Image processing system and image processing method

• US 8,023,158 B2
• Filed: 06/10/2008
• Issued: 09/20/2011
• Est. Priority Date: 09/26/2003
• Status: Expired due to Fees

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Narusawa, Hideyuki, Maki, Yoichiro
• Primary Examiner(s): Lee; Thomas D
• Assistant Examiner(s): Brinich; Stephen M
• Application Number:
  US12/136,122
• Publication Number:
  US 20080247001A1
• Time in Patent Office: 1,197 Days
• Field of Search: 358/1.9, 358/2.1, 358/448, 358/461, 358/3.26, 382173-174, 382273-275
• US Class Current: 358/3.26
• CPC Class Codes: H04N 1/00795 Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04
• CPC Class Codes: H04N 1/00801 according to characteristics of the original
• CPC Class Codes: H04N 1/00816 Determining the reading area, e.g. eliminating reading of margins
• CPC Class Codes: H04N 1/00827 Arrangements for reading an image from an unusual original, e.g. 3-dimensional objects
• CPC Class Codes: H04N 1/38 Circuits or arrangements for blanking or otherwise eliminating unwanted parts of pictures H04N1/387 takes precedence
• CPC Class Codes: H04N 1/40 Picture signal circuits H04N1/387 takes precedence
• CPC Class Codes: H04N 2201/0091 Digital copier; digital 'photocopier' H04N2201/0093 and H04N2201/0094 take precedence

Abstract

An image processing system comprising: an image acquisition unit for acquiring a scanned image; a non-voltage storage medium that stores correction information corresponding to a known object having a three-dimensional shape defined by the standard; when an object of the scanned image is the known object, a correction unit that corrects a shadow area of the scanned image corresponding to a shadow resulting from thickness of the known object, on the basis of the correction information.

Claims

1. An image processing system, comprising:

an image acquisition unit for acquiring a scanned image;

a non-volatile storage medium that stores correction information prior to the acquiring of the scanned image, said correction information corresponding to a known object having a planar shape specified by a standard; and

when an object of the scanned image is the known object, a correction unit that corrects distortion of an aspect ratio of the scanned image on the basis of the correction information and that resizes the scanned image with different factors in longitudinal and cross directions.

2. An image processing system according to claim 1, wherein the known object is a disk type storage medium,

the correction unit corrects distortion of the scanned image by deforming the scanned image so that a rectangle circumscribing an area to be divided by area division will have an aspect ratio to be determined by the correction information.

3. The image processing system according to claim 1, wherein the correction unit corrects distortion of the scanned image by resizing the scanned image to a standard size specified by the correction information.

4. The image processing system according to claim 1, wherein the correction unit corrects distortion of the entire scanned image.

5. The image processing system according to claim 1, wherein

the image acquisition unit reads an entire readable area at a low resolution, and reads a portion of the entire readable area at a higher resolution than the low resolution to obtain the scanned image;

and

the correction unit determines whether an object of the scanned image is the known object and causes the scanning unit to read the portion of the entire readable area at the higher resolution when the object is the known object.

6. An image processing method, comprising:

acquiring a scanned image;

acquiring correction information from a non-volatile storage medium that stores the correction information prior to the acquiring of the scanned image, said correction information corresponding to a known object having a planar shape specified by a standard; and

when an object of the scanned image is the known object, correcting distortion of an aspect ratio of the scanned image on the basis of the correction information and resizing the scanned image with different factors in longitudinal and cross directions.

7. The image processing method according to claim 6, wherein the correcting distortion of the scanned image comprises resizing the scanned image to a standard size specified by the correction information.

8. The image processing method according to claim 6, wherein the correcting distortion of the aspect ratio of the scanned image comprises correcting distortion of the entire scanned image.

9. The image processing method according to claim 6, wherein the acquiring the scanned image includes reading an entire readable area at a low resolution and reading a portion of the entire readable area at a higher resolution than the low resolution;

wherein the portion of the entire readable area is read at the higher resolution when the object is the known object.