Method, video display system and automobile video display system

• US 20070177815A1
• Filed: 01/26/2007
• Published: 08/02/2007
• Est. Priority Date: 01/27/2006
• Status: Abandoned Application

• Current Assignee: ASUSTek Computer, Inc.
• Original Assignee: ASUSTek Computer, Inc.
• Inventors: Hung, Hsiang-Jui, Chen, Han-Hsun, Yang, Sun-Chen, Lin, Chun-San, You, Yun-Jiun
• Application Number:
  US11/698,115
• Publication Number:
  US 20070177815A1
• Time in Patent Office: Days
• US Class Current: 382/254
• CPC Class Codes: B60R 1/00 Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
• CPC Class Codes: B60R 1/26 to the rear of the vehicle
• CPC Class Codes: B60R 1/28 with an adjustable field of view
• CPC Class Codes: B60R 2300/105 using multiple cameras
• CPC Class Codes: B60R 2300/30 characterised by the type of image processing
• CPC Class Codes: B60R 2300/402 Image calibration
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/20192 Edge enhancement; Edge preservation
• CPC Class Codes: G06T 2207/30252 Vehicle exterior; Vicinity of vehicle
• CPC Class Codes: G06T 5/70 Denoising; Smoothing
• CPC Class Codes: G06T 5/73 Deblurring; Sharpening
• CPC Class Codes: G06T 7/12 Edge-based segmentation
• CPC Class Codes: G06V 20/56 exterior to a vehicle by using sensors mounted on the vehicle

Abstract

A method for displaying a video image includes: receiving the video image and performing a real-time detection upon the video image to detect at least a contour section in the video image; determining a compensation characteristic according to the contour section; adjusting pixel values of pixels corresponding to the contour section according to the compensation characteristic; and displaying the adjusted video image.

Claims

1. A method for displaying a video image, comprising:

detecting at least a contour section in the video image;

determining a compensation characteristic according to the contour section;

adjusting pixel values of pixels corresponding to the contour section according to the compensation characteristic; and

displaying the adjusted video image.

2. The method of claim 1, wherein the contour section comprises at least a first pixel and at least a second pixel, and the step of determining the compensation characteristic comprises:

if the difference between the pixel values of the first, second pixels is greater than a first threshold value, the compensation characteristic determines to perform a softening process to the contour section; and

if the difference between the pixel values of the first, second pixels is less than a second threshold value, the compensation characteristic determines to perform a sharpening process to the contour section.

3. The method of claim 2, wherein the step of adjusting pixel values of pixels corresponding to the contour section comprises:

if the compensation characteristic determines to perform the softening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, reduce the pixel value of the first pixel and increase the pixel value of the second pixel.

4. The method of claim 2, wherein the step of adjusting pixel values of pixels corresponding to the contour section comprises:

if the compensation characteristic determines to perform the sharpening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, increase the pixel value of the first pixel and reduce the pixel value of the second pixel.

12. The video display system of claim 11, wherein if the compensation characteristic determines to perform the softening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, reduce the pixel value of the first pixel and increase the pixel value of the second pixel.

13. The video display system of claim 11, wherein if the compensation characteristic determines to perform the sharpening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, increase the pixel value of the first pixel and reduce the pixel value of the second pixel.

5. A method for displaying a video image, comprising:

providing a display monitor and a plurality of recording devices;

detecting a change in the driving direction, and selecting a specific recording device from the recording devices according to a detecting result; and

displaying the video image generated by the specific recording device by utilized the display monitor.

6. The method of claim 5, wherein the step of displaying the video image generated by the specific recording device by utilized the display monitor comprises:

detecting at least a contour section in the video image;

determining a compensation characteristic according to the contour section;

adjusting pixel values of pixels corresponding to the contour section according to the compensation characteristic; and

displaying the adjusted video image.

7. The method of claim 6, wherein the contour section comprises at least a first pixel and at least a second pixel, and the step of determining the compensation characteristic comprises:

if the difference between the pixel values of the first, second pixels is greater than a first threshold value, the compensation characteristic determines to perform the softening process to the contour section; and

if the difference between the pixel values of the first, second pixels is less than a second threshold value, the compensation characteristic determines to perform the sharpening process to the contour section.

8. The method of claim 7, wherein the step of adjusting pixel values of pixels corresponding to the contour section comprises:

if the compensation characteristic is determined to perform the softening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, reduce the pixel value of the first pixel and increase the pixel value of the second pixel.

9. The method of claim 7, wherein the step of adjusting pixel values of pixels corresponding to the contour section comprises:

if the compensation characteristic is determined to perform the sharpening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, increase the pixel value of the first pixel and reduce the pixel value of the second pixel.

10. A video display system, comprising:

a detecting module for detecting a video image, and detecting at least a contour section in the video image;

a determining unit, coupled to the detecting unit, for determining a compensation characteristic according to the contour section;

a compensating unit, coupled to the determining unit, for adjusting pixel values of pixels corresponding to the contour section according to the compensation characteristic; and

a display monitor, coupled to the compensation unit, for displaying the adjusted video image.

11. The video display system of claim 10, wherein the contour section comprises at least a first pixel and at least a second pixel, if the difference between the pixel values of the first, second pixels is greater than a first threshold value, the compensation characteristic determines to perform the softening process to the contour section;

and

if the difference between the pixel values of the first, second pixels is less than a second threshold value, the compensation characteristic determines to perform the sharpening process to the contour section.

14. The video display system of claim 10, wherein the video display system comprises:

a plurality of recording device;

a driving direction detecting module for detecting a change of the driving direction and generating a detecting result; and

a selecting unit, coupled to the recording devices and the driving direction detecting module, for selecting a specific recording device from the recording devices to generate the video image according to the detecting result.

15. A automobile real-time video display system, comprising:

a plurality of recording device;

a driving direction detecting module for detecting a change in the driving direction and generating a detecting result;

a select unit, coupled to the recording devices and the driving direction detecting module, for selecting a specific recording device from the recording devices to generate the video image according to the detecting result; and

a display monitor for displaying the video image generated from the specific recording device.

16. The automobile real-time video display system of claim 15, further comprising:

a detecting module, coupled to the selecting unit, for receiving a video image, and detecting at least a contour section in the video image;

a determining unit, coupled to the detecting unit, for determining a compensation characteristic according to the contour section; and

a compensating unit, coupled to the determining unit, for adjusting pixel values of pixels corresponding to the contour section according to the compensation characteristic;

wherein the display monitor, coupled to the compensation unit, for displaying the adjusted video image.

17. The automobile real-time video display system of claim 15, wherein the contour section comprises at least a first pixel and at least a second pixel, if the difference between the pixel values of the first, second pixels is greater than a first threshold value, the compensation characteristic determines to perform the softening process to the contour section;

and

if the difference between the pixel values of the first, second pixels is less than a second threshold value, the compensation characteristic determines to perform the sharpening process to the contour section.

18. The automobile real-time video display system of claim 15, wherein if the compensation characteristic determines to perform the softening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, reduce the pixel value of the first pixel and increase the pixel value of the second pixel.

19. The automobile real-time video display system of claim 15, wherein if the compensation characteristic determines to perform the sharpening process to the contour section and the pixel value of the first pixel is greater than the pixel value of the second pixel, increase the pixel value of the first pixel and reduce the pixel value of the second pixel.