IDENTIFYING PICTURE AREAS BASED ON GRADIENT IMAGE ANALYSIS
First Claim
Patent Images
1. A method for identifying areas in a document image, the method comprising:
- generating binarized and gradient images based on the document image; and
performing a classification operation to classify each area in the document image into a class based on attributes computed on the binarized and gradient images;
wherein the class comprises at least one of a picture area, a text area and a noise area.
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Abstract
In one embodiment, a method for identifying areas in a document image is provided. The method comprises generating binarized and gradient images based on the document image; and performing a classification operation to classify areas in the document image into one of a noise area and a picture area based on attributes computed on the binarized and gradient images.
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Citations
24 Claims
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1. A method for identifying areas in a document image, the method comprising:
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generating binarized and gradient images based on the document image; and performing a classification operation to classify each area in the document image into a class based on attributes computed on the binarized and gradient images;
wherein the class comprises at least one of a picture area, a text area and a noise area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
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11. A document analysis system, comprising:
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a processor; and a memory coupled to the processor;
the memory storing instructions to perform a document analysis method for identifying areas in a document image, the method comprising;generating binarized and gradient images based on the document image; and performing a classification operation to classify each area in the document image into a class based on attributes computed on the binarized and gradient images;
wherein the class comprises at least one of a picture area, a text area and a noise area. - View Dependent Claims (15, 16, 17)
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18. A computer-readable medium having stored thereon a sequence of instructions which when executed by a processing system cause the system to perform a method for identifying areas in a document image, the method comprising:
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generating binarized and gradient images based on the document image; and performing a classification operation to classify each area in the document image into a class based on attributes computed on the binarized and gradient images;
wherein the class comprises at least one of a picture area, a text area and a noise area. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification