Image processing apparatus, control method for image processing apparatus, program, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorMasahiro Takayanagi
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Abstract
When an original image containing a code image is lossy-compressed, the image quality of the code image is deteriorated. Thus, due to the deterioration of the image quality of the code image, information contained in the code image cannot be acquired. Thus, a portion corresponding to the code image is not lossy compressed, and the portion corresponding to the code image, which has not been subjected to lossy compression, is stored in a storage unit.
Claims15
An image processing apparatus comprising:
- a first unit configured to lossy-compress an original image;
- a second unit configured to determine whether the original image that has not been subjected to lossy compression contains a code image, and to extract the code image from the original image that has not been subjected to lossy compression when it is determined that the original image that has not been subjected to lossy compression contains a code image;
- a third unit configured to store the original image lossy-compressed by the first unit in a storage unit and expand the original image stored in the storage unit;
- and
- a fourth unit configured to transmit the expanded lossy-compressed original image to a printing unit,
- wherein the first and second units perform processing in parallel and the fourth unit performs processing before completion of processing of the second unit.
An image processing method for an image processing apparatus, the method comprising steps of:
- lossy-compressing an original image;
- determining whether the original image that has not been subjected to lossy compression contains a code image;
- extracting the code image from the original image that has not been subjected to lossy compression when it is determined that the original image that has not been subjected to lossy compression contains a code image;
- storing the lossy-compressed original image in a storage unit;
- expanding the original image stored in the storage unit;
- and
- transmitting the expanded lossy-compressed original image to a printing unit,
- wherein processing of the lossy-compressing and determining steps is performed in parallel and processing of the transmitting step is performed before completion of processing of the determining and extracting steps.
A computer-readable storage medium having stored thereon computer-executable instructions for performing a method for an image processing apparatus, the method comprising steps of:
- lossy-compressing an original image;
- determining whether the original image that has not been subjected to lossy compression contains a code image;
- extracting the code image from the original image that has not been subjected to lossy compression when it is determined that the original image that has not been subjected to lossy compression contains a code image;
- storing the original image lossy-compressed in a storage unit;
- expanding the original image stored in the storage unit;
- and
- transmitting the expanded lossy-compressed original image to a printing unit,
- wherein processing of the lossy-compressing and determining steps is performed in parallel and processing of the transmitting step is performed before completion of processing of the determining and extracting steps.
Dependencies are inferred from the claim text.