The improvement of image quality has a close relation with lighting and lens in an automatic inspection system. The quality of image could affect the cost, speed and stability of an inspection system. The influences of the lighting configuration and the spherical aberration of lens in an automatic inspection system are studied by means of Monte Carlo (MC) method in this paper. The theoretical a...

T oday’s printed circuit board (PCB) assembly test engineers face significantly more test challenges than just a few years ago. Board complexity is dramatically increasing with more components, more joints, higher densities and new package technologies. The higher component and joint counts create more defect opportunities, which lead to lower yields for a given defect level. Fortunately, test ...

Aerial photogrammetry is one of the main methods obtaining geospatial information. After entering the 21st century, aerial photogrammetry technology has fully entered the digital age, and the quality of digital aerial photography results will directly affect the quality and accuracy of results of surveying and mapping .Therefore, it is necessary to inspect the quality of digital aerial photogra...

In the forest products manufacturing industry, recent price increases in the cost of high-quality lumber together with the reduced availability of this resource have forced manufacturers to utilize lower grade hardwood lumber in their manufacturing operations. This use of low quality lumber means that the labor involved in converting this lumber to usable parts is also increased because it take...

We present a novel online inspection method for manufacturing processes that automatically adapts to variations in part and environmental properties. This method is based on a developmental learning architecture comprising a procedure that focuses attention to apparently defective regions, a recognition method that performs automatic feature derivation based on a set of training images and hier...

Techniques for automatic monitoring of faults in machinery are being considered as a means to safely simplify or dispense with expensive periodic fault inspection procedures. This paper presents results from an ongoing investigation into the feasibility of using Acoustic Emissions (AEs) for automatic detection of microcrack formation/growth in machine components.

The quality aspects of spatial data are very important in the decision-making process. However, the quality inspection of spatial data is still dependent on manual checking, and there is an urgent need to develop an automatic or semi-automatic generic system for spatial data quality inspection. In this paper, we present a general framework that automatically copes with spatial data quality insp...

The objective of the work consists in the design and implementation of techniques of automatic recognition of weld regions. It is aimed to complete a system of automatic inspection of radiographic images of welded joints. It deals with the problem of the delimitation of the weld regions according to the general scheme of image interpretation systems based on knowledge.

In this paper, we describe how formal speci…cation is adopted to improve the commonly used veri…cation and validation technique known as program inspection, in order to establish a more rigorous, repeatable, and e¢ cient inspection process than the conventional practice. We present a systematic approach to inspecting program code on the basis of the relation between functional scenarios de…ned ...

Since the visual appearance of food and other biological products is a major factor in the judgment of quality, visual inspection is an important part of quality control in these industries. This inspection has historically been performed by use of the only “tool” available, the human eye. The processaccompanying data acquisition, automatic evaluation and direct control of the ambient condition...