US 8,077,968 B2Granted

Image processing method

AssigneeWintek Corporation

InventorsJyun-Sian Li, Chih-Chang Lai, Ching-Fu Hsu, Ruey-Shing Weng

Life of this patent

Estimating the term…

Loading patent…

Abstract

An image processing method for individually processing an image of each pixel unit is provided. A red-green-blue color space signal to be input to a pixel unit is transformed into a first brightness signal. The red-green-blue color space signal includes a first red signal, a first green signal and a first blue signal. The first brightness signal is transformed into a second brightness signal to obtain a contrast factor, wherein the contrast factor is a ratio of the second brightness signal and the first brightness signal. The first red signal, the first green signal and the first blue signal are multiplied by the contrast factor to obtain a second red signal, a second green signal and a second blue signal. The second red signal, the second green signal and the second blue signal are performed by color enhancement to obtain a high contrast and colorful image.

Claims18

Dependent claims

An image processing method, for individually processing an image of each pixel unit, comprising:

transforming a red-green-blue color space signal for a pixel unit into a first brightness value, wherein the red-green-blue color space signal comprises a first red value, a first green value and a first blue value;
transforming the first brightness value into a second brightness value to obtain a contrast factor, wherein the contrast factor is a ratio of the second brightness value and the first brightness value;
respectively multiplying the first red value, the first green value and the first blue value by the contrast factor to obtain a second red value, a second green value and a second blue value;
transforming a maximum difference among the first red value, the first green value and the first blue value into a color enhancement factor;
obtaining a first formula, a second formula and a third formula based on the color enhancement factor;
and
respectively inputting the second red value, the second green value and the second blue value to the first formula, the second formula and the third formula to obtain an output red value, an output green value and an output blue value.

4 more elements

An image processing method, for individually processing an image of each pixel unit, comprising:

transforming a maximum difference among a first red value, a first green value and a first blue value for each pixel unit into a color enhancement factor;
obtaining a first formula, a second formula and a third formula based on the color enhancement factor;
respectively inputting the first red value, the first green value and the first blue value to the first formula, the second formula and the third formula to obtain a second red value, a second green value and a second blue value;
transforming the second red value, the second green value and the second blue value into a first brightness value;
transforming the first brightness value into a second brightness value to obtain a contrast factor, wherein the contrast factor is a ratio of the second brightness value and the first brightness value;
and
multiplying the second red value, the second green value and the second blue value by the contrast factor to obtain an output red value, an output green value and an output blue value.

4 more elements

Dependencies are inferred from the claim text.