Method, video display system and automobile video display system

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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of a video processing unit according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating the video processing unit shown in FIG. 1 performing a soften process.

FIG. 3 is a schematic diagram illustrating the video processing unit shown in FIG. 1 performing a sharpen process.

FIG. 4 shows a flowchart illustrating an embodiment of the operation of displaying a video image.

FIG. 5 is a block diagram of the automobile real-time video display system according to an embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating setup locations of recording devices of the automobile real-time video display system shown in FIG. 5.

FIG. 7 shows a flowchart illustrating another embodiment of the operation of displaying a 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; anddisplaying 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; andif 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.

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; anddisplaying 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; anddisplaying 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; andif 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; anda 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.

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.

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; anda 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; anda 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; anda 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.