Trace Detection Coordinate Transformation for Workpiece Inspection
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Solution Overview
Problem
Existing methods fail to clearly distinguish between traces generated in the machining process and false detections in the inspection process of workpieces, affecting the accuracy of external appearance inspections.
Innovation Solution
An information processing method that calculates the position and size of trace features in both absolute and relative coordinate systems, determining whether the trace is genuine or a false detection based on predetermined value differences, and identifies the machining equipment responsible for the trace if it exceeds specific thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If trace detection is performed in the inspection process, then the capability to identify surface defects is improved, but the ability to distinguish genuine traces from false detections deteriorates
Solution Approach 1:
The patent introduces coordinate system transformation as an intermediary mechanism to bridge the inspection image space and the workpiece reference space. By transforming detected feature positions into the workpiece coordinate system and comparing with machining position data, the system mediates between raw detection data and meaningful trace identification, enabling reliable distinction between genuine traces and false detections.
Solution Approach 2:
The patent replaces manual or simple visual trace verification with automated image processing and coordinate transformation algorithms. The mechanical/manual inspection process is substituted with computational methods that automatically calculate position distributions in different coordinate systems and apply decision logic to distinguish genuine traces from false detections.
2Measurement precision
If multiple coordinate systems are used to analyze trace positions, then the accuracy of trace identification is improved, but the complexity of the detection process increases
Solution Approach 1:
The patent adds a computational dimension by introducing coordinate system transformation as an additional processing layer. Instead of analyzing positions in a single coordinate system, the method transforms positions between inspection coordinate system and workpiece coordinate system, adding a dimensional transformation step that enables accurate trace identification while managing complexity through systematic coordinate mapping.
Solution Approach 2:
The coordinate transformation module serves multiple functions: it converts inspection image coordinates to workpiece coordinates, enables comparison with machining position data, and provides the basis for calculating position distributions. This multi-functional approach reduces overall system complexity by using a single transformation mechanism for multiple analytical purposes.
Data Source
AI summary
An information processing method calculates a position of a feature corresponding to a trace in a first coordinate system, calculates a position of the feature corresponding to the trace in a second coordinate system, and calculates a size of a first distribution of the position of the feature corresponding to the trace in the first coordinate system and a size of a second distribution of the position of the feature corresponding to the trace in the second coordinate system. Additionally, the information processing method outputs information indicating that the feature corresponding to the trace is the trace formed on the surface of the workpiece in the machining process, and outputs information indicating that the feature corresponding to the trace is a false detection of the trace in the inspection process.