In a broad aspect of the invention, the master printed form is scanned and processed according to a forms definition program to produce a virtual form file comprising a virtual layout of the significant regions such as bubble targets of printed material on the form, on a virtual coordinate system. Production forms that have been marked by subjects (e. g. , students, voters, survey respondents, etc. ), are then scanned to produce a marked form file of gray scale darkness values for each marked form. The marked form file and the virtual form file, are compared and processed to determine the location and spatial relationships of the marks on the marked form, in relation to the virtual coordinate system of the virtual form. The raw scan of each marked form is also processed to determine whether darkened areas on the marked form image should be interpreted as intentional responses from the subject, at the virtual coordinates where targets are located on the virtual form.
Edward F. Scanlon - Enfield CT, US Michael McAuliffe - Ellington CT, US Lee Zuidema - Lebanon CT, US Michael Wiggins - South Windsor CT, US Alfred Basso - Winsted CT, US
Assignee:
Scan-Optics Inc. - Manchester CT
International Classification:
G05B 19/18 G06K 9/20
US Classification:
700 59, 382317, 382321
Abstract:
A document image scanner; a camera having a field of view, for sensing differentiated information areas on each physical document as the physical document is transported; an image processing system associated with the camera, for producing a virtual image data file from the differentiated information areas sensed by the camera; sensors for determining the position of the physical document relative to the camera field of view; of electro-mechanical devices for actuating the transporter; and a data interface controller for receiving data from the sensors and controlling the electro-mechanical devices. A communications link is provided between the data interface controller and the image processing system for synchronization by the data interface controller, of the physical document as conveyed and the virtual document image captured by the image processing system.
Method Of Scoring A Printed Form Having Targets To Be Marked
A digital form scoring system that does not require that the targets on the marked form be digitally captured with a drop-out scanner. This is accomplished by locating each target, and in the mark interpretation logic, sensing an area within the outline of the target, then digitally removing all or most of thin lines of print that form a symbol or character within the outline, and removing the shading in the background, before applying the logic that determines whether a region of dark gray scale values in the sensing area should be considered a valid mark entered by the subject.
Sales Transaction Record Processing System And Method
Daniel E. Woods - Vernon CT Ronald E. Gocht - Manchester CT Peter M. Higgins - Enfield CT Anne M. Edwards - West Hartford CT Hugh Rowlands - Hartford CT Edward F. Scanlon - Ellington CT Jerry Putzer - Rocky Hill CT
Assignee:
Scan-Optics, Inc. - East Hartford CT
International Classification:
G06K 900
US Classification:
382 7
Abstract:
The processing of documents evidencing business transactions is enhanced by optically scanning and imaging only specific areas of interest, amount fields for example, and simultaneously storing the imaged amount fields in two separate files. Subsequently, only those images which correspond to a dollar amount which has not been successfully read will initially be displayed to an operator for key entry of the amount. A balancing procedure is performed and if a comparison of the total of the individual imaged amounts equals the total entered on a summary document further key entry of amounts will be unnecessary.
Ocr Error Correction Methods And Apparatus Utilizing Contextual Comparison
The present invention includes methods of correcting optical character recognition errors occurring during recognition of alphanumeric character strings contained within one or more predetermined types of alphanumeric character fields. The methods may be practiced with a document processing system having (1) a optical character recognition device for scanning documents and outputting bit-map image data; (2) a recognition engine for converting the bit-map image data into possibly correct alphanumeric characters with associated confidence values; and (3) at least one lexicon of character strings consisting of a list of at least a portion of all of the possible character string values for each of the fields being processed. The present invention corrects OCR errors by performing a contextual comparison analysis between the alphanumeric characters outputted from the recognition engine and the lexicon of character strings. A number of preferred embodiments, and several examples of the type of information which can be processed by those embodiments, are disclosed.
Dr. Scanlon graduated from the University of Missouri, Kansas City School of Medicine in 1984. He works in Lake Mary, FL and 1 other location and specializes in Pulmonary Critical Care Medicine and Sleep Medicine. Dr. Scanlon is affiliated with Central Florida Regional Hospital and Florida Hospital Fish Memorial.