Image reader

• US 7,190,846 B2
• Filed: 10/07/2005
• Issued: 03/13/2007
• Est. Priority Date: 04/10/2000
• Status: Expired due to Fees

• Current Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Original Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: Abe, Tsutomu, Iyoda, Tetsuo
• Primary Examiner(s): Bella; Matthew C.
• Assistant Examiner(s): Kassa; Yosef
• Application Number:
  US11/245,028
• Publication Number:
  US 20060088226A1
• Time in Patent Office: 522 Days
• Field of Search: 382/282, 382/284, 382/294, 382/299, 358/540, 358/450, 358/453, 358/1.2
• US Class Current: 382/284
• CPC Class Codes: G06V 10/147 Details of sensors, e.g. sensor lenses fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19
• CPC Class Codes: G06V 10/32 Normalisation of the pattern dimensions

Abstract

A CCD camera 10 picks up multiple adjacent targeted portions on a document 2, and to obtain distance information, a distance measurement unit 11 calculates the distances to the targeted portions of the document 2. Based on the distance information, a synthesization controller 16 prepares perspective information for the images, adjusts the sizes of the multiple obtained plane images so they correspond, and synthesizes the resultant plane images to form a single image.

Claims

1. An image reader comprising:

an image pickup unit for imaging an object at a predetermined resolution to obtain a first image, the image pickup unit for imaging a specific portion of the object at a higher resolution than the predetermined resolution to obtain a second image; and

a processing unit for reducing the size of the second image to obtain a reduced second image and superimposing the reduced second image on the first image.

5. The image reader according to claim 1, wherein the specific portion of the object is determined based on the first image.

2. An image reader comprising:

an image pickup unit for imaging a plurality of multiple adjacent target portions at different resolutions from each other to obtain a plurality of multiple images each having the different resolutions; and

a processing unit for resizing the plurality of images in accordance with the different resolutions to obtain a plurality of resized images, the processing unit for synthesizing the plurality of resized images to obtain a single image.

3. A method of reading an image, the method comprising:

imaging an object at a predetermined resolution to obtain a first image;

imaging a specific portion of the object at a higher resolution than the predetermined resolution to obtain a second image;

reducing the size of the second image to obtain a reduced second image; and

superimposing the reduced second image on the first image.

6. The method according to claim 3, further comprising determining the specific portion of the object based on the first image.

4. A method of reading an image, the method comprising:

imaging a plurality of multiple adjacent target portions at different resolutions from each other to obtain a plurality of multiple images each having the different resolutions;

resizing the plurality of images in accordance with the different resolutions to obtain a plurality of resized images; and

synthesizing the plurality of resized images to obtain a single image.