft

    • Integrates seamlessly with the current usage patterns among architects and mechanical designers
    • By capturing annotations and edits on physical 3D models, thier system streamlines the design process, simplifies documentation of the design history of a given project, and supports design education
  • Present in detail possible paths and challenges to be solved for the implementation of such a system using current 3D prototyping technology

Strength and Weakness

  • Annotations, edits, and assemblies instructions are naturally captured in the reference frame of the model, without the need to worry about scale or orientation. The approach that they took does not have a predefined working volume, and can easily scale in terms of the number of objects traced, number of pens used, and locations of usage.
  • Does not require a per-model calibration--very lightweight

Ideas for Extention

  • I think the CAD software Rhinocerous also uses a structured syntax based on a simple extendable command structure for the system command language. However, it also allows users to input gesture-based commands. I think each of them has its own strength, so I believe this system can also be benefited by adopting gesture-based commands.

Open Questions

  • "ILoveSketch" paper also focuses on the early phases of designing 3D models. How different is this paper from "ILoveSketch" paper in terms of the concept toward early phases desining. How can we combine these ideas to produce new concepts in early skecthing?