Methods of object search and recognition

摘要

Embodiments of the invention disclose techniques for processing of machine-readable forms of unfixed or flexible format. An auxiliary brief description may be optionally specified to determine the spatial orientation of the image. A method of searching for elements of a document comprises the following main operations in addition to the operations of preliminary image processing: selecting the varieties of structural description from several available variants, determining the orientation of the image, selecting the text objects, where the text must be recognized, and determining the minimal required volume of recognition, recognizing the text objects, searching for elements of the form. Searching for elements of the form comprises the following actions: selecting a searched element in the structural description, gaining the algorithm of search constraints from the structural description, searching for the element, testing the obtained variants.

主权项

1. A system comprising:
a processor; and a memory coupled to the processor, wherein the memory stores instructions which when executed by the processor cause the system to:
detect, via instructions operating on a computing device, objects in an electronic image of a form;allocate a position for each object in the electronic image;select text objects;recognize text within the text objects; andsearch for elements in the electronic image of the form based on a structural description of the form, wherein to perform said search the instructions cause the system to:
select an element in the structural description for the searching operation;determine an algorithm for determining search constraints for the searching operation;determine search constraints using the determined algorithm; andsearch for the element using one or more of the search constraints, wherein to search for the element the instructions cause the system to:
search using a spatial characteristic of a search area for the element;search using a parametric characteristic of the element;search using an absolute or relative spatial characteristic of the element;search using a result of said text recognition within the text objects;identify variants of the element; andestimate, for the obtained variants of the element, a degree of correspondence of the respective variants to the element description.