Image reading apparatus, method for controlling the same, and storage medium

• US 9,571,694 B2
• Filed: 06/03/2015
• Issued: 02/14/2017
• Est. Priority Date: 06/06/2014
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hirao, Toyomi
• Primary Examiner(s): Worku, Negussie
• Application Number:
  US14/729,980
• Publication Number:
  US 20150358503A1
• Time in Patent Office: 622 Days
• Field of Search: 358/1.13, 358/474, 358/1.12, 358/1.15, 358/1.9, 358/505, 358/296, 358/444, 358/448, 358/471, 358/473, 358/475, 358/498, 358/500, 358/501, 358/509, 358/518
• US Class Current: 1/1
• CPC Class Codes: G06V 30/10 Character recognition
• CPC Class Codes: G06V 30/2504 Coarse or fine approaches, e.g. resolution of ambiguities or multiscale approaches
• CPC Class Codes: H04N 1/00822 Selecting or setting a particular reading mode, e.g. from amongst a plurality of modes, simplex or duplex, or high or low resolution
• CPC Class Codes: H04N 1/0443 Varying the scanning velocity or position
• CPC Class Codes: H04N 1/3935 with modification of image resolution, i.e. determining the values of picture elements at new relative positions
• CPC Class Codes: H04N 2201/0081 Image reader H04N2201/0091 - H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/0094 Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception

Abstract

A resolution of an image data needs to be higher than a predetermined value for character recognition. A control method in an image reading apparatus having a reading unit for reading an image of a document to generate image data, and a storing unit for storing the image data generated by the reading unit includes receiving from a user, after the image data is stored by the storing unit, an instruction for executing character recognition processing on the image data stored by the storing unit, executing character recognition processing on the image data stored by the storing unit according to a reception of the instruction by the receiving unit, and performing control, in a case where the image data generated by the reading unit is to be stored by the storing unit, to read an image of a document by the reading unit with a resolution that enables character recognition.

Claims

1. An image reading apparatus comprising:

a reading unit configured to read an image of a document to generate image data;

a character recognition unit configured to execute character recognition processing;

a first receiving unit configured to receive a storage instruction for storing the image data in a storage unit;

a second receiving unit configured to receive a character recognition instruction for causing the character recognition unit to execute the character recognition processing on the image data which has been stored in the storage unit in accordance with the storage instruction; and

a determining unit configured to determine, in accordance with the storage instruction, a predetermined resolution as a reading resolution by the reading unit,

wherein at least one of the character recognition unit and the determining unit is implemented by a processor and a memory.

2. The image reading apparatus according to claim 1, wherein the predetermined resolution is a resolution by which the character recognition unit is able to recognize a character.

3. The image reading apparatus according to claim 1, wherein the predetermined resolution is 600 dpi in a main scanning direction and 300 dpi in a sub scanning direction.

4. The image reading apparatus according to claim 1, further comprising:

a selecting unit configured to select image data which has been stored in the storage unit;

a third receiving unit configured to receive a transmission instruction of the image data selected by the selecting unit; and

a transmitting unit configured to transmit the image data in accordance with the transmission instruction received by the third receiving unit,

wherein the transmitting unit is implemented by a processor and a memory.

5. An image reading apparatus comprising:

a reading unit configured to read an image of a document to generate image data;

a character recognition unit configured to execute character recognition processing;

a first receiving unit configured to receive a storage instruction for storing the image data in a storage unit;

a second receiving unit configured to receive a character recognition instruction for causing the character recognition unit to execute the character recognition processing on the image data which has been stored in the storage unit in accordance with the storage instruction; and

an inhibiting unit configured to inhibit, in accordance with the storage instruction, the reading unit from reading the image of the document based on a specific resolution,

wherein at least one of the character recognition unit and the inhibiting unit is implemented by a processor and a memory.

6. A control method in an image reading apparatus having a reading unit for reading an image of a document to generate image data, and a character recognition unit for executing character recognition processing, the control method comprising:

receiving, from a user interface, a storage instruction for storing the image data in a storage unit;

receiving, from the user interface, a character recognition instruction for causing the character recognition unit to execute the character recognition processing on the image data which has been stored in the storage unit in accordance with the storage instruction; and

determining, by a processor in accordance with the storage instruction, a predetermined resolution as a reading resolution by the reading unit.

7. A non-transitory computer-readable storage medium storing instructions that, when executed by a computer of an image reading apparatus having a reading unit for reading an image of a document to generate image data and a character recognition unit for executing character recognition processing, cause the computer to perform operations comprising:

receiving a storage instruction for storing the image data in a storage unit;

receiving a character recognition instruction for causing the character recognition unit to execute the character recognition processing on the image data which has been stored in the storage unit in accordance with the storage instruction; and

determining, in accordance with the storage instruction, a predetermined resolution as a reading resolution by the reading unit.