Image reading apparatus and control method of image reading apparatus of automatic sheet discriminate cropping

• US 8,482,785 B2
• Filed: 03/28/2006
• Issued: 07/09/2013
• Est. Priority Date: 03/31/2005
• Status: Expired due to Fees

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Aoki, Nobushige
• Primary Examiner(s): Tieu, Benny Q
• Assistant Examiner(s): Ngo, Quyen V
• Application Number:
  US11/390,173
• Publication Number:
  US 20060221411A1
• Time in Patent Office: 2,660 Days
• Field of Search: 358/1.18, 358/474, 358/448, 382/173, 382/176, 382/112, 382/190
• US Class Current: 358/1.18
• CPC Class Codes: H04N 1/00795 Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04
• CPC Class Codes: H04N 1/00806 According to type of the original, e.g. colour paper or transparency, or reading a plurality of different types of original
• CPC Class Codes: H04N 1/00816 Determining the reading area, e.g. eliminating reading of margins

Abstract

An image reading apparatus in which when one or a plurality of original sheets are put on an original plate and are read, a desired image can be automatically cropped without previously setting a cropping method by a user is provided. A control method of such an image reading apparatus is also provided. The image on the original plate is read. The type of original sheet is discriminated on the basis of color characteristics information of the read image on the original plate. One of plural read image cropping methods is selected in accordance with the discriminated original sheet type. The read image on the original plate is cropped by the selected cropping method.

Claims

1. An image processing apparatus comprising:

an acquiring unit configured to acquire a read image obtained by reading of one or more originals which are arranged together on an original plate of a reading apparatus and are read;

a first cropping unit configured to execute a first cropping method for cropping one image area from the read image acquired by the acquiring unit;

a second cropping unit configured to execute a second cropping method for cropping individually a plurality of image areas from the read image acquired by the acquiring unit;

a specifying unit configured to specify one or more candidate regions corresponding to the one or more originals in the read image acquired by the acquiring unit;

a determining unit configured to determine a type of the one or more candidate regions corresponding to the one or more originals specified by the specifying unit, by analyzing the one or more candidate regions in the read image; and

an outputting unit configured to select a cropping method to be executed on the read image and to output one or more images cropped by the selected cropping method, wherein the outputting unit (1) selects the first cropping method responsive to a determination by the determining unit that the one or more candidate regions include a characters region and a picture region, and outputs an image including the characters region and the picture region cropped from the read image by the first cropping unit, and (2) selects the second cropping method responsive to a determination by the determining unit that all of the one or more candidate regions are picture regions, and outputs individually a plurality of images corresponding to the picture regions cropped from the read image by the second cropping unit.

2. An image processing apparatus according to claim 1, wherein the determining unit determines whether the one or more candidate regions all are or are not a picture region only, and in a case where the determining unit determines that all of the one or more candidate regions are picture regions only, the outputting unit selects the second cropping method, and outputs a plurality of images corresponding to the respective picture regions individually.

3. An image processing apparatus according to claim 1, further comprising a color correcting process selecting unit configured to select a color correction processing method of the image to be cropped, in accordance with the determination of the type of the one or more candidate regions determined by the determining unit.

4. An image processing apparatus according to claim 1, wherein the acquiring unit acquires the read image obtained by a reading of a predetermined area, of the original plate of the reading apparatus, on which one or more originals may be arranged.

5. An image processing apparatus according to claim 1, wherein the first cropping method is an auto-crop method and the second cropping method is a multi-crop method.

6. An image processing method, comprising:

acquiring a read image obtained by reading of one or more originals which are arranged together on an original plate of a reading apparatus and are read;

specifying one or more candidate regions corresponding to the one or more originals in the read image;

determining a type of the one or more candidate regions corresponding to the one or more originals specified by the specifying step, by analyzing the one or more candidate regions in the read image;

responsive to a determination that the one or more candidate regions include a characters region and a picture region, selecting a first cropping method for cropping one image area from the read image, and outputting an image including the characters region and the picture region cropped from the read image by the first cropping method; and

responsive to a determination that all of the one or more candidate regions are picture regions, selecting a second cropping method for cropping individually a plurality of image areas from the read image, and outputting individually a plurality of images corresponding to the picture regions cropped from the read image by the second cropping method.

7. An image processing method according to claim 6, wherein, in a case where the one or more candidate regions are all determined to be picture regions only, the second cropping method is selected and a plurality of images corresponding to the respective picture regions are output individually.

8. An image processing method according to claim 6, further comprising selecting a color correcting processing method of the image to be cropped, in accordance with the determined type of the of the one or more candidate regions.

9. A non-transitory computer-readable memory medium which retrievably stores a program for executing the method according to claim 6.

10. An image processing method according to claim 6, wherein the read image is obtained by a reading of a predetermined area, of the original plate of the reading apparatus, on which one or more originals may be arranged.

11. An image processing method according to claim 6, wherein the first cropping method is an auto-crop method and the second cropping method is a multi-crop method.