3. The JPEG2000 decoding method of claim 2 , further comprising displaying the text data acquired by said XML data processor in the middle of JPEG2000 decoding executed by the JPEG2000 decoder.
4. The JPEG2000 decoding method of claim 3 , further comprising allowing a user to select, using a selector, whether to read XML data stored in an XML box added into a bit stream constructing said JPEG2000 file in the middle of JPEG2000 decoding executed by the JPEG2000 decoder; wherein, when the choice to read the XML data is selected through the selector, the XML data is read.