TEXT LINE FRAGMENTS FOR TEXT LINE ANALYSIS
First Claim
Patent Images
1. A method of determining a local text line flow from an image of a document, the method comprising:
- receiving a plurality of text connected components from the image;
forming text line fragments of the text connected components based on interconnection features between neighbouring text connected components of the plurality of text connected components, the text line fragments having a predetermined maximum aspect ratio; and
determining the local text line flow for the document based on a properties of the text line fragments.
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Abstract
A method of determining a local text line flow from an image of a document is disclosed. The method receives a plurality of text connected components from the image and forms text line fragments of the text connected components based on interconnection features between neighbouring text connected components of the plurality of text connected components. The text line fragments have a predetermined maximum aspect ratio. The method then determines the local text line flow for the document based on a properties of the text line fragments.
26 Citations
19 Claims
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1. A method of determining a local text line flow from an image of a document, the method comprising:
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receiving a plurality of text connected components from the image; forming text line fragments of the text connected components based on interconnection features between neighbouring text connected components of the plurality of text connected components, the text line fragments having a predetermined maximum aspect ratio; and determining the local text line flow for the document based on a properties of the text line fragments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of determining a local text line flow from an image of a document, the method comprising:
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receiving a plurality of text CCs from the image; forming text line fragments of the text CCs based on interconnection features between neighbouring text CCs of the plurality of text CCs; forming sub-text line fragments by splitting the formed text line fragments according to an aspect ratio of the formed text line fragments and a comparison of a size of the text line fragment with a size of the text CCs forming the text line fragment; and determining the local text line flow for the document based on a centre of each of the sub-text line fragments and a direction of an axis of each of the sub-text line fragments.
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17. A non-transitory computer readable storage medium having a program recorded thereon, the program being executable by computerised apparatus to determine a local text line flow from an image of a document, the program comprising:
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code for receiving a plurality of text connected components from the image; code for forming text line fragments of the text connected components based on interconnection features between neighbouring text connected components of the plurality of text connected components, the text line fragments having a predetermined maximum aspect ratio; and code for determining the local text line flow for the document based on a properties of the text line fragments.
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18. A non-transitory computer readable storage medium having a program recorded thereon, the program being executable by computerised apparatus to determine a local text line flow from an image of a document, the program comprising:
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code for receiving a plurality of text CCs from the image; code for forming text line fragments of the text CCs based on interconnection features between neighbouring text CCs of the plurality of text CCs; code for forming sub-text line fragments by splitting the formed text line fragments according to an aspect ratio of the formed text line fragments and a comparison of a size of the text line fragment with a size of the text CCs forming the text line fragment; and code for determining the local text line flow for the document based on a centre of each of the sub-text line fragments and a direction of an axis of each of the sub-text line fragments.
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19. Computerised apparatus comprising a processor and a memory, the memory having recorded therein a program executable by the processor for determining a local text line flow from an image of a document, the program being configured to implement the method steps of:
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receiving a plurality of text connected components from the image; forming text line fragments of the text connected components based on interconnection features between neighbouring text connected components of the plurality of text connected components, the text line fragments having a predetermined maximum aspect ratio; and determining the local text line flow for the document based on a properties of the text line fragments.
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Specification