Handy-Potter: Rapid 3D Shape Exploration Through Natural Hand Motions

Abstract

We present the paradigm of natural and exploratory shape modeling by introducing novel 3D interactions for creating, modifying and manipulating 3D shapes using arms and hands. Though current design tools provide complex modeling functionalities, they remain non-intuitive and require significant training since they segregate 3D shapes into hierarchical 2D inputs, thus binding the user to stringent procedural steps and making modifications cumbersome. In addition the designer knows what to design when they go to CAD systems and the creative exploration in design is lost. We present a shape creation paradigm as an exploration of creative imagination and externalization of shapes, particularly in the early phases of design. We integrate the capability of humans to express 3D shapes via hand-arm motions with traditional sweep surface representation to demonstrate rapid exploration of a rich variety of fairly complex 3D shapes. We track the skeleton of users using the depth data provided by lowcost depth sensing camera (Kinect TM ). Our modeling tool is configurable to provide a variety of implicit constraints for shape symmetry and resolution based on the position, orientation and * Address all correspondence to this author. speed of the arms. Intuitive strategies for coarse and fine shape modifications are also proposed. We conclusively demonstrate the creation of a wide variety of product concepts and show an average modeling time of a only few seconds while retaining the intuitiveness of communicating the design intent.

An Object Model and Interaction Method for a Simulated Experience of Pottery on a Potter’s Wheel

“…Cho et al [9] adopted an actual spinning wheel as an additional hardware device to present augmented reality to some extent. Krishnamurthy et al developed "Handy-Potter" [10] and "Shape-It-Up" [11] to propose an idea of shape-gesture-context interplay (SGCI) for natural 3D shape modeling by hand gestures as a natural user interface (NUI) also using a Kinect sensor. Imai et al [12] developed a cylindrical input device covered with resistive touch sensor sheets to output instructions by means of 3D molding gesture with hands.…”

Gesture-based system for next generation natural and intuitive interfaces

“…Identifying gesture through depth data is an active area of research. It provides fast and efficient recognition and thus allows for natural and intuitive interaction (Suryanarayan et al, 2010; Vinayak et al, 2012). The gesture has been utilized as a primary modality of interaction in the outlined research.…”

The MechProcessor: Helping Novices Design Printable Mechanisms Across Different Printers

“…Prior approaches cluster into either translating user input into planar mechanism constraints or generating new geometry using a model library. Researchers in mechanical engineering have also explored techniques for simplifying CAD interfaces, including sketch-based CAD [30,31] and gesture-based CAD [32], and through design repositories [33] and model-based synthesis (e.g., the adaptive vehicle make program [34]).…”