Appearance Inspection Device Parameter Optimization
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Solution Overview
Problem
Existing appearance inspection devices using imaging devices mounted on robot arms face challenges in quickly determining the optimum values of various imaging parameters, such as relative position, focal position, and illumination intensity, due to the vast combination of possible values, leading to inefficiencies in the inspection process.
Innovation Solution
An appearance inspection device that includes an imaging part, an illumination part, a moving mechanism to change relative positions, and an imaging processing part that takes multiple images under varying parameter conditions, with a parameter determining part to calculate and set the optimum values of imaging parameters based on the captured images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the optimum values of various imaging parameters are determined by user experience and intuition from an enormous combination of values, then the inspection can be performed with simple equipment, but it takes a long time to determine the optimum values
Solution Approach 1:
The system performs self-diagnosis and self-optimization by automatically evaluating imaging parameters through captured images. The determination unit calculates optimal values based on image quality metrics without requiring external expert intervention, enabling the system to serve itself in parameter optimization.
Solution Approach 2:
The patent replaces the mechanical/expert-based method of parameter determination with an automated computational system. Instead of relying on human experience and intuition, the system uses image processing algorithms and automatic evaluation to determine optimal imaging parameters, substituting human cognitive processes with mechanical computation.
2Measurement precision
If multiple types of imaging parameters are set variably to capture comprehensive images, then the determination of optimum values becomes more accurate, but the complexity of the imaging processing increases
Solution Approach 1:
The patent segments the imaging parameter optimization process into distinct functional units: capture units for different parameter types, an evaluation unit for assessing image quality, and a determination unit for calculating optimal values. This segmentation allows the system to handle multiple parameter types systematically without overwhelming complexity.
Solution Approach 2:
The determination unit serves multiple functions: it evaluates various imaging parameters (focal position, illumination intensity, relative position), processes different types of captured images, and determines optimal values for all parameters. This multi-functional design reduces overall system complexity by consolidating operations into a single versatile unit.
Data Source
AI summary
An appearance inspection device that can easily determine optimum values of various imaging parameters is provided. An appearance inspection device includes: a moving means which changes relative positions of at least two or more portions within a work-piece, an imaging part, and an illumination part; an imaging processing part which performs, in a state that the illumination part irradiates a light to the work-piece, a processing for changing imaging parameters and taking a plurality of images by the imaging part under a condition that plural types of imaging parameters with mutually different properties are variably set, the plural types of imaging parameters including a change of the relative position between the work-piece and the imaging part caused by the moving means; and a parameter determining part determining a set of optimum values of the plural types of imaging parameters that are set variably based on the plurality of taken images.