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System and method for constrained manipulations of 3d objects by multitouch inputs

A three-dimensional object, multi-touch technology, applied in the input/output process of data processing, image data processing, instruments, etc., can solve problems such as difficult operation

Inactive Publication Date: 2014-06-25
THE HONG KONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the small controls and large set of mode switching buttons used in standard interfaces are difficult to operate on multi-touch input devices due to the "fat finger" problem of touch devices, that is, the fingertip contact area is larger than the input resolution.

Method used

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  • System and method for constrained manipulations of 3d objects by multitouch inputs
  • System and method for constrained manipulations of 3d objects by multitouch inputs

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Embodiment Construction

[0023] In the following description, numerous specific details are set forth in order to provide a thorough understanding of various embodiments. One skilled in the relevant art will recognize, however, that the techniques described herein may be practiced without one or more of these specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring certain aspects of the disclosed subject matter.

[0024] This paper describes a 3D modeling scheme that provides rich, intuitive control over the constrained manipulation of 3D objects in 3D space and requires no input from widgets, buttons, etc. With this modeling scheme, users are able to manipulate three-dimensional objects by performing simple gesture inputs to multi-touch input devices of any size. Multi-touch input devices, such as touch screens, touch pads, and the like, are widely used in digital ...

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Abstract

Described herein are systems and methods that employ a widgetless and buttonless multi-touch interface for constrained manipulations of 3D objects. The widget-less multi-touch user interface can map different multi-touch gestures to different 3D object manipulation tasks, allowing a user to manipulate 3D objects without operating widgets or performing mode switchings or tool selections. User interaction is greatly simplified by using single touch actions that simultaneously specify the transformation constraint, the transformation type, and the magnitude of transformation and apply the transformation to the focus object. Additionally, the axis-based constrained manipulations support active snapping and axis transfer. Active snapping allows the user to draw a free touch path connecting two 3D objects to be snapped together, avoiding tedious operations required with standard transformation manipulations. Axis transfer provides a simple solution to achieve relative transformations between objects, allowing an object to be transformed along a specific predefined axis of another object.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 552,413, filed October 27, 2011, entitled "Multi-Touch Interfaces for 3D Object Manipulation," which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates generally to the manipulation of three-dimensional (3D) objects, and in particular to a multi-touch input device capable of facilitating the task of manipulating three-dimensional objects based on touch gestures. Background technique [0004] 3D modeling is an important tool in industries such as engineering, design, and entertainment. With 3D modeling, users can create, place, scale and orient 3D objects in virtual space. Existing 3D modeling solutions are generally limited to flat-panel displays and single-point 2D input devices (such as mouse, stylus, etc.). Because of these limitations, 3D modeling packages are often difficult to u...

Claims

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Application Information

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IPC IPC(8): G06F3/0484G06F3/0488
CPCG06T2219/2016G06F3/04815G06F3/04883G06F3/04842G06F3/04845G06F3/048G06F3/0488G06F3/04817G06T2219/2004G06T19/20G06F2203/04808
Inventor 戴秋兰区建忠傅红波
Owner THE HONG KONG UNIV OF SCI & TECH
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