IG_REC_approx_regex_search

Matches text from an ImageGear multi-page document.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_REC_approx_regex_search_document( const HIG_REC_APPROX_REGEX higRecApproxRegex, const HMIGEAR higDocument, const AT_REC_MATCH_RESULT** const match_result_array, AT_INT* const match_result_size );

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AT_ERRCOUNT ACCUAPI IG_REC_approx_regex_search_document(
   const HIG_REC_APPROX_REGEX higRecApproxRegex,
   const HMIGEAR higDocument,
   const AT_REC_MATCH_RESULT** const  match_result_array,
   AT_INT* const  match_result_size
);

Arguments:

Name	Type	Description
higRecApproxRegex	const HIG_REC_APPROX_REGEX	The handle to an approximate regex instance.
higDocument	const HMIGEAR	The handle to an ImageGear multi-page document.
match_result_array	const AT_REC_MATCH_RESULT** const	A pointer to a vector of match result instances. The approximate regex owns this data. Callers that require access to this data after the approximate regex is deleted must duplicate this data and assume ownership of the copy.
match_result_size	AT_INT* const	The number of match results in match_result_array.

Return Value:

The number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.

Supported Raster Image Formats:

This function does not process image pixels.

Example:

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AT_ERRCOUNT errCount = 0 ; HMIGEAR higDocument = 0 ; HIG_REC_APPROX_REGEX higApproxRegex = 0 ; LPAT_WCHAR patterns [] = { L".+" } ; const AT_REC_MATCH_RESULT* match_result_array = 0 ; AT_INT match_result_size = 0 ; IG_mpi_create( &higDocument, 0 ); IG_mpi_file_open( "multi.tif", higDocument , 0 , IG_MP_OPENMODE_READONLY ); IG_REC_approx_regex_create( &higApproxRegex ) ; IG_REC_approx_regex_pattern_set( higApproxRegex , patterns , 1 ) ; errCount = IG_REC_approx_regex_search_document ( higApproxRegex, higDocument, &match_result_array, &match_result_size ) ; IG_REC_approx_regex_delete( higApproxRegex ) ; IG_mpi_delete( higDocument ) ;

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AT_ERRCOUNT errCount = 0 ;
HMIGEAR higDocument = 0 ;
HIG_REC_APPROX_REGEX higApproxRegex = 0 ;
LPAT_WCHAR patterns [] = { L".+" } ;
const AT_REC_MATCH_RESULT* match_result_array = 0 ;
AT_INT match_result_size = 0 ;

IG_mpi_create( &higDocument, 0 ); 
IG_mpi_file_open( "multi.tif", higDocument , 0 , IG_MP_OPENMODE_READONLY ); 
IG_REC_approx_regex_create( &higApproxRegex ) ;    
IG_REC_approx_regex_pattern_set( higApproxRegex , patterns , 1 ) ;
errCount = IG_REC_approx_regex_search_document
                          ( higApproxRegex, 
                            higDocument,
                            &match_result_array,
                            &match_result_size
                          ) ;
IG_REC_approx_regex_delete( higApproxRegex ) ;
IG_mpi_delete( higDocument ) ;

Remarks:

Text recognition is performed on each page. The resulting text from each page is searched for pattern matches.

Supports matching Asian language text.

The following installed callbacks are invoked during execution of this function:

Recognized Word Callback. Invoked after a word boundary is recognized. Inspect the arguments to identify Unicode character codes, bounding rectangles, and confidence rating. Words are sorted in logical order.
Match Callback. Invoked after a pattern match is detected. Matched text may be either accepted or rejected. Only accepted matches will be present in match_result_array. If a Match Callback is not installed, then all matches are accepted.
Progress Callback. Invoked periodically to abort a lengthy search operation. If the search is stopped, then only those matches already accepted will be returned in match_result_array. A warning will be reported in the error stack if the operation is aborted.