Virtual Pattern Piece Alignment for 2D Clothing Simulation
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Solution Overview
Problem
Simulating and accurately combining two-dimensional pattern pieces of clothing is challenging due to their flexible nature, making it difficult to determine precise alignment and length measurements, especially when patterns are altered, leading to inconvenience in setting new combination positions.
Innovation Solution
A method and apparatus that utilize a virtual pattern piece to guide the alignment of 2D pattern pieces by moving them to match outer lines, calculating normal vectors, and storing combination points for sewing, reducing computational complexity and increasing processing speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pattern pieces are used to simulate flexible clothing material, then the realism of 3D clothing simulation is improved, but the difficulty of determining accurate combination positions and measuring distances between pattern pieces increases
Solution Approach 1:
The patent introduces a guide pattern piece as an intermediary tool that facilitates the combination of flexible pattern pieces. The guide pattern piece includes reference lines and markers that serve as mediators to align and position the flexible pattern pieces accurately, solving the measurement difficulty while preserving the flexibility-based realism.
Solution Approach 2:
The patent creates a rigid copy or representation of the flexible pattern pieces in the form of guide patterns with fixed geometric features. This copying approach allows accurate measurement and positioning to be performed on the rigid guide, which then translates to the flexible pattern pieces, resolving the measurement difficulty without sacrificing the flexibility-based simulation quality.
2Adaptability or versatility
If pattern pieces are altered or changed after measurement, then design flexibility is improved, but the inconvenience of resetting combination positions and remeasuring increases
Solution Approach 1:
The patent establishes combination positions and reference markers on the guide pattern pieces before the actual pattern alteration takes place. These preliminary markings remain valid even when patterns are modified, eliminating the need to reset combination positions and reducing the time loss associated with redesign.
Solution Approach 2:
The guide pattern piece serves multiple functions: it provides reference lines for alignment, markers for combination positions, and a framework that remains applicable even when pattern designs are altered. This multi-functionality allows the same guide to be reused across different design iterations, reducing resetting time while maintaining design flexibility.
3Measurement precision
If virtual pattern pieces with texture are used for simulation, then the visual accuracy is improved, but the computational complexity and processing time increase
Solution Approach 1:
The patent segments the pattern representation into two parts: a simplified virtual pattern piece for computational operations and a detailed textured pattern piece for visual display. The simplified segment performs the heavy computational lifting for alignment and measurement, while the textured segment provides visual accuracy without contributing to computational complexity.
Solution Approach 2:
The patent introduces a virtual pattern piece as an intermediary that mediates between the computational requirements and visual requirements. This intermediary contains only the essential geometric information needed for calculations, while the full textured patterns are used only for display, thus reducing computational complexity while preserving visual accuracy.
Data Source
AI summary
A method and apparatus for providing a guide for combining pattern pieces receives a selection of a first point in a first pattern piece and a selection of a second point in a second pattern piece to be combined with the first pattern piece, generates a virtual pattern piece in response to the selection of the second point being received, arranges the virtual pattern piece such that a third point in the virtual pattern piece having a position corresponding to the first point in the first pattern piece is matched to the second point in the second pattern piece, and provides a guide for combining the first pattern piece and the second pattern piece by moving the virtual pattern piece such that an outer line of the second pattern piece and an outer line of the virtual pattern piece correspond to each other.