APPARATUS AND METHOD OF MATCHING SYMBOLS IN A TEXT IMAGE CODING AND DECODING SYSTEM
First Claim
1. An apparatus usable in a text image coding and decoding system, comprising:
- a matching unit to compute a first distance between a symbol of a text image with a reference symbol of a symbol dictionary, to determine whether the symbol matches with the reference symbol according to the first distance and a first reference, and to compute a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference, and to determine whether the symbol matches with the reference symbol according to the second distance and a second reference.
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Abstract
An apparatus of a text image coding and decoding system includes a matching unit to compute a first distance between a symbol of a text image with a reference symbol of a symbol dictionary, to determine whether the symbol matches with the reference symbol according to the first distance and a first reference, and to compute a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference, and to determine whether the symbol matches with the reference symbol according to the second distance and a second reference.
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Citations
39 Claims
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1. An apparatus usable in a text image coding and decoding system, comprising:
a matching unit to compute a first distance between a symbol of a text image with a reference symbol of a symbol dictionary, to determine whether the symbol matches with the reference symbol according to the first distance and a first reference, and to compute a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference, and to determine whether the symbol matches with the reference symbol according to the second distance and a second reference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 28, 29)
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18. A method of a text image coding and decoding system, comprising:
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computing a first distance between a symbol of a text image with a reference symbol of a symbol dictionary; determining whether the symbol matches with the reference symbol according to the first distance and a first reference; computing a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference; and determining whether the symbol matches with the reference symbol according to the second distance and a second reference. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 30, 31, 32, 33, 34)
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35. A computer readable recording medium containing computer readable codes as a program to execute a method in a text image coding and decoding system, the method comprising:
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computing a first distance between a symbol of a text image with a reference symbol of a symbol dictionary; determining whether the symbol matches with the reference symbol according to the first distance and a first reference; computing a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference; and determining whether the symbol matches with the reference symbol according to the second distance and a second reference.
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36. An apparatus usable in a text image coding and decoding system, comprising:
a matching unit to determine whether a symbol of input image data and a reference symbol of a dictionary match according to at least two different distances between the symbol and the reference symbol and at least two different reference values.
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37. An apparatus usable in a text image coding and decoding system, comprising:
a matching unit to determine whether a symbol of input image data and a reference symbol of a dictionary match according to a coarse operation using a first distance and a first reference, and to determine whether the symbol of the input image data and the reference symbol of the dictionary match according to a fine operation using a second distance and a second reference when the symbol of the input image data and the reference symbol of the dictionary do not match match in the coarse operation.
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38. A text image coding and decoding system, comprising:
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an encoding apparatus to compute a first distance between a symbol of a text image with a reference symbol of a symbol dictionary, to determine whether the symbol matches with the reference symbol according to the first distance and a first reference, and to compute a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference, and to determine whether the symbol matches with the reference symbol according to the second distance and a second reference, so that an encoded signal is generated according to the determination using the first and second distances and the first and second references; and a decoding apparatus to receive the encoded signal encoded according to the determination using the first and second distances and the first and second references, and to decode the received signal to reproduce the text image.
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39. A method of a text image coding and decoding system, the method comprising:
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computing a first distance between a symbol of a text image with a reference symbol of a symbol dictionary, to determine whether the symbol matches with the reference symbol according to the first distance and a first reference; computing a second distance between the one of the symbols with the reference symbol if the symbol does not match matches with the reference symbol according to the first distance and the first reference; determining whether the symbol matches with the reference symbol according to the second distance and a second reference, so that an encoded signal is generated according to the determination using the first and second distances and the first and second references; decoding the encoded signal encoded according to the determination using the first and second distances and the first and second references to reproduce the text image.
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Specification