Text line normalization systems and methods
AssigneeLEVERTON GmbH
InventorsFlorian Kuhlmann, Michael Kieweg, Saurabh Shekhar Verma
Life of this patent
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Abstract
A method for estimating text heights of text line images includes estimating a text height with a sequence recognizer. The method further includes normalizing a vertical dimension and/or position of text within a text line image based on the text height. The method may also further include calculating a feature of the text line image. In some examples, the sequence recognizer estimates the text height with a machine learning model.
Claims20
A computer-implemented method comprising:
- (a) receiving a first text line image associated with a first line of text contained within a document image;
- (b) estimating a first text height of the first text line image with a sequence recognizer;
- and
- (c) normalizing the first text line image based on the first text height.
A system comprising:
- a processor;
- and
- a memory storing instructions which, when executed by the processor, cause the processor to:
- (a) receive a first text line image associated with a first line of text contained within a document image;
- (b) estimate a first text height of the first text line image with a sequence recognizer;
- and
- (c) normalize the first text line image based on the first text height.
A computer readable medium storing instructions which, when executed by one or more processors, cause the one or more processors to:
- (a) receive a first text line image associated with a first line of text contained within a document image;
- (b) estimate a first text height of the first text line image with a sequence recognizer;
- and
- (c) normalize the first text line image based on the line height measure.
Dependencies are inferred from the claim text.