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dc.contributor.authorTatem, James E.en_US
dc.date.accessioned2014-03-14T20:35:54Z
dc.date.available2014-03-14T20:35:54Z
dc.date.issued1990-05-01en_US
dc.identifier.otheretd-05092009-040743en_US
dc.identifier.urihttp://hdl.handle.net/10919/32455
dc.description.abstractJust as image processing and image data bases have moved out of the lab and into the office environment, so has the need for image enhancement. Image scanners must to be able to capture and store a wide variety of information including faded documents, carbon copies, signatures, postmarks, etc. OCR systems put further demands on scanned image quality in terms of low noise, and unbroken disconnected characters. Straight thresholding techniques do not always meet the performance requirements, but by applying simple image processing techniques some of these problems can be solved. However, more burden is placed on the users to control the image enhancement techniques. The users, most of whom have little technical background, want no part in adjusting parameters. This paper proposes a method of examining small windows of the image to derive parameter settings autonomously. Histograms allow rudimentary measures to be used in setting parameters for edge detection, non-linear filters, and point operators such as non-linear gray scale mapping. Some examples of automatic parameter setting are given in chapter three.en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1990.T384.pdfen_US
dc.subjectComputer graphics.en_US
dc.subject.lccLD5655.V855 1990.T384en_US
dc.titleAutomatic image analysis methods for use with local operatorsen_US
dc.typeThesisen_US
dc.contributor.departmentElectrical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical Engineeringen_US
dc.contributor.committeechairNadler, Mortonen_US
dc.contributor.committeememberConners, Richard W.en_US
dc.contributor.committeememberEhrich, Roger W.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05092009-040743/en_US
dc.date.sdate2009-05-09en_US
dc.date.rdate2011-03-15
dc.date.adate2009-05-09en_US


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