Code conversion apparatus, code conversion method and storage medium
AssigneeRicoh Company, Ltd.
InventorsHiroyuki Sakuyama, Yasuyuki Nomizu, Junichi Hara, Taku Kodama, Nekka Matsuura, Yasuyuki Shinkai, Takanori Yano, Toshio Miyazawa, Takayuki Nishimura
Life of this patent
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Abstract
A code conversion apparatus includes an input section to input compressed and transformed input codes, a header information rewriting section to rewrite only header information within the codes so as to change a decoded state of the input codes, and an output section to output the codes, including rewritten header information, to a target object such as a display unit and an external equipment.
Claims41
A code conversion apparatus comprising:
- input means for inputting a code sequence having a JPEG2000 coding format and including code data and header information that is progressively arranged with respect to one of resolution levels, layers, components and positions;
- header information rewriting means for rewriting information related to one of the resolution levels, the layers, the components and the positions of the header information in the code sequence, so as to partially decode the code sequence that is input by said input means with respect to one of the resolution levels, the layers, the components and the positions;
- and
- output means for outputting the code sequence, including the header information that is rewritten by said header information rewriting means, to a target object.
A code conversion apparatus comprising:
- an input section configured to input a code sequence having a JPEG2000 coding format and including code data and header information that is progressively arranged with respect to one of resolution levels, layers, components and positions;
- a header information rewriting section configured to rewrite information related to one of the resolution levels, the layers, the components and the positions of the header information in the code sequence, so as to partially decode the code sequence that is input by said input section with respect to one of the resolution levels, the layers, the components and the positions;
- and
- an output section configured to output the code sequence, including the header information that is rewritten by said header information rewriting section, to a target object.
A code conversion method comprising the steps of:
- (a) inputting a code sequence having a JPEG2000 coding format and including code data and header information that is progressively arranged with respect to one of resolution levels, layers, components and positions;
- (b) rewriting information related to one of the resolution levels, the layers, the components and the positions of the header information in the code sequence, so as to partially decode the code sequence that is input by said step (a) with respect to one of the resolution levels, the layers, the components and the positions;
- and
- (c) outputting the code sequence, including the header information that is rewritten by said step (b), to a target object.
A computer-readable storage medium which stores a program for causing a computer to carry out a code conversion process, said program comprising:
- an input procedure causing the computer to input a code sequence having a JPEG2000 coding format and including code data and header information that is progressively arranged with respect to one of resolution levels, layers, components and positions;
- a header information rewriting procedure causing the computer to rewrite information related to one of the resolution levels, the layers, the components and the positions of the header information in the code sequence, so as to partially decode the code sequence that is input by said input procedure with respect to one of the resolution levels, the layers, the components and the positions;
- and
- an output procedure causing the computer to output the code sequence, including the header information that is rewritten by said header information rewriting procedure, to a target object.
A code conversion apparatus comprising:
- an input section configured to input compressed and transformed input codes;
- a header information rewriting section configured to rewrite only header information within the codes so as to partially decode the input codes;
- and
- an output section configured to output the codes, including rewritten header information, to a target object,
- wherein the header information rewritten by said header information rewriting section includes a number of elements in a highest level of a progressive order and information related to the elements.
A computer-readable storage medium which stores a program for causing a computer to carry out a code conversion process, said process comprising:
- inputting compressed and transformed input codes;
- rewriting only header information within the codes so as to partially decode the input codes;
- and
- outputting the codes, including rewritten header information, to a target object,
- wherein the rewritten header information includes a number of elements in a highest level of a progressive order and information related to the elements.
Dependencies are inferred from the claim text.