Image processing method for display device

Abstract

The present invention provides an image processing method for a display device. The method includes: calculating an average brightness of an image; adjusting the average brightness to generate an adjusted average brightness; utilizing Brightness Preserving Bi-Histogram Equalization (BBHE) and the adjusted average brightness to process the image; and displaying the image.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a table illustrating the relationship between gamma values and brightness adjustment parameters for an image under various ambient light and backlight conditions.

FIG. 2 is a table showing setting values corresponding to different conditions of ambient light and backlight settings.

FIG. 3 is a flowchart illustrating the image processing method in a display device according to an embodiment of the present invention.

Claims

1. An image processing method for a display device comprising: calculating an average brightness of an image;adjusting the average brightness to generate an adjusted average brightness; andutilizing the adjusted average brightness substituted into Brightness Preserving Bi-Histogram Equalization (BBHE) to process the image.

2. The image processing method of claim 1, further comprising: adjusting the average brightness to generate an adjusted average brightness according to an average brightness of the unprocessed image and a brightness adjustment parameter B.

3. The image processing method of claim 1, further comprising: adjusting a gamma value corresponding to the image.

4. The image processing method of claim 1, further comprising: adjusting a brightness of a backlight of the display device.

5. The image processing method of claim 4, further comprising: adjusting a gamma value corresponding to the image.

6. The image processing method of claim 5, further comprising: selecting a specific setting value from a plurality of setting values according to the brightness of the backlight of the display device and a brightness of an ambient light of the display device, wherein the specific setting value comprises a gamma setting value and an average brightness adjustment parameter;wherein the step of adjusting the gamma value corresponding to the image according to the gamma setting value to set the gamma value and the step of adjusting the average brightness to generate the adjusted average brightness adjusts the average brightness according to the average brightness.

7. The image processing method of claim 1, wherein the display device is a flat panel display device or a liquid crystal display (LCD) device.