This study proposes a generic model for optical character recognition (OCR) on remote objects, using digitised video and digital camera input. Currently, most applications using this technique are ad hoc. Lack of formalism creates the risk of fragmented adhocracy. The purpose of this model is to introduce some degree of formalism based on classical character recognition, thereby providing a theoretical basis, and to explore the potential of character recognition on digital images for automated reading. The model also propogates the use of off the shelf commercial software and hardware currently available. The model “CRODI” which is an abbreviation for Character Recognition On Digital Images, consists of several objects or building blocks necessary for any remote character recognition application. In order to provide an optimal solution for any application it is necessary to select the most appropriate and effective building blocks. The combination and sequence in which these building blocks are selected is called a visual routine. This study does not only focus on choosing the correct building blocks for an application but also describes how certain visual routines and methodologies can be used to cater for applications with a certain profile. Furthermore, a formal notation in the form of an Expert Support System is introduced to describe optimised visual routines and the selection of building blocks in an efficient way. An example is given in chapter six of the efficiency and effectiveness of the model on a classical but dynamic application, where character recognition is performed on stationary and fast moving vehicles’ number plates. The biggest advantage of CRODI is to propose a generic framework or model from which an intuitive selection of objects, visual routines or methodologies can occur to expedite and optimise remote character recognition on almost any stationary or moving object. / Ehlers, E.M., Prof.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:uj/uj:2396 |
| Date | 29 May 2008 |
| Creators | Bosch, Johannes Brits |
| Source Sets | South African National ETD Portal |
| Detected Language | English |
| Type | Thesis |
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