Apparatus and method of matching symbols in a text image coding and decoding system

A method of a text image coding and decoding system, comprising:

• 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.

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:

• 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.

A method of a text image coding and decoding system, the method comprising:

• 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.