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According to the features of the inspection images for the steel rotary parts with defects, a novel image mosaic method, using Scale Invariant Feature Transform (SIFT) feature tracking with purifying feature points based on slope probability measure and RANSAC algorithm, is proposed. First, the method preprocesses the captured sequence images, and then implements projection transformation for these...
Surface defect analysis of rotary metal parts is a requirement to research quality and operating state of parts. This paper proposes a new approach and algorithms for surface defect analysis of rotary metal parts. Given the captured surface images as an input, the approach first uses the pose relation of the mechanism and a simple weighted average algorithm to obtain one seamless large image by fast...
Error analysis of free-form surfaces is a requirement to assure quality and to reduce manufacturing costs and rework. This paper proposes a new approach and algorithms for eliminate the accumulative error of multi-view registration. The main influence factor of sequential sub-surface registration error is analyzed detailedly. To eliminate accumulated errors of registration, a method based on an overall...
This paper presents a measurement and analysis system of surface defects on sphere parts. The purpose of the system is a requirement to assure high quality of parts. In the system, the developed surface defect detection (SDD) system using laser and CCD camera with improved accuracy, flexibility and advanced measuring efficiency advantages, and the surface defect analysis are used to identify defects...
This paper presents the practical implementation of a novel shape measurement and analysis scheme for automatic quality inspection of sheet metal parts with large and complicated curved surfaces used widely for manufacturing applications base on statistics. In the proposed technique, the online measurement system (OLMS) developed with improved accuracy, flexibility and advanced measuring efficiency...
Automated detection of surface defects on sphere parts is a requirement to assure high quality of parts. Unlike most common techniques, which are frequently based on manual estimations that lead to significant time and financial constraints, this paper presents a novel automated detection system of surface defects on sphere parts, by using laser and CCD measurements. The proposed system focuses on...
Automated inspection planning of freeform surfaces is a requirement to promote the efficiency and automation level of online inspection system and the quality of scanned data. This paper proposes a new approach and algorithms for the inspection planning of freeform surfaces. Given the CAD model of a measured surface as an input the approach first uses a search-based planning algorithm to determine...
This paper presents an measurement and analysis system of sheet metal parts with large and complicated curved surfaces used widely for manufacturing applications. For such sheet metal parts, which is characterized by a great volume, a big area, deforming easily and its loading and unloading can be difficultly, the required accuracy and rigidity of the system are critical features. The purpose of the...
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