Image Processing Apparatus for Surface State Evaluation
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Solution Overview
Problem
Existing methods for evaluating the state of an object surface, such as those using camera photography and illumination light projection, face challenges in accuracy due to fluctuations in the relative position of the object with respect to the light source and camera, leading to inconsistent evaluation values, especially in conveyor line settings where object dimensions and positions vary.
Innovation Solution
An image processing system that projects multiple slit light beams with different line widths onto an object surface, captures these images, and selects a projection image based on object-specific information to calculate an evaluation value, thereby stabilizing the evaluation process by adjusting for variations in distance and luminance distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If camera photographing is used to evaluate object surface state, then the evaluation process can be implemented, but the evaluation value fluctuates depending on the relative position of the object with the illumination light source and the camera
Solution Approach 1:
The patent changes the parameter of line width by projecting multiple linear images with different line widths onto the object surface. By selecting the linear image with the appropriate line width based on object information, the system compensates for position variations and achieves consistent evaluation values across different measurement conditions.
2Measurement precision
If multiple linear images with different line widths are projected onto the object surface, then the evaluation accuracy can be improved by selecting the appropriate linear image, but the device complexity increases
Solution Approach 1:
The patent segments the illumination into multiple linear images with different line widths, allowing the system to process and select the most appropriate image segment for evaluation. This segmentation enables accurate surface state measurement while managing system complexity through structured organization of the linear images.
Solution Approach 2:
The system dynamically selects which linear image to use based on object information such as object type and paint color. This dynamic selection mechanism allows the system to adapt to different measurement scenarios without requiring complex hardware modifications, thereby improving accuracy while controlling device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for accurate evaluation of the object surface state by selecting the appropriate projection image based on object type and paint color, ensuring consistent evaluation values despite changes in object position and illumination, thus enhancing the reliability of surface state assessments.
Implementation Method 1
an illumination light source that projects a plurality of linear images with different line widths onto a surface of an object
Implementation Method 2
an imaging device that captures an image of the object, in which the plurality of linear images are projected, to obtain image data
Data Source
AI summary
An image processing apparatus acquires an image obtained by capturing a plurality of linear images with different line widths generated on a surface of an object, selects a linear image from among the plurality of linear images in the image, and evaluates a state of the surface of the object based on the selected linear image.