Character line recognition method and character line recognition device
AssigneeNidec Sankyo Corporation
InventorHiroshi NAKAMURA
Life of this patent
Estimating the term…
Abstract
A character line recognition method for processing image data obtained by scanning a character line on a medium to recognize the character line may include processing the image data into monochrome binary format image data by using a predetermined binarization standard threshold; extracting character features from each character that composes the character line to calculate similarity with respect to standard character features; temporarily determining characters based on the similarity; calculating basic statistics of the similarity for all the characters which have been temporarily determined; and changing the binarization standard threshold based on the basic statistics and then returning to the processing the image data.
Claims11
A character line recognition method for processing image data obtained by scanning a character line on a medium to recognize the character line, the method comprising:
- processing the image data into monochrome binary format image data by using a predetermined binarization standard threshold;
- extracting character features from each character that composes the character line to calculate similarity with respect to standard character features;
- temporarily determining characters based on the similarity;
- calculating basic statistics of the similarity for all the characters which have been temporarily determined;
- and
- changing the binarization standard threshold based on the basic statistics and then returning to the processing the image data.
A character line recognition method for processing image data obtained by scanning a character line on a medium to recognize the character line, the method comprising:
- processing the image data into monochrome binary format image data by using a predetermined binarization standard threshold;
- extracting character features from each character composing the character line to calculate similarity with respect to standard character features;
- temporarily determining characters based on the similarity;
- classifying a recognition result of the entire character line, which includes all the characters temporarily determined, into one of a plurality of evaluation categories;
- and
- changing the binarization standard threshold based on the evaluation category in which the recognition result is classified and then returning to the processing the image data.
Dependencies are inferred from the claim text.