Method of detecting and correcting the red eye

• US 7,289,664 B2
• Filed: 01/16/2003
• Issued: 10/30/2007
• Est. Priority Date: 01/17/2002
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Enomoto, Jun
• Primary Examiner(s): Bella; Matthew C.
• Assistant Examiner(s): Lu; Tom Y
• Application Number:
  US10/345,407
• Publication Number:
  US 20030142285A1
• Time in Patent Office: 1,748 Days
• Field of Search: 382/167, 382/162, 382/163, 382/358, 382/518, 382/520
• US Class Current: 382/167
• CPC Class Codes: G06T 2207/30216 Redeye defect
• CPC Class Codes: G06T 7/90 Determination of colour characteristics
• CPC Class Codes: G06V 40/193 Preprocessing; Feature extraction
• CPC Class Codes: H04N 1/62 Retouching, i.e. modification of isolated colours only or in isolated picture areas only
• CPC Class Codes: H04N 1/624 Red-eye correction control of camera based on recognised facial parts H04N23/611

Abstract

The red eye detecting and correcting method detects red eye that occurred in an image during photographing and correcting the thus detected red eye to a specified color of pupil. Parameters employed in red eye detection and correction are altered in accordance with at least one of conditions as follows: type of the image, a camera model with which the image was recorded, a processing space for image data on the image, image processing steps to which the image is to be subjected before red eye detection and correction, format of the image, and scan condition.

Claims

1. A red eye detecting and correcting method, comprising:

detecting red eye that occurred in an image during photographing; and

correcting the thus detected red eye to a specified color of pupil,

wherein parameters employed in red eye detection and correction are altered in accordance with at least one of conditions as follows;

type of said image, a camera model with which said image was recorded, a processing space for image data on said image, image processing steps to which said image is to be subjected before red eye detection and correction, format of said image, and scan condition; and

wherein when a part of said conditions or a part of combinations of said conditions are adopted more frequently than another part of said conditions or another part of the combinations of said conditions,

parameters corresponding to all said part of said conditions and all said part of the combinations of said conditions are provided as said parameters, and

parameters corresponding to one among said part of said conditions or one among said part of the combinations of said conditions are selected as said parameters to be altered; and

when another part of said conditions or a part of combinations of said conditions are adopted less frequently than another part of said conditions or another part of the combinations of said conditions,

reference parameters for said another part of said conditions or said another part of the combinations of said conditions are provided as said parameters, and

said parameters to be altered are obtained from said reference parameters by transformation based on one among said another part of said conditions or one among said another part of the combinations of said conditions.

2. The red eye detecting and correcting method according to claim 1, wherein said parameters are altered in accordance with a combination of two or more of said conditions.

3. The red eye detecting and correcting method according to claim 1, wherein:

reference parameters are provided as said parameters;

and

said parameters to be altered are obtained from said reference parameters by transformation based on one of said conditions or a combination of two or more of said conditions.

4. The red eye detecting and correcting method according to claim 1, wherein:

parameters corresponding to all said conditions and all combinations of said conditions are previously provided as said parameters; and

parameters corresponding to one of said conditions or a combination of two or more of said conditions are selected as said parameters to be altered.

5. The red eye detecting and correcting method according to claim 1, wherein the processing space comprises alteration of red-eye factors based on color space, wherein

the image processing steps comprise alteration of red-eye factors based on gradation.

6. The red eye detecting and correcting method according to claim 5, wherein the parameters employed in red-eye detection are altered in accordance at least one of:

camera model, color space, gradation, and scan condition.

7. The red eye detecting and correcting method according to claim 6, wherein said parameters are altered in accordance with a combination of two or more of said conditions.

8. The red eye detecting and correcting method according to claim 1, wherein said type of said image comprises a negative film.

9. The red eye detecting and correcting method according to claim 1, wherein said type of said image comprises a positive film.

10. The red eye detecting and correcting method according to claim 1, wherein said type of said image comprises a digital image.

11. The red eye detecting and correcting method according to claim 1, wherein said format of said image comprises the number of bits.

12. The red eye detecting and correcting method according to claim 1, wherein said scan condition comprises the number of times pixels are offset and coordination.