Image-Based Object Inspection Without Sharing 3D Models
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Solution Overview
Problem
Existing inspection methods require access to a 3D model of the object, which may contain proprietary information and are time-consuming due to manual overlaying and matching with 3D models.
Innovation Solution
A method for inspecting an object using guide image data and inspection image data without relying on a 3D model, allowing for the determination of object properties based on guide image pixel arrays and user inputs, enabling comparison and tracking of features like cracks or chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a 3D model is used for inspection, then measurement precision is improved, but loss of time increases due to manual overlaying and matching processes
Solution Approach 1:
The system performs preliminary actions by pre-processing the 3D model to generate a guide image with pixel array and properties map before the actual inspection occurs. This preparation work includes creating the guide image pixel array, determining pixel properties, and establishing the reference framework in advance, so that during inspection, only simple image matching and property comparison are needed, dramatically reducing inspection time while maintaining precision
Solution Approach 2:
The patent creates a guide image that is a simplified 2D representation or copy of the 3D model, containing essential geometric features and pixel properties. This guide image serves as a reference copy that can be quickly compared against inspection images without requiring full 3D model processing, thus maintaining measurement precision while reducing time consumption
2Measurement precision
If a 3D model is used for inspection, then measurement precision is improved, but loss of information increases due to proprietary 3D model information requirements
Solution Approach 1:
The system extracts only the essential visual features and geometric properties from the 3D model to create the guide image, separating the necessary inspection data from proprietary information. The guide image contains pixel array, coordinates, and properties map sufficient for accurate measurement, while excluding sensitive design details, material specifications, or other confidential 3D model information
Solution Approach 2:
The guide image acts as an intermediary between the proprietary 3D model and the inspection process. It serves as a reference that enables precise measurements without requiring direct access to or sharing of the original 3D model, thus protecting proprietary information while maintaining inspection accuracy
3Measurement precision
If manual overlaying and matching with 3D models is performed, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces the manual mechanical process of overlaying and matching inspection images with 3D models using automated image processing and computer vision algorithms. The system automatically compares inspection images against the guide image, detects features, and determines properties through computational methods, eliminating complex manual operations while maintaining or improving measurement precision
Data Source
AI summary
A method for inspecting an object includes receiving or determining inspection image data, the inspection image data including an inspection image pixel array with at least one inspection image pixel in the inspection image pixel array having a pixel property associated therewith. The method includes receiving via a processor a user input associated with a continuous segment of inspection image pixels in the inspection image pixel array. The method includes determining a property of the object based on the pixel properties associated with the continuous segment of inspection image pixels in the inspection image pixel array.