Image reader

• US 20060088226A1
• Filed: 10/07/2005
• Published: 04/27/2006
• Est. Priority Date: 04/10/2000
• Status: Active Grant

• Current Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Original Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: Abe, Tsutomu, Iyoda, Tetsuo
• Granted Patent: US 7,190,846 B2
• Time in Patent Office: Days
• US Class Current: 382/298
• 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.

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.

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.