The fast inspection of technical processes gains increasing importance. Time resolved distance and shape measurements of the dynamic deformation of high speed rotating objects are challenging. The measurement rate of conventional distance sensors is limited, since their uncertainty strongly increases with the surface velocity of the inspected object. In contrast, the recently developed laser Do...

In this paper a prototype system is described for the management and content-based retrieval of defect images in huge image databases. This is a real problem in surface inspection applications, since modern inspection systems may produce up to thousands of defect images in a day. We are using a noncommercial, generic content-based image retrieval (CBIR) system called PicSOM that is modified to ...

High signal to noise ratio is important within non-destructive testing. To achieve automatic inspection, including automatic evaluation, it is even more important. Infrared thermography is a suitable method for automatic inspection. One drawback with thermography of metallic structures is that due to shiny surfaces the reflectance is high and the signal to noise ratio will be low. This paper pr...

1 Abstract We describe the design and control of ROBIN a ROBotic INspector. ROBIN is a structure-climbing robot designed for man-made environments. It is intended to carry cameras and other sensors onto man-made structures such as bridges, buildings, aircraft and ships for inspection. The robot has two vacuum xtures connected by a 4 degree-of-freedom articulated mechanism that together allow it...

In ULSI fabrication, the design rule scaled up to 0.25um and the complex multiple layer structure prevent from applying the traditional optical microscope of which resolution is about 0.4um. Considering the situation, we have developed a ULSI inspection system based on the scanning parallel confocal microscope. In this paper, we present the feature of the computer aided parallel scanning confoc...

In this paper we address automated visual inspection of tablets that may, in contrast to manual tablet sorting, provide objective and reproducible tablet quality assurance. Visual inspection of the ever–increasing numbers of the produced imprinted tablets, regulatory enforced for unambiguous identification of active ingredients and dosage strength of each tablet, is especially demanding. The pr...

This paper is on automated visual inspection of tablets that may, in contrast to manual tablet sorting, provide objective and reproducible tablet quality assurance. Visual inspection of the ever-increasing numbers of produced imprinted tablets, regulatory enforced for unambiguous identification of active ingredients and dosage strength of each tablet, is especially demanding. The problem become...

It is estimated that over 25% of the world's commercial airline fleets are composed of aircraft over the age of 20 years. As a result of these aircraft exceeding their initial projected lifetime the issue of in-service inspection has become critical for the safe and economical management of fleets. The requirement for reducing inspection time by minimising 'false calls' and avoiding inspection ...

Steel ball surface-defect inspection was performed by using a new saddle-type eddy current sensor (SECS), which included a saddle coil and a signal conditioning circuit. The saddle coil was directly wound on the steel ball's outer bracket in a semi-circumferential direction. Driven by a friction wheel, the test steel ball rotated in a one-dimensional direction, such that the steel ball surface ...