Map Data Generation from Construction Design Drawings
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Solution Overview
Problem
Current map generation methods are prone to errors and delays due to the need for completed construction features before surveying or aerial photography can occur, leading to inaccuracies and timing issues in generating maps for infrastructure projects.
Innovation Solution
A method that uses construction designs, such as civil engineering drawings, to generate map data through optical character recognition, feature extraction, and probability-based processing, allowing for early map creation and subsequent verification with surveys or aerial photography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If map generation is performed based on surveys, aerial photography, or positioning data after construction completion, then the map data can be verified against actual features, but significant timing delays occur between construction completion and map generation
Solution Approach 1:
The patent applies preliminary action by extracting map data from construction design drawings before construction is completed. The system processes design drawings to extract feature information (roads, buildings, boundaries) and generates map data in advance, eliminating the waiting period for construction completion while maintaining accuracy through design-based extraction.
Solution Approach 2:
The patent uses copying by creating map data as a representation of the planned construction from design drawings. Instead of capturing actual constructed features, the system copies the intended design information into map format, allowing early map generation that reflects the planned infrastructure.
2Measurement precision
If map generation waits for construction completion before surveying or photography, then the map reflects actual constructed features, but the process becomes prone to errors and timing delays
Solution Approach 1:
The system performs preliminary extraction of map features from design drawings before construction occurs. By processing design data in advance, the system achieves both precision (from structured design information) and productivity (no waiting for construction completion or post-construction surveying).
Solution Approach 2:
The patent replaces the mechanical surveying and aerial photography processes with automated digital extraction from design drawings. This substitution eliminates the need for physical field work after construction, reducing both time consumption and potential human errors while maintaining high precision through systematic data extraction.
3Productivity
If construction designs are used to generate map data in advance, then timing delays are reduced and early mapping is enabled, but the map data must be verified against actual construction
Solution Approach 1:
The patent implements feedback by comparing extracted map features with actual construction data (aerial photography, surveys, or satellite imagery). The system identifies deviations between design-based map data and actual constructed features, allowing verification and correction to ensure accuracy while maintaining the productivity benefit of early map generation.
Solution Approach 2:
The system applies dynamics by making the map data adaptable and updateable. The initially generated map from design drawings can be dynamically adjusted based on feedback from actual construction verification, allowing the map to evolve from a preliminary design-based representation to an accurate as-built representation.
Data Source
AI summary
A method, apparatus and computer program product are provided for generating map data based on construction designs. In the context of a method, the method includes receiving a construction design, performing optical character recognition to detect characters within the construction design, extracting design features within the construction design, and generating map data based on the detected characters, and the extracted design features.