P

Inventor

HUTTENLOCHER DANIEL P

US24 patents

Patents

24 patents
US5884014AMar 16, 1999

Fontless structured document image representations for efficient rendering

XEROX CORP181 citations99
US6449718B1Sep 10, 2002

Methods and apparatus for partial encryption of tokenized documents

XEROX CORP88 citations98
US6249604B1Jun 19, 2001

Method for determining boundaries of words in text

XEROX CORP132 citations98
US6011905AJan 4, 2000

Using fontless structured document image representations to render displayed and printed documents at preferred resolutions

XEROX CORP249 citations98
US5748805AMay 5, 1998

Method and apparatus for supplementing significant portions of a document selected without document image decoding with retrieved information

XEROX CORP231 citations98
US5539841AJul 23, 1996

Method for comparing image sections to determine similarity therebetween

XEROX CORP153 citations98
US5321770AJun 14, 1994

Method for determining boundaries of words in text

XEROX CORP178 citations98
US5491760AFeb 13, 1996

Method and apparatus for summarizing a document without document image decoding

XEROX CORP104 citations97
US5410611AApr 25, 1995

Method for identifying word bounding boxes in text

XEROX CORP111 citations97
US5390259AFeb 14, 1995

Methods and apparatus for selecting semantically significant images in a document image without decoding image content

XEROX CORP115 citations97
US5687253ANov 11, 1997

Method for comparing word shapes

XEROX CORP66 citations96
US5557689ASep 17, 1996

Optical word recognition by examination of word shape

XEROX CORP89 citations96
US5513277AApr 30, 1996

Measuring character and stroke sizes and spacings for an image

XEROX CORP58 citations96
US5245674ASep 14, 1993

Image processing using distance as a function of direction

XEROX CORP77 citations96
US6275301B1Aug 14, 2001

Relabeling of tokenized symbols in fontless structured document image representations

XEROX CORP71 citations95
US5325444AJun 28, 1994

Method and apparatus for determining the frequency of words in a document without document image decoding

XEROX CORP83 citations94
US6529285B2Mar 4, 2003

Relabelling of tokenized symbols in fontless structured document image representations

XEROX CORP21 citations92
US5640466AJun 17, 1997

Method of deriving wordshapes for subsequent comparison

XEROX CORP49 citations92
US5416851AMay 16, 1995

Image analysis based on location sampling

XEROX CORP24 citations92
US5384863AJan 24, 1995

Methods and apparatus for automatic modification of semantically significant portions of a document without document image decoding

XEROX CORP49 citations92
US5253307AOct 12, 1993

Image analysis to obtain typeface information

XEROX CORP52 citations92
US5835638ANov 10, 1998

Method and apparatus for comparing symbols extracted from binary images of text using topology preserved dilated representations of the symbols

XEROX CORP44 citations90
US6295371B1Sep 25, 2001

Method and apparatus for image processing employing image segmentation using tokenization

XEROX CORP47 citations89
US6373997B1Apr 16, 2002

Coarse and fine skew measurement

XEROX CORP11 citations73