Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Machine Vision Systems"”.
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Machine Vision Systems for Real-Time Plant Variability Sensing and in-Field Application
… directly related to the planter performance, a machine vision-based emerged corn plant sensing system (ECS) was developed for the performance evaluation for prototype planters. With the real-time image sequencing capability, the system also achieved an average spacing measurement error of less …
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Towards the Utilization of Machine Vision Systems as an Integral Component of Industrial Quality Monitoring Systems
Recent research discussed the development of image processing tools as a part of the quality control framework in manufacturing environments. This research could be divided into two image-based fault detection approaches: 1) MVS; and 2) MVS and control charts. Despite the intensive research in both …
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Efficient implementations of machine vision algorithms using a dynamically typed programming language
Current machine vision systems (or at least their performance critical parts) are predominantly implemented using statically typed programming languages such as C, C++, or Java. Statically typed languages however are unsuitable for development and maintenance of large scale systems. When choosing a …
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A general purpose machine vision prototyper for investigating the inspection of planar webs
… accurate, and flexible [Chin 1986]. Current machine vision systems are very specialized and inflexible in nature. A reason for the inflexibility of current machine vision systems is the need for real-time processing of image data. Such a need has forced both the use of very specialized image …
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An investigation into the use of froth colour as sensor for metallurgical grade in a copper system
In recent years the development of Machine Vision systems has opened up new possibilities for non-intrusive process performance sensors and process control. There are currently various Machine Vision systems on notation plants worldwide (Metso at Kennecott, Frothcam at Escondida). Extensive …
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Mobile hyperspectral imaging for structural damage detection
Numerous optical-imaging and machine-vision based inspection methods are found that aim to replace visual and human-based inspection with an automated or a highly efficient procedure. However, these machine-vision systems have not been entirely endorsed by civil engineers towards deploying these …
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Coping with uncertain dynamics in visual tracking : redundant state models and discrete search methods
… is applicable, in particular, to hierarchical machine vision systems that combine trackers at several spatio-temporal scales. In the second part of the dissertation, we propose supplementing exploration of the continuous likelihood surface with the discrete search in a fixed set of points …
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Image statistics and the perception of surface reflectance
… cues are important for this task. Traditional machine vision systems, on the other hand, are incapable of recognizing reflectance properties. Estimating the reflectance of a complex surface under unknown illumination from a single image is a hard problem. Recent work in reflectance recognition …
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Predictive multiple sampling algorithm with overlapping integration intervals for linear wide dynamic range integrating image sensors
Machine vision systems are used in a wide range of applications such as security, automated quality control and intelligent transportation systems. Several of these systems need to extract information from natural scenes in the section of the electromagnetic spectrum visible to humans. These scenes …
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The Use of Image and Point Cloud Data in Statistical Process Control
The volume of data acquired in production systems continues to expand. Emerging imaging technologies, such as machine vision systems (MVSs) and 3D surface scanners, diversify the types of data being collected, further pushing data collection beyond discrete dimensional data. These large and diverse …
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Edges from image
… operations can be realized most efficiently in machine vision systems that have special hardware designed for morphologic operations.
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Machine vision system developments for industrial inspection applications
… area of automated industrial inspection using machine vision systems. It is anticipated that the algorithms described will contribute to the design of a machine vision system for the automatic surface inspection of cylindrical pellets. Firstly, the acquisition and segmentation of pellet tray …
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Learning object behaviour models
… movements of an individual within a car-park. Machine vision systems wishing to exploit such behavioural knowledge have been limited by the inaccuracies inherent in hand-crafted models and the absence of a unified framework for the perception of powerful behaviour models. The research described …
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Texture and bubble size measurements for modelling concentrate grade in flotation froth systems
Numerous, machine vision systems for froth flotation have been developed over the last ten years; however, there are many aspects of the systems, that still require further development before they become one of the standard instruments present on industrial flotation operations. This thesis aims to …
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Using the Hough transform for analysis of images containing straight lines
… it is robust and efficient it is widely used in machine vision systems. The Hough transform has been shown to be a special case of the Radon transform. As a result, the Hough transform can be inverted using the inverse Radon transform. The Radon transform is important in the medical field, where …
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A knowledge-based machine vision system for automated industrial web inspection
Most current machine vision systems for industrial inspection were developed with one specific task in mind. Due to the requirement for real-time operation, these systems are typically implemented in special purpose hardware that performs very specific operations. Hence, these systems inflexible in …