Rotatable image reading apparatus that performs shading correction, method of controlling the same, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorYasushi Shinto
Life of this patent
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Abstract
An image reading apparatus capable of efficiently performing shading correction. The image reading apparatus includes a reading unit that is rotatable for reading an original. A CPU causes the reading unit to read, while the reading unit rotates after reading an image of the original, image data for use in correction of the read image. The CPU performs the correction using the image data read by the reading unit.
Claims9
An image reading apparatus comprising:
- a reading unit configured to be rotatable for reading an original;
- a control unit configured to cause said reading unit to read, by causing said reading unit to rotate after reading an image of the original, a reference member for use in shading correction;
- and
- a correction unit configured to perform the shading correction using a read result of the reference member,
- wherein said control unit causes said reading unit to read the reference member, after said reading unit in a first orientation reads an image on a first surface of the original and before said reading unit is rotated to a second orientation for reading a second surface of the original.
A method of controlling an image reading apparatus including a reading unit configured to be rotatable for reading an original, comprising:
- causing the reading unit to read, by causing the reading unit to rotate after reading an image of the original, a reference member for use in shading correction;
- and
- performing the shading correction using a read result of the reference member,
- wherein the reading unit is caused to read the reference member, after said reading unit in a first orientation reads an image on a first surface of the original and before said reading unit is rotated to a second orientation for reading a second surface of the original.
A non-transitory computer-readable storage medium storing a computer-executable program for causing a computer to execute a method of controlling an image reading apparatus including a reading unit configured to be rotatable for reading an original,
- wherein the method comprises:
- causing the reading unit to read, by causing the reading unit to rotate after reading an image of the original, a reference member for use in shading correction;
- and
- performing the shading correction using a read result of the reference member,
- wherein the reading unit is caused to read the reference member, after said reading unit in a first orientation reads an image on a first surface of the original and before said reading unit is rotated to a second orientation for reading a second surface of the original.
An image reading apparatus comprising:
- a rotatable reading unit configured to read an image;
- a first conveying path configured to convey a sheet along the first conveying path;
- a second conveying path configured to convey the sheet along the second conveying path;
- a reference member used for shading correction;
- and
- a control unit configured to cause the reading unit to rotate to a first reading position where the reading unit faces the first conveying path, to rotate to a second reading position where the reading unit faces the reference member, and to rotate to a third reading position where the reading unit faces the second conveying path.
Dependencies are inferred from the claim text.