Real-time curvature defect detection on outer surfaces using best-fit polynomial interpolation
Ehsan Golkar1, Anton Satria Prabuwono, Ahmed Patel
1Center for Artificial Intelligence Technology (CAIT), Faculty of Information Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 UKM Bangi, Selangor, Malaysia. egolkar@ftsm.ukm.my
Sensors (Basel, Switzerland)
|December 4, 2012
Summary
This study introduces a new real-time defect detection system using best-fit polynomial interpolation for surface inspection. The method effectively identifies various surface defects like waviness, curvature, and blobs on pipes and tiles.
Area of Science:
- Materials Science
- Surface Metrology
- Computer Vision
Background:
- Surface inspection is critical for quality control in manufacturing.
- Existing methods may lack real-time capabilities or struggle with diverse defect types.
- Automated defect detection enhances efficiency and accuracy.
Purpose of the Study:
- To develop and validate a novel, real-time defect detection system for outer surfaces.
- To employ best-fit polynomial interpolation for enhanced feature extraction.
- To accurately identify flatness, waviness, blob, and curvature faults.
Main Methods:
- Implementation of a real-time defect detection system.
- Utilizing best-fit polynomial interpolation for feature extraction.
- Testing and validation on physical samples, including pipes and ceramic tiles.
Main Results:
- The system successfully recognizes physical defects, such as abnormal popped-up blobs.
- Flames, waviness, and curvature faults are detected simultaneously and accurately.
- The method demonstrates effectiveness in real-time surface condition inspection.
Conclusions:
- The proposed best-fit polynomial interpolation method offers a robust solution for real-time surface defect detection.
- This system enhances the capability to identify multiple surface defects concurrently.
- The validated results confirm the system's applicability in industrial quality control settings.
Related Concept Videos
01:19Degree of Curvature and Radius of Curvature
The degree of curvature and the radius of curvature are fundamental concepts in determining the sharpness or smoothness of a curve. The degree of curvature is a measure of how steeply a curve bends and can be determined using the chord basis or the arc basis. In the chord basis method, the degree of curvature is defined as the central angle subtended by a chord of 30.48 meters, helping in the calculation of the radius of the curve. The arc basis method defines the degree of curvature as the...
01:23Curvilinear Motion: Rectangular Components
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the time...
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the time...
01:14Bending of Curved Members - Strain Analysis
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member is the...
The important part of bending analysis for such a member is the...
01:18Deformations in a Symmetric Member in Bending
When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
01:27Curvilinear Motion: Normal and Tangential Components
When a car traverses a curved road, its motion can be elucidated by breaking it down into tangential and normal components. The car-centric coordinates attached to the vehicle move with it.
The positive direction of the t-axis aligns with the increasing position of the car along the curved path, denoted by the unit vector ut. Simultaneously, the n-axis, perpendicular to the t-axis, dissects the curved path into differential arc segments, each forming the arc of a circle with a radius of...
The positive direction of the t-axis aligns with the increasing position of the car along the curved path, denoted by the unit vector ut. Simultaneously, the n-axis, perpendicular to the t-axis, dissects the curved path into differential arc segments, each forming the arc of a circle with a radius of...
01:16Bending of Curved Members - Neutral Surface
In curved beams, unlike straight beams, the stress distribution across the cross-section is not uniform due to the beam's curvature. This non-uniformity arises because the neutral axis, where stress is zero, does not align with the centroid of the section. In a curved beam, the strain varies along the section as a function of the distance from the neutral axis.
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...