The tesseract extracts the micro feature from image blob. Eventually,
the function will find out the outlines of the character. Each outline
is defined as two points, the start and the end.
My question is accuracy of defining these list of two-points if the
character is a small size font, E.G x<10 and y<20 ?
Thank.
Code segment in mfx.cpp.
/
*---------------------------------------------------------------------------
*/
MICROFEATURE ExtractMicroFeature(MFOUTLINE Start, MFOUTLINE End) {
/*
** Parameters:
** Start starting point of micro-feature
** End ending point of micro-feature
** Globals: none
** Operation:
** This routine computes the feature parameters which
describe
** the micro-feature that starts and Start and ends at
End.
** A new micro-feature is allocated, filled with the
feature
** parameters, and returned. The routine assumes that
** Start and End are not the same point. If they are
the
** same point, NULL is returned, a warning message is
** printed, and the current outline is dumped to stdout.
** Return: New micro-feature or NULL if the feature was
rejected.
** Exceptions: none
** History: 7/26/89, DSJ, Created.
** 11/17/89, DSJ, Added handling for Start and End same
point.
*/
MICROFEATURE NewFeature;
MFEDGEPT *P1, *P2;
P1 = PointAt (Start);
P2 = PointAt (End);
NewFeature = NewMicroFeature ();
NewFeature[XPOSITION] = AverageOf (P1->Point.x, P2->Point.x);
NewFeature[YPOSITION] = AverageOf (P1->Point.y, P2->Point.y);
NewFeature[MFLENGTH] = DistanceBetween (P1->Point, P2->Point);
NewFeature[ORIENTATION] =
NormalizedAngleFrom (&((P1)->Point), &((P2)->Point), 1.0);
ComputeBulges(Start, End, NewFeature);
return (NewFeature);
} /* ExtractMicroFeature */
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