Appeal No. 2001-0872
Application No. 08/880,137
1. A method for operating a processor-controlled machine to determine an unknown value
of a text image layout parameter used with a two-dimensional (2D) image model; the machine
including a signal source for receiving data; memory for storing data; and a processor connected for
accessing instruction data which is stored in the memory for operating the machine; the processor
being further connected for receiving data from the signal source; and connected for storing data in
the memory; the method comprising:
obtaining a data structure indicating a 2D image model modeling as an image grammar
an image layout structure common to a class of 2D text images; the 2D image
model including a production rule indicating that first and second image constituents
occurring in a 2D text image consistent with the image layout structure produce a
third image constituent occurring therein; the production rule including a text image
layout parameter that indicates the spatial relationship between the first and second
image constituents; a value of the text image layout parameter being unknown;
receiving a plurality of input two-dimensional (2D) text image data structures from the
signal source; each input 2D text image represented by the plurality of input 2D text
image data structures having the image layout structure common to the
class of 2D text images and including at least one occurrence of first and second
image constituents;
for each respective input 2D text image,
producing a data structure, using the 2D image model, indicating first and
second image positions in the input 2D text image identifying respective
locations of the first and second image constituents therein; and
obtaining document-specific measurement data about the first and second image
constituents from the data structure; and
computing a value for the text image layout parameter using the document-specific
measurement data obtained from the data structures for the respective input 2D
2
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Last modified: November 3, 2007