Digital Stereo Drawing System for Stereoscopic Artwork Creation
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Solution Overview
Problem
Creating stereoscopic artwork is challenging due to the need for stereo-consistent disparity information and the complexity of mechanical drawing devices, while digital methods require time-consuming three-dimensional model creation or difficult depth image drawing.
Innovation Solution
A digital stereo drawing system that allows users to create stereoscopic artworks by interacting with three-dimensional shapes displayed on a user interface, using input devices like touch-sensitive tablets or motion tracking devices, to draw onto well-defined 3D surfaces, which automatically generate stereoscopic image pairs with depth information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical drawing devices are used to facilitate stereo sketching, then ease of operation is improved, but device complexity increases and ease of manufacture deteriorates
Solution Approach 1:
The patent replaces complex mechanical drawing devices with a digital system that uses a standard display device and input device. The computer receives input from the input device and generates stereoscopic image pairs through software processing, eliminating the need for specialized mechanical apparatus while maintaining ease of operation.
Solution Approach 2:
The system creates a virtual copy of the drawing surface in three-dimensional space through software. Instead of requiring physical 3D positioning devices, the patent maps input device movements to a virtual 3D environment, allowing users to draw on virtual surfaces that provide depth information automatically.
2Device complexity
If digital drawing techniques paint depth onto a 2D canvas, then device complexity is reduced, but manufacturing precision deteriorates due to difficulty in drawing appropriate depth images
Solution Approach 1:
The patent transitions from 2D canvas drawing to 3D virtual surface drawing. The computer generates stereoscopic image pairs by projecting the user's 2D input onto virtual 3D surfaces, automatically calculating depth information and disparity values. This eliminates the need for users to manually create depth maps while preserving accurate depth representation.
Solution Approach 2:
The system automatically generates depth information and stereoscopic image pairs from the user's drawing input. The computer calculates disparity values and creates the second view image automatically based on the virtual 3D surface geometry, eliminating the need for manual depth map creation and ensuring precision through algorithmic computation.
3Manufacturing precision
If users draw directly on a three-dimensional model, then manufacturing precision of depth information is improved, but loss of time increases due to time-consuming model creation
Solution Approach 1:
The system pre-generates a library of virtual 3D surfaces with known geometric properties before the user begins drawing. These virtual surfaces are stored in the computer's memory, allowing users to select and draw on them immediately without spending time creating 3D models. The surfaces are prepared in advance with their depth and normal information already computed.
Solution Approach 2:
The patent allows users to modify parameters of virtual 3D surfaces (such as scale, orientation, and geometric characteristics) without recreating the models. The computer adjusts the virtual surface parameters based on user input and automatically updates the stereoscopic image generation, maintaining precision while reducing time investment compared to creating new 3D models.
4Ease of operation
If mechanical drawing devices are used, then ease of operation for stereo sketching is improved, but ease of manufacture deteriorates due to difficulty in building and operating devices
Solution Approach 1:
The patent replaces specialized mechanical drawing devices with standard digital input devices (such as mice, touchscreens, or tablets) that are already manufactured and widely available. The computer software handles the stereoscopic image generation, eliminating the need to manufacture complex mechanical apparatus while maintaining ease of operation through familiar digital interfaces.
Data Source
AI summary
Methods, apparatus, and computer-readable storage media for stereo drawing that enable the creation of stereoscopic image pairs. A stereo drawing system may present 3D shape(s) via a user interface (UI). The user can position and rotate a 3D shape, for example via direct manipulation technology such as motion tracking technology. A drawing surface may be mapped to an input device via which input strokes may be applied to the surface. The input strokes are mapped locally onto the surface, thereby allowing the user to draw onto a well-defined shape in 3D space. The stereo drawing system maps what is drawn onto the drawing surface; the geometry of the drawing surface provides depth information so that stereoscopic image pairs can be automatically generated.