Image processing method and apparatus for processing a large-size original
AssigneeCanon Kabushiki Kaisha
InventorsKamon Hasuo, Takeshi Nakamura
Life of this patent
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Abstract
A large-size (A3-size) original is folded into two small-size (A4-size) portions. Images on the surfaces of the respective portions are read by image reading units. Image data output from the image reading units are stored in a memory. A detection unit detects end positions of the read images, and skew of each of the images is corrected. An image synthesis unit synthesizes the image data of the respective surfaces based on the output of the detection unit to provide the original single image. Thus, it is possible to read even a large-size original.
Claims14
An image synthesis apparatus comprising:
- first reading means for reading an image on a front surface of an original;
- second reading means for reading an image on a back surface of the original;
- setting means for setting a mode of reading images on a folded original;
- connection means for connecting an image on a first surface of the folded original read by said first reading means and an image on a second surface of the folded original read by said second reading means to each other as a single image when the mode has been set by said setting means;
- and
- processing means for processing the image connected by said connection means.
An image processing apparatus comprising:
- first reading means for reading an image on a front surface of an original;
- second reading means for reading an image on a back surface of the original;
- assigning means for assigning one of a first reading mode of reading an image on one surface of a small-size original, a second reading mode of reading images on both surfaces of the small-size original, and a third reading mode of reading an image on one surface of a large-size original;
- and
- processing means for processing an image signal output from said first reading means when the first reading mode has been assigned, and for processing an image signal output from said first reading means and an image signal output from said second reading means when the second reading mode or the third reading mode has been assigned.
An image synthesis method using an image reading apparatus comprising first reading means for reading an image on a front surface of an original and second reading means for reading an image on a back surface of the original, said method comprising the steps of:
- setting a mode of reading images on a folded original;
- reading an image on a first surface of the folded original by the first reading means, and reading an image on a second surface of the folded original by the second reading means;
- connecting the image on the first surface read by the first reading means and the image on the second surface read by the second reading means to each other as a single image;
- and
- processing the connected image.
An image synthesis method using an image reading apparatus comprising first reading means for reading an image on a front surface of an original and second reading means for reading an image on a back surface of the original, said method comprising the steps of:
- setting one of a first reading mode of reading an image on one surface of a small-size original, a second mode reading mode of reading images on both surfaces of the small-size original, and a third reading mode of reading an image on one surface of a large-size original;
- and
- processing an image signal output from the first reading means when the first reading mode has been set, and processing an image signal output from the first reading means and an image signal output from the second reading means when the second reading mode or the third reading mode has been set.
Dependencies are inferred from the claim text.