Automated visual inspection, a crucial manufacturing step, has been replacing the more time-consuming and less accurate human inspection. This research explores automated visual inspection of surface defects in a light-emitting diode (LED) chip. Commonly found on chip surface are water-spot blemishes which impair the appearance and functionality of LEDs. Automated inspection of water-spot defec...

This paper present the mathematical fundaments and experimental study of an algorithm used to find the optimal position for the camera lens to obtain a maximum of details. This information can be further applied to a appropriate system to automatically correct this position .The algorithm is based on the evaluation of a so call “resolution function” who calculates the maximum of gradient in a c...

Repeats are a common feature of genomic sequences and much remains to be understood of their origin and structure. The identification of repeated strings in genomic sequences is therefore of importance for a variety of applications in biology. In this paper a new method for finding all repeats and visualising them in a two dimensional plot is presented. The method is first applied to a set of c...

The needs for accurate and efficient object localization prevail in many industrial applications, such as automated visual inspection and factory automation. Image reference approach is very popular in automatic visual inspection due to its general applicability to a variety of inspection tasks. However, it requires very precise alignment of the inspection pattern in the image. To achieve very ...

1.1 Status of Automatic Appearance Inspection at FUJITSU TEN At manufacturing sites of FUJITSU TEN, to improve the external appearance of our products intended for the customers and to ensure the visual quality of our products, various inspections are performed. Conventionally, a visual inspection had been performed by inspectors. However, recently, to ensure the stability of the inspection qua...

In this paper, we propose a new visual inspection method of defect detection on textile surfaces; selectively removing the textural information from textile surfaces. For this purpose we use Wavelet Shrinkage, which was originally proposed by Donoho & Johnstone as a method to remove Gaussian white noise. We also propose a modification of Wavelet Shrinkage to selectively remove textural informat...

Accompanying the development of various highly technological materials, electronics and printing techniques advancing towards super-high precision and density, demands are progressively increasing for precisely automated visual inspections in their manufacturing processes. Despite these demands, inspections of printed patterns, sheet surfaces and semiconductors, in which defects on rather large...

This paper describes a telerobotic multi-sensor inspection system for space platforms developed at the Jet Propulsion Laboratory. A multi-sensor inspection end-eeector incorporates cameras and lighting for visual inspection, as well as temperature and gas leak-detection sensors. A graphical user interface at the remotely located operator workstation provides utilities to plan telerobot inspecti...

This paper describes a telerobotic multi-sensor inspection system for space platforms developed at the Jet Propulsion Laboratory. A multi-sensor inspection end-cffcctor incorporates cameras and lighting for visual inspection, as well as temperature and gas leakdetection sensors. A graphical ,user interface at the remotely located operator workstation provides utilities to plan telerobot inspect...

Humans and machines each have their own advantages and disadvantages in performing visual inspection tasks. In order to capitalize on the respective advantages and offset the disadvantages of humans and machines, hybrid inspection systems have been proposed. In response, research was conducted to evaluate three different inspection systems: a human inspection system and two hybrid inspection sy...