Method and apparatus for performing warp processing on an input image

• US 8,467,627 B2
• Filed: 11/01/2010
• Issued: 06/18/2013
• Est. Priority Date: 11/17/2009
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Gwak, Jin-pyo, Kim, Heo-won
• Primary Examiner(s): Johns, Andrew W
• Assistant Examiner(s): Harandi, Siamak
• Application Number:
  US12/916,706
• Publication Number:
  US 20110116720A1
• Time in Patent Office: 960 Days
• Field of Search: None
• US Class Current: 382/275
• CPC Class Codes: G06T 3/00 Geometric image transformations in the plane of the image
• CPC Class Codes: G06T 3/18 Image warping, e.g. rearranging pixels individually
• CPC Class Codes: G06V 40/171 Local features and components; Facial parts eye characteristics G06V40/18; Occluding parts, e.g. glasses; Geometrical relationships

Abstract

A method and apparatus for image processing includes detecting a face area in an input image, detecting an eye in the detected face area, determining a center point based on the detected eye, and performing warp processing on the input image based on the center point. Accordingly, it is not necessary to manually set areas for the warp processing.

Claims

1. An image processing method comprising:

detecting a face area in an input image;

detecting an eye in the detected face area;

determining a center point based on the detected eye; and

performing non-linear warp processing on the input image based on the center point.

2. The image processing method of claim 1, wherein the warp processing is image warping using a fisheye lens filter.

3. The image processing method of claim 1, wherein the determining the center point determines the center point for the warp processing based on position information of the detected eye.

4. The image processing method of claim 3, wherein when two eyes are detected, coordinates corresponding to a middle position between centers of the two eyes is determined as a center point.

6. The image processing method of claim 1, further including selecting one face area from at least two detected face areas when at least two faces areas are detected in the input image.

7. The image processing method of claim 6, wherein one face area is selected by a user from the at least two detected face areas.

8. The image processing method of claim 6, wherein the detecting the eye in the detected face area detects an eye in the selected face area.

9. The image processing method of claim 1, wherein the input image includes a live view image or a reproduced image.

5. An image processing method comprising:

detecting a face area in an input image;

detecting an eye in the detected face area;

determining a center point for warp processing based on position information of the detected eye; and

performing warp processing on the input image based on the center point,

wherein when one eye is detected, the determining the center point for warp processing determines where the detected eye is positioned in the detected face area, and determines coordinates corresponding to a position at a predetermined distance from the eye position in the face area in a direction toward a center of the face area as a center point.

10. A non-transitory computer-readable storage medium having stored thereon a program executable by a processor for performing an image processing method, the image processing method comprising:

detecting a face area in an input image;

detecting an eye in the detected face area;

determining a center point based on the detected eye; and

performing non-linear warp processing on the input image based on the center point.

11. An image processing apparatus comprising:

a face area detection unit that detects a face area in an input image;

an eye detection unit that detects an eye in the detected face area;

a center point determining unit that determines a center point based on the detected eye; and

a warp processing unit that performs a non-linear warp processing on the input image based on the center point.

12. The image processing apparatus of claim 11, wherein the warp processing unit performs the warp processing on the input image by performing image warping using a fisheye lens filter.

13. The image processing apparatus of claim 11, wherein the center point determining unit determines a center point for the warp processing based on position information of the detected eye.

14. The image processing apparatus of claim 13, wherein when the eye detection unit detects two eyes, the center point determining unit determines coordinates corresponding to a middle position between centers of the two eyes as a center point.

16. The image processing apparatus of claim 11, further comprising a face area selection unit that selects one face area from at least two detected face areas when the face area detection unit detects at least two face areas in the input image.

17. The image processing apparatus of claim 16, wherein the face area selection unit selects one face area from the detected at least two face areas according to a selection input through a user input unit.

18. The image processing apparatus of claim 16, wherein the eye detection unit detects an eye in the selected face area selected by the face area selection unit.

19. The image processing apparatus of claim 11, wherein the input image includes a live view image or a reproduced image.

15. An image processing apparatus comprising:

a face area detection unit that detects a face area in an input image;

an eye detection unit that detects an eye in the detected face area

a center point determining unit that determines a center point for warp processing based on position information of the detected eve; and

a warp processing unit that performs a warp processing on the input image based on the center point,

wherein when the eye detection unit detects one eye, the center point determining unit determines where the detected eye is positioned in the detected face area and determines coordinates corresponding to a position at a predetermined distance from the eye position in the face area toward a center of the face area as a center point.