Method for object recognition and describing structure of graphical objects

摘要

The invention involves a method for processing of machine-readable forms or documents of non-fixed format. The method makes use of, for example, a structural description of characteristics of document elements, a description of a logical structure of the document, and methods of searching for document elements by using the structural description. A structural description of the spatial and parametric characteristics of document elements and the logical connections between elements may include a hierarchical logical structure of the elements, specification of an algorithm of determining the search constraints, specification of characteristics of every searched element, and specification of a set of parameters for a compound element identified on the basis of the aggregate of its components. The method of describing the logical structure of a document and methods of searching for elements of a document may be based on the use of the structural description.

主权项

1. An apparatus configured to store data for access by an application program being executed on a data processing system, the data related to a structural description of the spatial and parametric characteristics of an element and logical connections with other elements of a non-fixed layout document, the apparatus comprising:
a processor: a storage coupled to the processor: wherein the storage is configured to store a data structure, wherein the data structure includes information related to the non-fixed layout document; wherein the data structure is configured to include a plurality of assigned descriptions of logical connections of the element with the other elements, wherein the assigned descriptions of logical connections are represented as a hierarchical sequence of elements; wherein the data structure is further configured to include a plurality of assigned descriptions of spatial connections of the element, wherein the spatial connections relate to the other elements and a plurality of assigned descriptions of parametric characteristics of the element; wherein the data structure is configured to include an assigned algorithm for determining element search constraints and an assigned set of parameters for identification of a compound element on the basis of aggregate constituents, wherein the compound element is made up of a combination of the element and a plurality of the other elements.