Computer-Assisted Drawing Perspective Alignment

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Solution Overview

Problem

Computer-assisted drawing programs lack the ability to automatically adjust line segments to conform to a defined perspective, leading to inaccuracies in sketches, especially in multi-dimensional drawings where lines should recede into the distance.

Innovation Solution

A method and system where a computer-assisted drawing application determines the perspective based on user-defined or automatically detected points, adjusts line segments in real-time as the user draws, and allows for multiple layers of refinement, enabling precise alignment with the perspective while providing user control over the level of adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If automatic perspective adjustment is implemented, then manufacturing precision of line segments improves, but device complexity increases

Engineering Contradiction:

Improveline segment alignment accuracyVSAvoidsystem complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system automatically detects perspective points and adjusts line segments without requiring manual intervention. The computer vision algorithms self-correct the perspective distortion by identifying vanishing points and automatically transforming line segments to conform to the detected perspective, making the system self-sufficient in maintaining precision.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adjustment methods with automated computer vision and image processing algorithms. Instead of requiring users to manually calculate and adjust perspective lines, the system uses digital image transformation techniques to automatically correct line segments, substituting mechanical/manual operations with computational processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If real-time perspective adjustment is applied, then productivity improves, but use of energy increases

Engineering Contradiction:

Improvedrawing speedVSAvoidprocessing energy

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The system applies perspective adjustment selectively based on the detected conformance of line segments to the established perspective. Not all line segments require full adjustment - the system evaluates each segment and applies transformation only when necessary, performing partial actions rather than exhaustive processing on every element.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system performs preliminary detection of perspective points and establishes the perspective framework before processing individual line segments. By pre-establishing the perspective reference system through automatic detection of vanishing points and horizon lines, the system prepares the transformation parameters in advance, reducing computational load during real-time drawing.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9035953B1Systems and methods for computer-assisted drawings

Publication Date: 2015.05.19 ADOBE INC

AI summary

Systems and methods for computer-assisted drawing are disclosed. For example, one disclosed method includes the steps of determining a perspective based on at least one perspective point; receiving a sketch drawing input and generating a sketch line segment based on the drawing input; determining a conformance of the sketch line segment to the perspective; and responsive to determining the conformance exceeds a threshold: adjusting the sketch line segment based on the conformance, and displaying the adjusted sketch line segment.