Image compensating system and method for a mobile terminal imaging device

• US 20060008172A1
• Filed: 07/05/2005
• Published: 01/12/2006
• Est. Priority Date: 07/06/2004
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In-Sup
• Application Number:
  US11/176,934
• Publication Number:
  US 20060008172A1
• Time in Patent Office: Days
• US Class Current: 382/254
• CPC Class Codes: H04N 1/3878 Skew detection or correction

Abstract

An image correction system for a mobile communication terminal having a camera is provided. In one embodiment, the image correction system comprises a processing unit for detecting and correcting an undesirable image orientation for an image captured by the camera, wherein the undesirable orientation is calculated according to a first reference line formed by a pixel of quasi-color information in the captured image.

Claims

1. An image correction system for a mobile communication terminal having a camera, the image correction system comprising:

a processing unit for detecting and correcting an undesirable image orientation for an image captured by the camera, wherein the undesirable orientation is calculated according to a first reference line formed by a pixel of quasi-color information in the captured image.

2. The system of claim 1, further comprising a memory unit for storing the captured image.

3. The system of claim 1, wherein the processing unit detects the undesirable image orientation by comparing the first reference line with a second reference line in the capture image outputted in line unit format.

4. The system of claim 1, wherein the undesirable image orientation is caused by a tilting of the camera by a first angel A in a first direction, when the image was captured and, wherein the undesirable image orientation is corrected by rotating the captured image by a second angel B, in a second direction.

5. The system of claim 4, wherein the second angel B is equal to the first angel A.

6. The system of claim 5, wherein the second direction is opposite the first direction.

7. The system of claim 2, wherein the memory unit comprises at least one of:

RAM for temporarily storing the captured image; and

flash memory for storing a corrected image of the captured image.

8. The system of claim 1, further comprising a digital signal processor for enhancing the speed of the processing unit by preprocessing data related to the captured image.

9. The system of claim 1, further comprising:

a wireless communication unit for wirelessly communicating a signal comprising a corrected image of the captured image.

10. The system of claim 1, further comprising:

a display unit for displaying a corrected image of the captured image.

11. The system of claim 1, wherein the captured image is stored in memory in at least one of YCbCr, YUV, and RGB formats.

12. The system of claim 11, wherein the processing unit detects the first reference line based on a Y value representing a luminance component, when the captured image is stored in YcbCr or YUV formats.

13. The system of claim δ

1, wherein the processing unit detects the first reference line based on a distribution of a G value, when the captured image is stored in an RGB format.

14. The system of claim 11, wherein the processing unit detects a Y value represented by M bits in the captured image, and if N bits of the M bits are equal, the Y value is set as the first reference line.

15. The system of claim 11, wherein the processing unit detects a G value represented by M bits in the captured image, and if N bits of the M bits are equal, the G value is set as the first reference line.

16. An image correction method for a mobile communication terminal having a camera, the method comprising:

photographing an object using the camera;

generating image data for the photographed object;

detecting an undesirable image orientation according to a first reference line formed by a pixel of quasi-color information in the image data; and

correcting the undesirable image orientation.

17. The method of claim 16, wherein the detecting comprises:

determining a distribution of the image data by analyzing image data near center of the image.

18. The method of claim 17, wherein the detecting further comprises:

detecting a distribution of a Y value representing a luminance component of the image, when the image data is in YCbCr or YUV formats.

19. The method of claim 17, wherein the detecting further comprises determining a distribution of a G value when the data is in RGB format.

20. The method of claim 17, wherein the detecting further comprises:

detecting the Y value represented by M bits in the captured image; and

setting the Y value as the first reference line, if N bits of the M bits are equal.