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 20 of 137 for “"OCR"”.
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Ocr: A Statistical Model Of Multi-engine Ocr Systems
… three commercial Optical Character Recognition (OCR) engines. The purpose of this benchmark is to characterize the performance of the OCR engines with emphasis on the correlation of errors between each engine. The benchmarks are performed for the evaluation of the effect of a multi-OCR system …
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Feature recognition in OCR text
… word sequences, representing concepts, from OCR text. Unlike general index terms, concepts can consist of one or more terms that combined, have higher retrieval value than the terms alone (i.e. acronyms, proper nouns, phrases). An algorithm to recognize acronyms and their definitions will be …
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Effects of OCR errors on text categorization
In this thesis; we report on our experiments on training and categorization of optically recognized documents. In, particular, we present a lexicon-based error correction algorithm to improve the categorization process. This algorithm is based on edit distance techniques and information from highly …
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Retrieval effectiveness for OCR text using thesauri
… for document collection consisting of OCR text; The investigation encompasses several experiments with a modern retrieval engine based on the probabilistic model. Each experiment is performed on two document collections. The first version of the collection consists of raw OCR output. …
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Predictor of OCR accuracy using statistical techniques
… that predict optical character recognition (OCR) accuracy of an input image by a given OCR system were developed. Seven features associated with image defects were identified and utilized. Two kinds of nonparametric classification engines, the nearest neighbor rule-based and neural …
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Effect of OCR errors on short documents
… in this thesis is a study of the effect of OCR errors on short documents. OCR recognizes and translates text image into ASCII format. When this data is retrieved in response to a query, the retrieval performance depends on the efficiency of the OCR device used. Measures like recall, …
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Filtrování textů extrahovaných z PDF, OCR nebo webu
… a nevyžaduje vstup vzniklý pouze z nástrojů OCR nebo převodu z formátu PDF či webu.
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Scan your life : integrating OCR into your personal haystack!
I built a self-serve OCR station where anybody can scan in documents at high-speed - a public yet private ATM that accepts document deposits of a wider assortment than just checks. Depending on whether you scan a business card, an article or your entire filing cabinet, CPU-intensive recognition …
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Thesaurus-aided learning for rule-based categorization of Ocr texts
… approach to automatic text categorization on OCR collections can be improved by using domain-specific thesauri. A rule-based categorizer was constructed consisting of a C++ program called C-KANT which consults documents and creates a program which can be executed by the CLIPS expert system …
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A post processing system for global correction of Ocr generated errors
… discusses the design and implementation of an OCR post processing system. The system is used to perform automatic spelling detection and correction on noisy, OCR generated text. Unlike previous post processing systems, this system works in conjunction with an inverted file database system. The …
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The use of synthesized images to evaluate the performance of Ocr devices and algorithms
… performance of Optical Character Recognition (OCR) algorithms and devices. The value of this research lies in reducing the considerable costs associated with preparing test images for OCR research. The paper reports on a series of experiments in which synthesized images of text files in nine …
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The role of the Elementary Perceiver and Memorizer (EPAM) in optical character recognition (OCR)
… the role of EPAM is studied in terms of an OCR machine. The model is described in some detail. Its strengths and shortcomings have been pointed out. Some suggestions are provided for its shortcomings. Two of the suggestions are implemented and tested in this thesis. In EPAM, objects of any …
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Data Capture Automation in the South African Deeds Registry using Optical Character Recognition (OCR)
… of manual data capture is tested using an OCR pipeline. To adapt to the linguistics used in title deeds, text analysis and parsing is done using Regex. Uploading the scanned title deeds onto IPFS is as an additional security measure included in the pipeline. Previous research has failed to …
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Adaptive restoration of text images containing touching and broken characters
… performed by optical character recognition (OCR) systems. To make these systems practical, reliable OCR systems are essential. However, distortions in document images cause character recognition errors, thereby, reducing the accuracy of OCR systems. In document images, most OCR errors are …
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Text-image Restoration And Text Alignment For Multi-engine Optical Character Recognition Systems
… three different optical character recognition (OCR) engines (ExperVision® OCR, Scansoft OCR, and Abbyy® OCR) results using voting algorithms will get higher accuracy rate than each of the engines individually. While a voting algorithm has been realized, several aspects to automate and …
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Transient oxygen consumption rate measurements with the BDT̳M̳ oxygen biosensor system
Oxygen consumption rate (OCR) is a reliable indicator of tissue health. Recently, the OCR of isolated human islets has been shown to predict transplant outcome in diabetic mice. The Oxygen Biosensor System (OBS) is a high-throughput, convenient assay that indirectly measures oxygen consumption by …
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Adaptive sorting algorithms for evaluation of automatic zoning
Optical Character Recognition (OCR) involves analysis of machine-printed and hand written document images. The first step in an OCR process is to locate the text to be recognized on a page. An OCR device tries to identify the characters in these text regions and outputs the characters in ASCII. To …
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A multi-scale model for piston ring dynamics, lubrication and oil transport in internal combustion engines
… the sealing performance of the Oil Control Ring (OCR), whose function is to limit the amount of oil supplied to the ring pack. The contributions of the three main mechanisms previously identified, to oil flow past the OCR are quantified: - Deformation of the cylinder under operating conditions can …
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Cll Metabolism Is Regulated By Prognostic Factors, Modulated By Stroma and Abrogated By Pi3K Inhibition
… low in CLL samples, but oxygen consumption (OCR) varied considerably. Higher OCR was associated with poor prognostic factors such as ZAP 70 positivity, unmutated IgVH, high β2M levels, and higher Rai stage.<strong> </strong>Co-culture with the NK-tert stromal line increased basal OCR and …
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