1
Yongchun Lee, Joseph M Basile, Peter Rudak: Multi-windowing technique for thresholding an image using local image properties. Eastman Kodak Company, Milton S Sales and Stanger Michaelson Spivak and Wallace, December 10, 1996: US05583659 (84 worldwide citation)

A technique, specifically apparatus and an accompanying method, for accurately thresholding an image based on local image properties, specifically luminance variations, and particularly such a technique that uses multi-windowing for providing enhanced immunity to image noise and lessened boundary ar ...


2
Peter Rudak: Method for identifying unrecognizable characters in optical character recognition machines. Eastman Kodak Company, Dennis R Arndt, April 3, 1990: US04914709 (84 worldwide citation)

A method for identifying a character which cannot be machine read so that the operator may observe and hopefully recognize the character in question. A bit-map video image of the unrecognized character(s) is inserted in the ASCII data line of neighboring characters to create an impression of the ori ...


3
Yongchun Lee, Peter Rudak, Daniel T Jaramillo: Artifact removal technique for skew corrected images. Eastman Kodak Company, David A Novais, Nelson Adrian Blish, August 28, 2001: US06282326 (37 worldwide citation)

A digital image processing method and system is adapted to remove diagonally disposed artifacts such as lines, dots, dashes etc., from a scanned skew corrected document or image. The system and method converts a captured skew corrected image into first and second binary images and generates a map in ...


4
Peter Rudak: Apparatus for identifying and correcting unrecognizable characters in optical character recognition machines. Eastman Kodak Company, Dennis R Arndt, November 27, 1990: US04974260 (36 worldwide citation)

An apparatus for identifying a character which cannot be machine read so that the operator may observe and hopefully recognize the character in question. A bit-map video image of the unrecognized character(s) is inserted in the ASCII data line of neighboring characters to create an impression of the ...


5
Yongchun Lee, Peter Rudak: Region-based image binarization system. Eastman Kodak Company, David A Novais, Nelson Adrian Blish, May 21, 2002: US06393150 (29 worldwide citation)

A region-based binarization system applies adaptive thresholding and image rendering to a gray scale image to generate first and second binary images. The gray scale image can also be subsampled to acquire a low resolution image and locations of photographic images are detected in the low resolution ...


6
Peter Rudak, Yongchun Lee, James M Stefanko: Image processing system for reducing vertically disposed patterns on images produced by scanning. Eastman Kodak Company, November 13, 2001: US06317223 (21 worldwide citation)

A digital image processing system applies an edge-based adaptive thresholding technique with different contrast parameters to convert an image into first and second binary images. In the digital processing system of the invention, the first and second binary images are compared and a map of the diff ...


7
Peter Rudak: Automatic detection and selection of a drop-out color used in conjunction with optical character recognition of preprinted forms. Eastman Kodak Company, Dennis R Arndt, May 7, 1991: US05014328 (19 worldwide citation)

A method and apparatus for separating text information from previously printed material on forms by automatically detecting and selecting the drop-out color used on a preprinted form to enhance optical character recognition of information on such forms. Using a 3-color electronic scanner, the system ...


8
Peter Rudak, George A Hadgis: Dot-matrix video enhancement for optical character recognition. Eastman Kodak Company, Dennis R Arndt, January 26, 1993: US05182778 (16 worldwide citation)

A method and apparatus for eliminating discontinuities inherent to binary digital image data when hard copy text is generated by a dot-matrix printer. An M.times.M matrix is moved over a bit-mapped image of said text one pixel at a time, and for each pixel position, pixels are selectively converted ...


9
Peter Rudak: Automatic detection and selection of a drop-out color using zone calibration in conjunction with optical character recognition of preprinted forms. Eastman Kodak Company, Dennis R Arndt, May 7, 1991: US05014329 (16 worldwide citation)

A method and apparatus for separating text information from previously printed material on forms by automatically detecting and selecting the drop-out color based on sampling a color from a selected calibration zone or patch. Using a three-color electronic scanner, the filtering parameters are adjus ...


10
Peter Rudak, Yongchun Lee, Thomas J Morgan: Method for determining skew angle and location of a document in an over-scanned image. Eastman Kodak Company, Nelson Adrian Blish, April 11, 2006: US07027666 (15 worldwide citation)

A method for determining skew angle (5) and location of a document in an over-scanned digital image is disclosed. A document is scanned to capture a gray scale image. The outline pixel (1) of a document from the captured gray scale image are connected (2). An initial angle is set at zero and a x-min ...