Automated inspection of Printed Circuit Boards(PCB's) is essential if 100% repeatible inspection is to be carried out. The cost of most commercially available systems for automatic visual inspection of PCB's are beyond the reach of many small to medium manufacturers. The principle objectives of our research is to develop and integrate a micro-computer based image analysis system specifically fo...

This paper deals with the automatic detection of defects within various welding. The authors propose a method based on taking an X-ray image of the welding and then applying various image processing algorithms for the detection of possible defects. This method has a significant improvement in the detection success ratio compared to classical detection techniques (by using human operators). Key-...

15. Supplementary Notes Project performed in cooperation with the Texas Department of Transportation and the Federal Highway Administration. Project Title: Implementation of Automated Pavement Distress Rating Systems 16. Abstract This paper presents the image-processing algorithm customized for high-speed, real-time inspection of pavement cracking. In the algorithm, a pavement image is divided ...

This project centers on developing analytic and computational mechanisms for detecting part defects in spite of imaging noise and allowed part-to-part variation. The analytic space for expressing and detecting part defects, as well as statistical models for dealing with noise and variation, are both of high interest, and solutions that couple these two areas are desired. While a large body of g...

This paper describes an Automated Visual Inspection System SIVATUN" for quality control of Tuna Meat which automate manual inspection operation. Depending on whether tuna are reared in cages or in the open sea and depending on the method of capture (electroslaughtering, shooting, etc.), differences are observed and changes take place in the organic nature of Blue Fin Tuna (Thunnus Thynnus) meat...

The visual inspection system was developed for defects detection on leather surfaces, which is an important component of automatic CAD/CAM cutting systems. The main functions of the system are quality control and raw material cutting. An efficient algorithm, which combines multiresolution approach, energy and entropy matrices, is presented for detection of defects embedded in leather surface im...

This paper describes the basic actions proposed for quality inspection. These actions involve structuring a Decision Supporting Expert System (DSES) to help with those decisions related to the preliminary activities for inspection development—most of them relating to determining of the need or convenience of carrying out the inspection itself. Once the opportunity to carry it out is defined, th...

With today’s technology embracing ever-smaller chip components, array packages with hidden solder joints, and numerous components on both sides of the printed circuit board assembly (PCBA), manual visual inspection is running out of steam to adequately address these challenges. AOI (automatic optical inspection) and/or AXI (automatic X-ray inspection) are starting to be used at a majority of to...

Measurement and analysis of cracks on the surface of reinforced concrete can be an effective key for diagnosing quake-proofness of a construction or measuring material fatigue. The conventional method of diagnosis is to analyze cracks using a sketch manually produced by inspection engineers, however it takes a fairly long time and lacks quantitative objectivity. This paper proposes an automatic...